What does the StringBuffer append() method do in Java?

The StringBuffer append() method appends the String representation of the particular argument to the sequence. It is a method of the java.lang.StringBuffer class. This method returns a reference to the object.

The basic syntax for append() method is as follows −

public StringBuffer append(data_type variable_name)

A program to illustrate the use of append() method is given as follows −

Example

 Live Demo

import java.lang.*; public class Example {    public static void main(String[] args) {       StringBuffer s1 = new StringBuffer("The sun rises in the east ");       System.out.println("Statement : " + s1);       s1.append(true);       System.out.println("Outcome : " + s1+"\n");       StringBuffer s2 = new StringBuffer("Hello ");       System.out.println("Statement : " + s2);       s2.append("World");       System.out.println("Output: " + s2+"\n");       char c = 'A';       StringBuffer s3 = new StringBuffer("Apple starts with ");       System.out.println("Statement : " + s3);       s3.append(c);       System.out.println("Output : " + s3);    } }

Output

Statement : The sun rises in the east Outcome : The sun rises in the east true Statement : Hello Output: Hello World Statement : Apple starts with Output : Apple starts with A