i

About the Tutorial

This tutorial provides a basic understanding of Apache POI library and its
features. Here we will learn how to read, write, and manage MS-PowerPoint
documents using Java programs.

Audience
This tutorial is designed for all the readers working on Java and especially
those who want to create, read, write, and modify PPT files using Java.

Prerequisites
A general awareness of Java programing with JDK1.5 or later versions and IO
concepts in Java are the only prerequisites to understand this tutorial.

Copyright & Disclaimer

© Copyright 2014 by Tutorials Point (I) Pvt. Ltd.

All the content and graphics published in this e-book are the property of Tutorials Point
(I) Pvt. Ltd. The user of this e-book is prohibited to reuse, retain, copy, distribute or
republish any contents or a part of contents of this e-book in any manner without written
consent of the publisher.

The API of Apache POI contains a number of methods and classes. In this tutorial, we
have used only some of those for demonstration purpose. We encourage the readers to
refer the complete API document for a comprehensive understanding.

We strive to update the contents of our website and tutorials as timely and as precisely
as possible, however, the contents may contain inaccuracies or errors. Tutorials Point (I)
Pvt. Ltd. provides no guarantee regarding the accuracy, timeliness or completeness of
our website or its contents including this tutorial. If you discover any errors on our
website or in this tutorial, please notify us at contact@tutorialspoint.com

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Table of Contents
About the Tutorial .............................................................................................................................i

Audience ...........................................................................................................................................i

Prerequisites .....................................................................................................................................i

Copyright & Disclaimer ......................................................................................................................i

Table of Contents .............................................................................................................................ii

1. APACHE POI – OVERVIEW .................................................................................................... 1

What is Apache POI? ........................................................................................................................1

Components of Apache POI ..............................................................................................................1

2. FLAVORS OF JAVA PPT API ................................................................................................... 3

Aspose Slides for Java .......................................................................................................................3

Apache POI .......................................................................................................................................3

3. APACHE POI – INSTALLATION .............................................................................................. 5

System Requirements ......................................................................................................................5

Step 1: Verify your Java Installation .................................................................................................5

Step 2: Set your Java Environment ...................................................................................................6

Step 3: Install Apache POI Library .....................................................................................................6

4. CLASSES AND METHODS...................................................................................................... 9

Presentation .....................................................................................................................................9

Slide ...............................................................................................................................................10

Slide Master ...................................................................................................................................11

Slide Layout ....................................................................................................................................11

Text Paragraph ...............................................................................................................................12

Text Run .........................................................................................................................................13

Text shape ......................................................................................................................................14

HyperLink .......................................................................................................................................15

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5. PRESENTATION .................................................................................................................. 16

Creating Empty Presentation ..........................................................................................................16

Editing an Existing Presentation .....................................................................................................18

6. SLIDE LAYOUTS .................................................................................................................. 22

Available Slide layouts....................................................................................................................22

Title Layout ....................................................................................................................................25

Title and content Layout.................................................................................................................29

7. MANAGEMENT OF SLIDES ................................................................................................. 34

Changing a Slide .............................................................................................................................34

Reordering Slides ...........................................................................................................................37

Deleting Slides ................................................................................................................................41

8. IMAGES ............................................................................................................................. 46

Adding Image .................................................................................................................................46

Reading Image ................................................................................................................................49

9. CREATING HYPERLINKS ...................................................................................................... 52

Creating Hyperlinks ........................................................................................................................52

10. READING SHAPES .............................................................................................................. 57

Reading Shapes from a Presentation ..............................................................................................57

11. FORMATTING TEXT ............................................................................................................ 60

Formatting Text in a Presentation ..................................................................................................60

12. MERGING .......................................................................................................................... 67

Merging Multiple Presentations .....................................................................................................67

13. PPT TO IMAGE ................................................................................................................... 71

Converting Presentation to Image ..................................................................................................71

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Apache POI – PPT

1. APACHE POI – OVERVIEW

Many a time, a software application is required to generate reports in Microsoft

Office file format. Sometimes, an application is even expected to receive MS-
Office files as input data.

Any Java programmer who wants to produce MS Office files as output must use
a predefined and read-only API to do so.

What is Apache POI?

Apache POI is a popular API that allows programmers to create, modify, and
display MS-Office files using Java programs. It is an open source library
developed and distributed by Apache Software Foundation. It contains classes
and methods to decode the user input data, or a file into MS Office documents.

Components of Apache POI

Apache POI contains classes and methods to work on all OLE2 Compound
documents of MS-Office. The list of components of this API is given below:

 POIFS (Poor Obfuscation Implementation File System): This component

is the basic factor of all other POI elements. It is used to read different
files explicitly.

 HSSF (Horrible SpreadSheet Format): It is used to read and write .xls

format of MS-Excel files.

 XSSF (XML SpreadSheet Format): It is used for .xlsx file format of MS-
Excel.

 HPSF (Horrible Property Set Format): It is used to extract property sets

of the MS-Office files.

 HWPF (Horrible Word Processor Format): It is used to read and write

.doc extension files of MS-Word.

 XWPF (XML Word Processor Format): It is used to read and write .docx
extension files of MS-Word.

 HSLF (Horrible Slide Layout Format): It is used to read, create, and edit
PowerPoint presentations.

 HDGF (Horrible DiaGram Format): It contains classes and methods for

MS-Visio binary files.

 HPBF (Horrible PuBlisher Format): It is used to read and write MS-

Publisher files.
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Apache POI – PPT

This tutorial guides you through the process of working on Microsoft PowerPoint
presentation using Java. Therefore the discussion is confined to XSLF
component.

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Apache POI – PPT

2. FLAVORS OF JAVA PPT API

This chapter takes you through some of the flavors of Java PowerPoint API and
their features. There are many vendors who provide Java PPT related APIs;
some of them are considered in this chapter.

Aspose Slides for Java

Aspose slides for Java is a purely licensed Java PPT API, developed and
distributed by the vendor Aspose. The latest version of this API is 8.1.2,
released in July 2014. It is a rich and heavy API (combination of plain Java
classes and AWT classes) for designing the PPT component that can read, write,
and manage slides.

The common uses of this API are as follows:

● Build dynamic presentations

● Render and print high-fidelity presentations
● Generate, edit, convert, and print presentations

Apache POI
Apache POI is a 100% open source library provided by Apache Software
Foundation. Most of the small and medium scale application developers depend
heavily on Apache POI (HSLF + XSLF). It supports all the basic features of PPT
libraries; however, rendering and text extraction are its main features. Given
below is the architecture of Apache POI for PPT.

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Apache POI – PPT

Architecture – Apache POI for PPT

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Apache POI – PPT

3. APACHE POI – INSTALLATION

This chapter takes you through the process of setting up Apache POI on
Windows and Linux based systems. Apache POI can easily be installed and
integrated with your current Java environment, following a few simple steps
without any complex setup procedures. User administration is required for
installation.

System Requirements
JDK Java SE 2 JDK 1.5 or above

Memory 1 GB RAM (recommended)

Disk Space No minimum requirement

Operating System Version Windows XP or above, Linux

Let us now proceed with the steps to install Apache POI.

Step 1: Verify your Java Installation

First of all, you need to have Java Software Development Kit (SDK) installed on
your system. To verify this, execute any of the following two commands
depending on the platform you are working on.

If the Java installation has been done properly, then it will display the current
version and specification of your Java installation. A sample output is given in
the following table.

Platform Command Sample Output

Java version "1.7.0_60"

Open command console
and type: Java (TM) SE Run Time
Windows Environment (build 1.7.0_60-b19)

Java Hotspot (TM) 64-bit Server

\>java –version
VM (build 24.60-b09,mixed mode)

Linux Open command java version "1.7.0_25"

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Apache POI – PPT

terminal and type: Open JDK Runtime Environment

(rhel-2.3.10.4.el6_4-x86_64)

Open JDK 64-Bit Server VM (build

$java –version
23.7-b01, mixed mode)

● We assume that the readers of this tutorial have Java SDK version 1.7.0_60
installed on their system.

● In case you do not have Java SDK, download its current version from
http://www.oracle.com/technetwork/java/javase/downloads/index.html and
install it.

Step 2: Set your Java Environment

Set the environment variable JAVA_HOME to point to the base directory location
where Java is installed on your machine. For example,

Platform Description

Windows Set JAVA_HOME to C:\ProgramFiles\java\jdk1.7.0_60

Linux Export JAVA_HOME=/usr/local/java-current

Append the full path of Java compiler location to the System Path.

Platform Description

Append the String "C:\Program Files\Java\jdk1.7.0_60\bin" to

Windows
the end of the system variable PATH.

Linux Export PATH=$PATH:$JAVA_HOME/bin/

Execute the command java -version from the command prompt as explained
above.

Step 3: Install Apache POI Library

Download the latest version of Apache POI from
http://poi.apache.org/download.html and unzip its contents to a folder from

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Apache POI – PPT

where the required libraries can be linked to your Java program. Let us assume
the files are collected in a folder on C drive.

The following images show the directories and the file structures inside the
downloaded folder:

Add the complete path of the five jars as highlighted in the above image to the
CLASSPATH.

Platform Description

Append the following strings to the end of the user variable

CLASSPATH:

“C:\poi-3.9\poi-3.9-20121203.jar;”

Windows “C:\poi-3.9\poi-ooxml-3.9-20121203.jar;”

“C:\poi-3.9\poi-ooxml-schemas-3.9-20121203.jar;”

“C:\poi-3.9\ooxml-lib\dom4j-1.6.1.jar;”

“C:\poi-3.9\ooxml-lib\xmlbeans-2.3.0.jar;.;”

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Apache POI – PPT

Export CLASSPATH=$CLASSPATH:

/usr/share/poi-3.9/poi-3.9-20121203.tar:

/usr/share/poi-3.9/poi-ooxml-schemas-3.9-20121203.tar:
Linux
/usr/share/poi-3.9/poi-ooxml-3.9-20121203.tar:

/usr/share/poi-3.9/ooxml-lib/dom4j-1.6.1.tar:

/usr/share/poi-3.9/ooxml-lib/xmlbeans-2.3.0.tar

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Apache POI – PPT

4. CLASSES AND METHODS

In this chapter, we will learn about a few classes and methods under Apache POI
API that are crucial to work on PPT files using Java programs.

Presentation
To create and manage a presentation, you have a class called XMLSlideShow in
the package org.apache.poi.xslf.usermodel. Given below are some important
methods and a constructor of this class.

Class: XMLSlideShow

Package: org.apache.poi.xslf.usermodel

S. No. Constructor and Description

1 XMLSlideShow(java.io.InputStream inputStream)

You can instantiate this class by passing an inputstream class object

to it.

S. No. Methods and Description

1 int addPicture (byte[] pictureData, int format)

Using this method, you can add a picture to a presentation.

2 XSLFSlide createSlide()

Creates a blank slide in a presentation.

3 XSLFSlide createSlide(XSLFSlideLayout layout)

Creates a slide with a given slide layout.

4 java.util.List<XSLFPictureData> getAllPictures()

Returns an array of all the pictures in a presentation.

5 java.awt.Dimension getPageSize()

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Apache POI – PPT

Using this method, you can get to know the current page size.

6 XSLFSlideMaster[] getSlideMasters()

Returns the array of all the slides in a presentation.

7 XSLFSlide[] getSlides()

Returns all the slides in a presentation.

8 XSLFSlide removeSlide(int index)

Using this method, you can remove a slide from a presentation.

9 void setPageSize(java.awt.Dimension pgSize)

Using this method, you can reset the page size.

10 void setSlideOrder(XSLFSlide slide, int newIndex)

Using this method, you can reorder the slides.

Slide
To create and manage a slide in a presentation, the methods of the XSLFSlide
class are used. Some important methods of this class are mentioned below.

Class: XSLFSlide

Package: org.apache.poi.xslf.usermodel

S. No. Methods and Description

1 XSLFBackground getBackground()

Returns the XSLFBackground object which can be used to retrieve

details like color and anchor of the background of the slide. You can
also draw shapes in the slide using this object.

2 XSLFSlideLayout getSlideLayout()

Provides access to the XSLFSlideLayout object of the current slide.

3 XSLFSlideMaster getSlideMaster()

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Apache POI – PPT

Provides access to the slide master of the current slide.

4 XSLFTheme getTheme()

Returns the XSLFTheme object of the current slide.

5 java.lang.String getTitle()

Returns the title of the current slide.

6 XSLFSlide importContent(XSLFSheet src)

Copies the contents of another slide to this slide.

Slide Master
It is the component of the presentation having different slide layouts. The
XSLFSlideMaster class gives you access to it. Mentioned below are some
important methods of this class.

Class: XSLFSlideMaster

Package: org.apache.poi.xslf.usermodel

S. No. Methods and Description

1 XSLFBackground getBackground()

Returns the common background of the slide master.

2 XSLFSlideLayout getLayout(SlideLayout type)

Returns the XSLFSlideLayout object.

3 XSLFSlideLayout[] getSlideLayouts()

Returns all the slide layouts in this slide master.

Slide Layout
The POI library has a class called XSLFSlideLayout, using which you can
manage the layouts of a slide.

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Apache POI – PPT

Class: XSLFSlideLayout

Package: org.apache.poi.xslf.usermodel

S. No. Method and Description

1 void copyLayout(XSLFSlide slide)

This method will copy the placeholders from this layout to the given
slide.

Text Paragraph
You can write content to the slide using XSLFTextParagraph class. Below
mentioned are some important methods of this class.

Class: XSLFTextParagraph

Package: org.apache.poi.xslf.usermodel

S. No. Methods and Description

1 XSLFTextRun addLineBreak()

Inserts a line break in a paragraph.

2 XSLFTextRun addNewTextRun()

Adds a new run of text in a paragraph.

3 void setBulletAutoNumber(ListAutoNumber scheme, int

startAt)

Applies automatic numbered bullet points to the paragraph.

4 void setIndent(double value)

Sets the indent to the text in the paragraph.

5 void setLeftMargin(double value)

This method is used to add the left margin of the paragraph.

6 void setLineSpacing(double linespacing)

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Apache POI – PPT

This method is used to set line spacing in the paragraph.

7 void setTextAlign(TextAlign align)

This method is used to set alignment that is to be set to the

paragraph.

Text Run
This is the lowest level of text separation within a text body. You have
XSLFTextRun class to manage the text run of a paragraph. Below mentioned
are some important methods of this class.

Class: XSLFTextParagraph

Package: org.apache.poi.xslf.usermodel

S. No. Methods and Description

1 XSLFHyperlink createHyperlink()

Creates a hyperlink in the presentation.

2 XSLFHyperlink getHyperlink()

This method is used to get the hyperlink.

3 java.lang.String getText()

Returns the value of this Text node as a Java string.

4 void setBold(boolean bold)

This method is used to set the text in Bold.

5 void setCharacterSpacing(double spc)

Sets the spacing between characters within a text run.

6 void setFontColor(java.awt.Color color)

Sets the font color of the text.

7 void setFontSize(double fontSize)

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Apache POI – PPT

Sets the font size of the text.

8 void setItalic(boolean italic)

This method is used to make the paragraph italicized.

9 void setStrikethrough(boolean strike)

This method is used to format a run of text as strikethrough text.

10 void setSubscript(boolean flag)

This method is used to format the text as subscript.

11 void setSuperscript(boolean flag)

This method is used to format the text in this run as superscript.

12 void setText(java.lang.String text)

This method is used to set the text in a run.

13 void setUnderline(boolean underline)

This method is used to underline the text in a text run.

Text shape
In PPT, we have shapes that can hold text within them. We can manage these
using XSLFTextShape class. Mentioned below are some important methods of
this class.

Class: XSLFTextShape

Package: org.apache.poi.xslf.usermodel

S. No. Methods and Description

1 void setPlaceholder(Placeholder placeholder)

Using this method, you can choose a place holder.

2 Placeholder getTextType()

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Apache POI – PPT

Returns the type of the current placeholder.

3 void clearText()

Clears the text area of the current text shape.

4 XSLFTextParagraph addNewTextParagraph()

Adds a new paragraph run to a shape.

5 void drawContent(java.awt.Graphics2D graphics)

This method allows you to draw any content on the slide.

HyperLink
The POI library has a class called XSLFHyperlink using which you can create a
hyperlink in the presentation. Mentioned below are some important methods of
this class.

Class: XSLFHyperlink
Package: org.apache.poi.xslf.usermodel

S. No. Methods and Description

1 java.net.URI getTargetURL()

Returns the URL existing in a slide of the presentation.

2 void setAddress(java.lang.String address)

This method is used to set address to a URL.

3 void setAddress(XSLFSlide slide)

Sets address to the URL present in a slide of the presentation.

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Apache POI – PPT

5. PRESENTATION

Generally, we use MS-PowerPoint to create presentations. Now let us see how to

create presentations using Java. After completion of this chapter, you will be
able to create new MS-PowerPoint presentations and open existing PPTs with
your Java program.

Creating Empty Presentation

To create an empty presentation, you have to instantiate the XMLSlideShow
class of the org.poi.xslf.usermodel package:

XMLSlideShow ppt = new XMLSlideShow();

Save the changes to a PPT document using the FileOutputStream class:

File file=new File("C://POIPPT//Examples//example1.pptx");

FileOutputStream out = new FileOutputStream(file);

ppt.write(out);

Given below is the complete program to create a blank MS-PowerPoint

presentation.

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class CreatePresentation {

public static void main(String args[]) throws IOException{

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Apache POI – PPT

//creating a new empty slide show

XMLSlideShow ppt = new XMLSlideShow();

//creating an FileOutputStream object

File file =new File("C://POIPPT//Examples//example1.pptx");

FileOutputStream out = new FileOutputStream(file);

//saving the changes to a file

ppt.write(out);

System.out.println("Presentation created successfully");

out.close();

Save the above Java code as CreatePresentation.java, and then compile and
execute it from the command prompt as follows:

$javac CreatePresentation.java

$java CreatePresentation

If your system environment is configured with the POI library, it will compile and
execute to generate a blank PPT file named example1.pptx in your current
directory and display the following output on the command prompt:

Presentation created successfully

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Apache POI – PPT

The blank PowerPoint document appears as follows:

Editing an Existing Presentation

To open an existing presentation, instantiate the XMLSlideShow class and pass
the FileInputStream object of the file to be edited, as an argument to the
XMLSlideShow constructor.

File file=new File(“C://POIPPT//Examples//example1.pptx”);

FileInputstream inputstream =new FileInputStream(file);

XMLSlideShow ppt = new XMLSlideShow(inputstream);

You can add slides to a presentation using the createSlide() method of the
XMLSlideShow class which is in the org.poi.xslf.usermodel package.

XSLFSlide slide1= ppt.createSlide();

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Apache POI – PPT

Given below is the complete program to open and add slides to an existing PPT:

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class EditPresentation {

public static void main(String ar[]) throws IOException{

//opening an existing slide show

File file=new File("C://POIPPT//Examples//example1.pptx");

FileInputStream inputstream=new FileInputStream(file);

XMLSlideShow ppt = new XMLSlideShow(inputstream);

//adding slides to it

XSLFSlide slide1= ppt.createSlide();

XSLFSlide slide2= ppt.createSlide();

//saving the changes

FileOutputStream out = new FileOutputStream(file);

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Apache POI – PPT

ppt.write(out);

System.out.println("Presentation edited successfully");

out.close();

Save the above Java code as EditPresentation.java, and then compile and
execute it from the command prompt as follows:

$javac EditPresentation.java

$java EditPresentation

It will compile and execute to generate the following output:

slides successfully added

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Apache POI – PPT

The output PPT document with newly added slides looks as follows:

After adding slides to a PPT, you can add, perform, read, and write operations
on the slides.

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Apache POI – PPT

6. SLIDE LAYOUTS

In the previous chapter, you have seen how to create empty slides and how to
add slides to it. In this chapter, you will learn how to get the list of available
slides, and how to create a slide with different layouts.

Available Slide layouts

PowerPoint presentations have slide layouts, and you can choose a desired
layout to edit a slide. First of all, let us find out the list of all the slide layouts
available.

 There are different slide masters and in each slide master, there are
several slide layouts.

 You can get the list of the slide masters using the getSlideMasters()
method of the XMLSlideShow class.

 You can get the list of the slide layouts from each slide master using the
getSlideLayouts() method of the XSLFSlideMaster class.

 You can get the name of the slide layout from the layout object using the
getType() method of the XSLFSlideLayout class.

Note: All these classes belongs to org.poi.xslf.usermodel package.

Given below is the complete program to get the list of available slide layouts in
the PPT:

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlideLayout;

import org.apache.poi.xslf.usermodel.XSLFSlideMaster;

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Apache POI – PPT

public class SlideLayouts {

public static void main(String args[]) throws IOException{

// create an empty presentation

XMLSlideShow ppt = new XMLSlideShow();

System.out.println("Available slide layouts:");

// getting the list of all slide masters

for(XSLFSlideMaster master : ppt.getSlideMasters()){

// getting the list of the layouts in each slide master

for(XSLFSlideLayout layout : master.getSlideLayouts()){

// getting the list of available slides

System.out.println(layout.getType());

Save the above Java code as SlideLayouts.java, and then compile and execute
it from the command prompt as follows:

$javac SlideLayouts.java

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Apache POI – PPT

$java SlideLayouts

It will compile and execute to generate the following output:

Available slide layouts:

TITLE

PIC_TX

VERT_TX

TWO_TX_TWO_OBJ

BLANK

VERT_TITLE_AND_TX

TITLE_AND_CONTENT

TITLE_ONLY

SECTION_HEADER

TWO_OBJ

OBJ_TX

Shown below are some of the sample slide layouts available with MS-Office 360,
2013 edition.

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Apache POI – PPT

Title Layout
Let us create a slide in a PPT using Title layout. Follow the steps given below:

Step 1: Create an empty presentation by instantiating the XMLSlideShow class

as shown below:

XMLSlideShow ppt = new XMLSlideShow();

Step 2: Get the list of slide masters using the getSlideMasters() method.
Thereafter, select the desired slide master using the index as shown below:

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

Here we are getting the default slide master which is in the 0th location of the
slide masters array.

Step 3: Get the desired layout using the getLayout() method of the
XSLFSlideMaster class. This method accepts a parameter where you have to
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Apache POI – PPT

pass one of the static variable of the SlideLayoutclass, which represents our
desired layout. There are several variables in this class where each variable
represents a slide layout.

The code snippet given below shows how to create a title layout:

XSLFSlideLayout titleLayout = slideMaster.getLayout(SlideLayout.TITLE);

Step 4: Create a new slide by passing a slide layout object as parameter.

XSLFSlide slide = ppt.createSlide(titleLayout);

Step 5: Select a placeholder using the getPlaceholder() method of the

XSLFSlide class. This method accepts an integer parameter. By passing 0 to it,
you will get the XSLFTextShape object, using which you can access the title
text area of the slide. Set the title using the setText() method as shown below:

XSLFTextShape title1 = slide.getPlaceholder(0);

//setting the title init

title1.setText("Tutorials point");

Given below is the complete program to create a slide with Title layout in a
presentation:

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.SlideLayout;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

import org.apache.poi.xslf.usermodel.XSLFSlideLayout;

import org.apache.poi.xslf.usermodel.XSLFSlideMaster;

import org.apache.poi.xslf.usermodel.XSLFTextShape;

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Apache POI – PPT

public class TitleLayout {

public static void main(String args[]) throws IOException{

// creating presentation

XMLSlideShow ppt = new XMLSlideShow();

// getting the slide master object

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

// get the desired slide layout

XSLFSlideLayout titleLayout =

slideMaster.getLayout(SlideLayout.TITLE);

// creating a slide with title layout

XSLFSlide slide1 = ppt.createSlide(titleLayout);

// selecting the place holder in it

XSLFTextShape title1 = slide1.getPlaceholder(0);

// setting the title init

title1.setText("Tutorials point");

// create a file object

File file=new File("C://POIPPT//Examples//Titlelayout.pptx");

FileOutputStream out = new FileOutputStream(file);

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Apache POI – PPT

// save the changes in a PPt document

ppt.write(out);

System.out.println("slide cretated successfully");

out.close();

Save the above Java code as TitleLayout.java, and then compile and execute it
from the command prompt as follows:

$javac TitleLayout.java

$java TitleLayout

It will compile and execute to generate the following output.

slide created successfully

The PPT document with newly added Title layout slide appears as follows:

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Apache POI – PPT

Title and content Layout

Let us create a slide in a PPT using Title and content layout. Follow the steps
given below.

Step 1: Create an empty presentation by instantiating the XMLSlideShow class

as shown below:

XMLSlideShow ppt = new XMLSlideShow();

Step 2: Get the list of slide masters using the getSlideMasters() method.
Select the desired slide master using the index as shown below:

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

Here we are getting the default slide master which is in the 0th location of the
slide masters array.

Step 3: Get the desired layout using the getLayout() method of the
XSLFSlideMaster class. This method accepts a parameter where you have to
pass one of the static variable of the SlideLayout class which represents our
desired layout. There are several variables in this class that represent slide
layouts.

The following code snippet shows how to create title and content layout:

XSLFSlideLayout contentlayout =
slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

Step 4: Create a new slide by passing the slide layout object as parameter.

XSLFSlide slide = ppt.createSlide(SlideLayout.TITLE_AND_CONTENT);

Step 5: Select a placeholder using the getPlaceholder() method of the

XSLFSlide class. This method accepts an integer parameter. By passing 1 to it,
you will get the XSLFTextShape object, using which you can access the content
area of the slide. Set the title using the setText() method as shown below:

XSLFTextShape title1 = slide1.getPlaceholder(1);

//setting the title init

title1.setText("Introduction");

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Apache POI – PPT

Step 6: Clear the existing text in the slide using the clearText() method of the
XSLFTextShape class.

body.clearText();

Step 7: Add new paragraph using the addNewTextParagraph() method. Now

add a new text run to the paragraph using the addNewTextRun() method.
Now to the text run, add text using the setText() method as shown below:

body.addNewTextParagraph().addNewTextRun().setText("this is my first
slide body");

Given below is the complete program to create a slide with Title layout in a
presentation:

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.SlideLayout;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

import org.apache.poi.xslf.usermodel.XSLFSlideLayout;

import org.apache.poi.xslf.usermodel.XSLFSlideMaster;

import org.apache.poi.xslf.usermodel.XSLFTextShape;

public class TitleAndBodyLayout {

public static void main(String args[]) throws IOException{

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Apache POI – PPT

//creating presentation

XMLSlideShow ppt = new XMLSlideShow();

//getting the slide master object

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

//select a layout from specified list

XSLFSlideLayout slidelayout =

slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

//creating a slide with title and content layout

XSLFSlide slide = ppt.createSlide(slidelayout);

//selection of title place holder

XSLFTextShape title = slide.getPlaceholder(0);

//setting the title in it

title.setText("introduction");

//selection of body placeholder

XSLFTextShape body = slide.getPlaceholder(1);

//clear the existing text in the slide

body.clearText();

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//adding new paragraph

body.addNewTextParagraph().addNewTextRun().setText("this is my

first slide body");

//create a file object

File file=new File("C://POIPPT//Examples//contentlayout.pptx");

FileOutputStream out = new FileOutputStream(file);

//save the changes in a file

ppt.write(out);

System.out.println("slide cretated successfully");

out.close();

Save the above Java code as TitleLayout.java, and then compile and execute it
from the command prompt as follows:

$javac TitleLayout.java

$java TitleLayout

It will compile and execute to generate the following output:

slide created successfully

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The PPT document with newly added Title layout slide appears as follows:

In the same way, you can create slides with different layouts as well.

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7. MANAGEMENT OF SLIDES

After completing this chapter, you will be able to delete, reorder, and perform
read and write operations on a slide.

Changing a Slide
We can change the page size of a slide using the setPageSize() method of the
XMLSlideShow class.

Initially create a presentation as shown below:

File file=new File("C://POIPPT//Examples// TitleAndContentLayout.pptx");

//create presentation

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

Get the size of the current slide using the getPageSize() method of the
XMLSlideShow class.

java.awt.Dimension pgsize = ppt.getPageSize();

Set the size of the page using the setPageSize() method.

ppt.setPageSize(new java.awt.Dimension(1024, 768));

The complete program for changing the size of a slide is given below:

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

public class ChangingSlide {

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public static void main(String args[]) throws IOException{

//create file object

File file = new File("C://POIPPT//Examples//

TitleAndContentLayout.pptx");

//create presentation

XMLSlideShow ppt = new XMLSlideShow();

// getting the current page size

java.awt.Dimension pgsize = ppt.getPageSize();

int pgw = pgsize.width; //slide width in points

int pgh = pgsize.height; //slide height in points

System.out.println("current page size of the PPT is:");

System.out.println("width :"+pgw);

System.out.println("height :"+pgh);

//set new page size

ppt.setPageSize(new java.awt.Dimension(2048,1536));

//creating file object

FileOutputStream out = new FileOutputStream(file);

//saving the changes to a file

ppt.write(out);

System.out.println("slide size changed to given dimentions ");

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out.close();

Save the above Java code as ChangingSlide.java, and then compile and
execute it from the command prompt as follows:

$javac ChangingSlide.java

$java ChangingSlide

It will compile and execute to generate the following output.

current page size of the presentation is :

width :720

height :540

slide size changed to given dimensions

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Given below is the snapshot of the presentation before changing the slide size:

The slide appears as follows after changing its size:

Reordering Slides
You can set the slide order using the setSlideOrder() method. Given below is
the procedure to set the order of the slides.

Open an existing PPT document as shown below:

File file=new File("C://POIPPT//Examples//example1.pptx");

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

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Get the slides using the getSlides() method as shown below:

XSLFSlide[] slides =ppt.getSlides();

Select a slide from the array of the slides, and change the order using the
setSlideOrder() method as shown below:

//selecting the fourth slide

XSLFSlide selectesdslide= slides[4];

//bringing it to the top

ppt.setSlideOrder(selectesdslide, 1);

Given below is the complete program to reorder the slides in a presentation:

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class ReorderSlide {

public static void main(String args[]) throws IOException{

//opening an existing presentation

File file=new File("C://POIPPT//Examples//example1.pptx");

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

//get the slides

XSLFSlide[] slides =ppt.getSlides();

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//selecting the fourth slide

XSLFSlide selectesdslide= slides[13];

//bringing it to the top

ppt.setSlideOrder(selectesdslide, 0);

//creating an file object

FileOutputStream out = new FileOutputStream(file);

//saving the changes to a file

ppt.write(out);

out.close();

Save the above Java code as ReorderSlide.java, and then compile and execute
it from the command prompt as follows:

$javac ReorderSlide.java

$java ReorderSlide

It will compile and execute to generate the following output.

Reordering of the slides is done

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Given below is the snapshot of the presentation before reordering the slides:

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After reordering the slides, the presentation appears as follows. Here we have
selected the slide with image and moved it to the top.

Deleting Slides
You can delete the slides using the removeSlide() method. Follow the steps
given below to delete slides.

Open an existing presentation using the XMLSlideShow class as shown below:

File file=new File("C://POIPPT//Examples//image.pptx");

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

Delete the required slide using the removeSlide() method. This method
accepts an integer parameter. Pass the index of the slide that is to be deleted to
this method.
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ppt.removeSlide(1);

Given below is the program to delete slides from a presentation:

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

public class Deleteslide {

public static void main(String args[]) throws IOException{

//Opening an existing slide

File file=new File("C://POIPPT//Examples//image.pptx");

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

//deleting a slide

ppt.removeSlide(1);

//creating a file object

FileOutputStream out = new FileOutputStream(file);

//Saving the changes to the presentation

ppt.write(out);

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out.close();

Save the above Java code as Deleteslide.java, and then compile and execute it
from the command prompt as follows:

$javac Deleteslide.java

$java Deleteslide

It will compile and execute to generate the following output:

reordering of the slides is done

The snapshot below is of the presentation before deleting the slide:

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After deleting the slide, the presentation appears as follows:

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8. IMAGES

In this chapter, you will learn how to add an image to a PPT and how to read an
image from it.

Adding Image
You can add images to a presentation using the createPicture() method of
XSLFSlide. This method accepts image in the form of byte array format.
Therefore, you have to create a byte array of the image that is to be added to
the presentation.

Follow the given procedure to add an image to a presentation. Create an empty

slideshow using XMLSlideShow as shown below:

XMLSlideShow ppt = new XMLSlideShow();

Create an empty presentation in it using createSlide().

XSLFSlide slide = ppt.createSlide();

Read the image file that is to be added and convert it into byte array using
IOUtils.toByteArray() of the IOUtils class as shown below:

//reading an image

File image=new File("C://POIPPT//boy.jpg");

//converting it into a byte array

byte[] picture = IOUtils.toByteArray(new FileInputStream(image));

Add the image to the presentation using addPicture(). This method accepts
two variables: byte array format of the image that is to be added and the static
variable representing the file format of the image. The usage of the
addPicture() method is shown below:

int idx = ppt.addPicture(picture, XSLFPictureData.PICTURE_TYPE_PNG);

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Embed the image to the slide using createPicture() as shown below:

XSLFPictureShape pic = slide.createPicture(idx);

Given below is the complete program to add an image to the slide in a

presentation:

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.util.IOUtils;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFPictureData;

import org.apache.poi.xslf.usermodel.XSLFPictureShape;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class AddingImage {

public static void main(String args[]) throws IOException{

//creating a presentation

XMLSlideShow ppt = new XMLSlideShow();

//creating a slide in it

XSLFSlide slide = ppt.createSlide();

//reading an image

File image=new File("C://POIPPT//boy.jpg");

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//converting it into a byte array

byte[] picture = IOUtils.toByteArray(new FileInputStream(image));

//adding the image to the presentation

int idx = ppt.addPicture(picture,

XSLFPictureData.PICTURE_TYPE_PNG);

//creating a slide with given picture on it

XSLFPictureShape pic = slide.createPicture(idx);

//creating a file object

File file=new File("C://POIPPT//Examples//addingimage.pptx");

FileOutputStream out = new FileOutputStream(file);

//saving the changes to a file

ppt.write(out);

System.out.println("image added successfully");

out.close();

Save the above Java code as AddingImage.java, and then compile and
execute it from the command prompt as follows:

$javac AddingImage.java

$java AddingImage

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It will compile and execute to generate the following output:

reordering of the slides is done

The presentation with the newly added slide with image appears as follows:

Reading Image
You can get the data of all the pictures using the getAllPictures() method of
the XMLSlideShow class. The following program reads the images from a
presentation:

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

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import org.apache.poi.xslf.usermodel.XSLFPictureData;

public class Readingimage {

public static void main(String args[]) throws IOException{

//open an existing presentation

File file=new File("C://POIPPT//Examples//addingimage.pptx");

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

//reading all the pictures in the presentation

for(XSLFPictureData data : ppt.getAllPictures()){

byte[] bytes = data.getData();

String fileName = data.getFileName();

int pictureFormat=data.getPictureType();

System.out.println("picture name: "+fileName);

System.out.println("picture format: "+pictureFormat);

//saving the changes to a file

FileOutputStream out = new FileOutputStream(file);

ppt.write(out);

out.close();

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Save the above Java code as Readingimage.java, and then compile and
execute it from the command prompt as follows:

$javac Readingimage.java

$java Readingimage

It will compile and execute to generate the following output:

picture name: image1.png

picture format: 6

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9. CREATING HYPERLINKS

In this chapter you will learn how to create hyperlinks in a presentation.

Creating Hyperlinks
You can read the hyperlinks in a presentation using the createHyperlink()
method of the XSLFTextRun class. Follow the procedure given below to create
a hyperlink in a presentation.

Create an empty presentation using the XMLSlideShow class as shown below:

XMLSlideShow ppt = new XMLSlideShow();

Create an empty slide and create a textbox and body of the slide using body and
content layout.

//create an empty presentation

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

//creating a slide with title and content layout

XSLFSlideLayout slidelayout =
slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

XSLFSlide slide = ppt.createSlide(slidelayout);

//selection of body place holder

XSLFTextShape body = slide.getPlaceholder(1);

//clear the existing text in the slide

body.clearText();

Create a text run object and set text to it as shown below:

XSLFTextRun textRun=body.addNewTextParagraph().addNewTextRun();

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Apache POI – PPT

textRun.setText("Tutorials point");

Create a hyperlink using the createHyperlink() method of the XSLFTextRun

class as shown below:

XSLFHyperlink link = textRun.createHyperlink();

Set the link address to the hyperlink using the setAddress() method of
XSLFHyperlink class as shown below:

link.setAddress("http://www.tutorialspoint.com/");

Given below is the complete program to create hyperlink in a presentation:

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.SlideLayout;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFHyperlink;

import org.apache.poi.xslf.usermodel.XSLFSlide;

import org.apache.poi.xslf.usermodel.XSLFSlideLayout;

import org.apache.poi.xslf.usermodel.XSLFSlideMaster;

import org.apache.poi.xslf.usermodel.XSLFTextRun;

import org.apache.poi.xslf.usermodel.XSLFTextShape;

public class CreatingHyperlinks {

public static void main(String args[]) throws IOException{

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//create an empty presentation

XMLSlideShow ppt = new XMLSlideShow();

//getting the slide master object

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

//select a layout from specified list

XSLFSlideLayout

slidelayout=slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

//creating a slide with title and content layout

XSLFSlide slide = ppt.createSlide(slidelayout);

//selection of title place holder

XSLFTextShape body = slide.getPlaceholder(1);

//clear the existing text in the slide

body.clearText();

//adding new paragraph

XSLFTextRun textRun = body.addNewTextParagraph().addNewTextRun();

//setting the text

textRun.setText("Tutorials point");

//creating the hyperlink

XSLFHyperlink link = textRun.createHyperlink();

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//setting the link address

link.setAddress("http://www.tutorialspoint.com/");

//create the file object

File file=new File("C://POIPPT//Examples//hyperlink.pptx");

FileOutputStream out = new FileOutputStream(file);

//save the changes in a file

ppt.write(out);

System.out.println("slide cretated successfully");

out.close();

Save the above Java code as CreatingHyperlinks.java, and then compile and
execute it from the command prompt as follows:

$javac CreatingHyperlinks.java

$java CreatingHyperlinks

It will compile and execute to generate the following output:

slide cretated successfully

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The newly added slide with the hyperlink in its body looks as follows:

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10. READING SHAPES

Reading Shapes from a Presentation

You can get a count of the number of shapes used in a presentation using the
method getShapeName() of the XSLFShape class. Given below is the
program to read the shapes from a presentation:

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFShape;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class ReadingShapes {

public static void main(String args[]) throws IOException{

File file=new File("C://POIPPT//Examples//shapes.pptx");

XMLSlideShow ppt = new XMLSlideShow(new

FileInputStream(file));

//get slides

XSLFSlide[] slide = ppt.getSlides();

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//getting the shapes in the presentation

System.out.println("Shapes in the presentation:");

for (int i = 0; i < slide.length; i++){

XSLFShape[] sh = slide[i].getShapes();

for (int j = 0; j < sh.length; j++){

//name of the shape

System.out.println(sh[j].getShapeName());

FileOutputStream out = new FileOutputStream(file);

ppt.write(out);

out.close();

Save the above Java code as ReadingShapes.java, and then compile and
execute it from the command prompt as follows:

$javac ReadingShapes.java

$java ReadingShapes

It will compile and execute to generate the following output.

Shapes in the presentation:

Rectangle 1

Oval 1

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Isosceles Triangle 1

The newly added slide with the various shapes appears as follows:

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11. FORMATTING TEXT

Formatting Text in a Presentation

The text in a presentation can be formatted using the methods of the
XSLFTextRun class. For that, you have to create an XSLFTextRun class object
by selecting one of the slide layouts as shown below:

//create the empty presentation

XMLSlideShow ppt = new XMLSlideShow();

//getting the slide master object

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

//select a layout from specified list

XSLFSlideLayout slidelayout =
slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

//creating a slide with title and content layout

XSLFSlide slide = ppt.createSlide(slidelayout);

//selection of title place holder

XSLFTextShape body = slide.getPlaceholder(1);

//clear the existing text in the slide

body.clearText();

//adding new paragraph

XSLFTextParagraph paragraph=body.addNewTextParagraph();

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//creating text run object

XSLFTextRun run = paragraph.addNewTextRun();

You can set the font size of the text in the presentation using setFontSize().

run.setFontColor(java.awt.Color.red);

run.setFontSize(24);

The following code snippet shows how to apply different formatting styles (bold,
italic, underline, strikeout) to the text in a presentation.

//change the text into bold format

run.setBold(true);

//change the text it to italic format

run.setItalic(true)

// strike through the text

run.setStrikethrough(true);

//underline the text

run.setUnderline(true);

To have line breaks between paragraphs, use addLineBreak() of the

XSLFTextParagraph class as shown below:

paragraph.addLineBreak();

Given below is the complete program to format the text using all the above
methods:

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import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.SlideLayout;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

import org.apache.poi.xslf.usermodel.XSLFSlideLayout;

import org.apache.poi.xslf.usermodel.XSLFSlideMaster;

import org.apache.poi.xslf.usermodel.XSLFTextParagraph;

import org.apache.poi.xslf.usermodel.XSLFTextRun;

import org.apache.poi.xslf.usermodel.XSLFTextShape;

public class TextFormating {

public static void main(String args[]) throws IOException{

//creating an empty presentation

XMLSlideShow ppt = new XMLSlideShow();

//getting the slide master object

XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

//select a layout from specified list

XSLFSlideLayout slidelayout =

slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

//creating a slide with title and content layout

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XSLFSlide slide = ppt.createSlide(slidelayout);

//selection of title place holder

XSLFTextShape body = slide.getPlaceholder(1);

//clear the existing text in the slide

body.clearText();

//adding new paragraph

XSLFTextParagraph paragraph=body.addNewTextParagraph();

//formatting line1

XSLFTextRun run1 = paragraph.addNewTextRun();

run1.setText("This is a colored line");

//setting color to the text

run1.setFontColor(java.awt.Color.red);

//setting font size to the text

run1.setFontSize(24);

//moving to the next line

paragraph.addLineBreak();

//formatting line2

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XSLFTextRun run2 = paragraph.addNewTextRun();

run2.setText("This is a bold line");

run2.setFontColor(java.awt.Color.CYAN);

//making the text bold

run2.setBold(true);

paragraph.addLineBreak();

//formatting line3

XSLFTextRun run3 = paragraph.addNewTextRun();

run3.setText(" This is a striked line");

run3.setFontSize(12);

//making the text italic

run3.setItalic(true);

//strike through the text

run3.setStrikethrough(true);

paragraph.addLineBreak();

//formatting line4

XSLFTextRun run4 = paragraph.addNewTextRun();

run4.setText(" This an underlined line");

run4.setUnderline(true);

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//underlining the text

paragraph.addLineBreak();

//creating a file object

File file=new File(“C://POIPPT//Examples//TextFormat.pptx”);

FileOutputStream out = new FileOutputStream(file);

saving the changes to a file

ppt.write(out);

out.close();

Save the above code as TextFormating.java, and then compile and execute it
from the command prompt as follows:

$javac TextFormating.java

$java TextFormating

It will compile and execute to generate the following output:

Formatting completed successfully

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The slide with formatted text appears as follows:

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12. MERGING

Merging Multiple Presentations

You can merge multiple presentations using the importContent() method of
the XMLSlideShow class. Given below is the complete program to merge two
presentations:

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class MergingMultiplePresentations {

public static void main(String args[]) throws IOException{

//creating empty presentation

XMLSlideShow ppt = new XMLSlideShow();

//taking the two presentations that are to be merged

String file1= "C://POIPPT//Examples//presentation1.pptx";

String file2= "C://POIPPT//Examples//presentation2.pptx";

String[] inputs = {file1, file2};

for(String arg : inputs){

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FileInputStream inputstream = new FileInputStream(arg);

XMLSlideShow src = new XMLSlideShow(inputstream);

for(XSLFSlide srcSlide : src.getSlides()){

//merging the contents

ppt.createSlide().importContent(srcSlide);

String file3 = "C://POIPPT//Examples//combinedpresentation.pptx";

//creating the file object

FileOutputStream out = new FileOutputStream(file3);

// saving the changes to a file

ppt.write(out);

System.out.println("Merging done successfully");

out.close();

Save the above code as MergingMultiplePresentations.java, and then

compile and execute it from the command prompt as follows:

$javac MergingMultiplePresentations.java

$java MergingMultiplePresentations

It will compile and execute to generate the following output:

Merging done successfully

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The following snapshot shows the first presentation:

The following snapshot shows the second presentation:

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Given below is the output of the program after merging the two slides. Here you
can see the content of the earlier slides merged together.

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13. PPT TO IMAGE

Converting Presentation to Image

You can convert a presentation to an image file. The following program shows
how to go about it.

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.poi.xslf.usermodel.XMLSlideShow;

import org.apache.poi.xslf.usermodel.XSLFSlide;

public class PpttoPNG {

public static void main(String args[]) throws IOException{

//creating an empty presentation

File file=new File("C://POIPPT//Examples//addingimage.pptx");

XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file));

//getting the dimensions and size of the slide

Dimension pgsize = ppt.getPageSize();

XSLFSlide[] slide = ppt.getSlides();

for (int i = 0; i < slide.length; i++) {

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BufferedImage img = new BufferedImage(pgsize.width,

pgsize.height,BufferedImage.TYPE_INT_RGB);

Graphics2D graphics = img.createGraphics();

//clear the drawing area

graphics.setPaint(Color.white);

graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width,

pgsize.height));

//render

slide[i].draw(graphics);

//creating an image file as output

FileOutputStream out = new

FileOutputStream("C://POIPPT//ppt_image.png");

javax.imageio.ImageIO.write(img, "png", out);

ppt.write(out);

System.out.println("Image successfully created");

out.close();

Save the above Java code as PpttoPNG.java, and then compile and execute it
from the command prompt as follows:

$javac PpttoPNG.java

$java PpttoPNG

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It will compile and execute to generate the following output:

Image created successfully

The following snapshot shows the presentation that is given as input:

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Apache POI – PPT

Given below is the snapshot of the image created at the specified location.

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