Java.io.Printstream Class in Java | Set 2

More Methods:

• PrintStream printf(Locale l, String format, Object... args) : A convenience method to write a formatted string to this output stream using the specified format string and arguments.

  Syntax :public PrintStream printf(Locale l,
   String format,
   Object... args)
  Parameters:
  l - The locale to apply during formatting. If l is null then no localization is applied.
  format - A format string as described in Format string syntax
  args - Arguments referenced by the format specifiers in the format string.
  Returns:
  This output stream
  Throws:
  IllegalFormatException 
  NullPointerException

  Java

  //Java program to demonstrate printf method import java.io.*; import java.util.Locale; class PrintStreamDemo  {  public static void main(String[] args)   {  String s = "for";    // create printstream object  PrintStream printStream = new PrintStream(System.out);    // illustrating printf(Locale l, String format, Object... args) method  printStream.printf(Locale.US, "Geeks%sGeeks", s);  } } 

  Output:
  GeeksforGeeks

• PrintStream printf(String format, Object... args) : A convenience method to write a formatted string to this output stream using the specified format string and arguments.

  Syntax :public PrintStream printf(String format,
   Object... args)
  Parameters:
  format - A format string as described in Format string syntax
  args - Arguments referenced by the format specifiers in the format string.
  Returns:
  This output stream
  Throws:
  IllegalFormatException 
  NullPointerException 

  Java

  //Java program to demonstrate printf(String format, Object... args) method import java.io.*; public class PrintStreamDemo  {  public static void main(String[] args)  {  String s = "for";    // create printstream object  PrintStream obj= new PrintStream(System.out);    // illustrating printf(String format, Object... args) method  obj.printf("Geeks%sGeeks", s);  } } 

  Output:
  GeeksforGeeks

• void println(): Terminates the current line by writing the line separator string.

  Syntax :public void println()

  Java

  //Java program to demonstrate println() methods import java.io.PrintStream; class PrintStreamDemo {  public static void main(String[] args)  {  PrintStream obj = new PrintStream(System.out);    //illustrating println();  obj.println("GeeksforGeeks");  } } 

  Output:
  GeeksforGeeks

• void println(boolean x): Prints a boolean and then terminate the line.

  Syntax :public void println(boolean x)

  Java

  //Java program to demonstrate println(boolean) method import java.io.*; class PrintStreamDemo  {  public static void main(String[] args)   {  // create printstream object  PrintStream obj = new PrintStream(System.out);  //illustrating println(boolean) method  obj.println(true);  // flush the stream  obj.flush();  } } 

  Output:
  true

• void println(char x): Prints a character and then terminate the line.

  Syntax :public void println(char x)

  Java

  //Java program to demonstrate println(char x) method import java.io.*; public class PrintStreamDemo  {  public static void main(String[] args)   {  char c = 'g';    // create printstream object  PrintStream obj = new PrintStream(System.out);    // illustrating println(char x)  obj.println(c);    // flush the stream  obj.flush();    } } 

  Output:
  g

• void println(char[] x): Prints an array of characters and then terminate the line.

  Syntax :public void println(char[] x)

  Java

  //Java program to demonstrate println(char[] x) method import java.io.*; public class PrintStreamDemo  {  public static void main(String[] args)   {  char[] c = {'G', 'E', 'E','K'};    // create printstream object  PrintStream obj = new PrintStream(System.out);    // illustrating println(char[] x)  obj.println(c);    // flush the stream  obj.flush();  } } 

  Output:
  GEEK
  

• void println(double x): Prints a double and then terminate the line.

  Syntax :public void println(double x)

  Java

  //Java program to demonstrate println(double x) method import java.io.*; public class PrintStreamDemo {  public static void main(String[] args)   {  double c = 5.42762;    // create printstream object  PrintStream obj = new PrintStream(System.out);    // illustrating println(double x)  obj.println(c);    // flush the stream  obj.flush();  } } 

  Output:

  5.42762

• void println(float x): Prints a float and then terminate the line.

  Syntax :public void println(float x)

  Java

  //Java program to demonstrate println(float x) method import java.io.*; public class PrintStreamDemo {  public static void main(String[] args)   {  float c = 5.168502f;    // create printstream object  PrintStream obj = new PrintStream(System.out);    // illustrating println(float x)  obj.println(c);    // flush the stream  obj.flush();  } } 

  Output:

  5.168502f

• void println(int x): Prints an integer and then terminate the line.

  Syntax :public void println(boolean x)

  Java

  //Java program to demonstrate println(int x) method import java.io.*; public class PrintStreamDemo {  public static void main(String[] args)  {    int c = 5;    // create printstream object  PrintStream obj = new PrintStream(System.out);    // illustrating println(int x)  obj.println(c);    // flush the stream  obj.flush();  } } 

  Output:

  5
  

• void println(long x): Prints a long and then terminate the line.

  Syntax :public void println(long x)

  Java

  //Java program to demonstrate println(long x) method import java.io.*; public class PrintStreamDemo  {  public static void main(String[] args)  {  long c = 123456789l;  try   {  // create printstream object  PrintStream obj= new PrintStream(System.out);    // illustrating println(long x)  obj.println(c);    // flush the stream  obj.flush();  }  catch (Exception ex)  {  ex.printStackTrace();  }  } } 

  Output:

  123456789

• void println(Object x) :Prints an Object and then terminate the line.

  Syntax :public void println(Object x)

  Java

  //Java program to demonstrate println(Object x) method import java.io.*; public class PrintStreamDemo  {    public static void main(String[] args)   {  // create printstream object  PrintStream obj = new PrintStream(System.out);    //illustrating println(Object X)  obj.println(obj);    // flush the stream  obj.flush();  } } 

  Output:

  java.io.PrintStream@15db9742

• void println(String x) :Prints a String and then terminate the line.

  Syntax :public void println(boolean x)

  Java

  import java.io.*; //Java program to demonstrate println(String x) method public class PrintStreamDemo  {  public static void main(String[] args)   {  String c = "GeeksforGeeks";    // create printstream object  PrintStream ps = new PrintStream(System.out);    // illustrating println(String x)  ps.println(c);    // flush the stream  ps.flush();  } } 

  Output:

  GeeksforGeeks

• protected void setError() :Sets the error state of the stream to true.

  Syntax :public void println(String x)

  Java

  //Java program to demonstrate setError() method import java.io.*; public class PrintStreamDemo extends PrintStream  {  public PrintStreamDemo(OutputStream out)   {  super(out);  }  public static void main(String[] args)   {  byte c[] = {65, 66, 67, 68, 69, 70, 71};    // create printstream object  PrintStreamDemo obj = new PrintStreamDemo(System.out);    // illustrating write() method  obj.write(c, 1, 3);    // flush the stream  obj.flush();    //illustrating setError() method   obj.setError();  } } 

  Output:

  BCD
  

• void write(byte[] buf, int off, int len) :Writes len bytes from the specified byte array starting at offset off to this stream.

  Syntax :public void write(byte[] buf,
   int off,
   int len)
  Overrides:
  write in class FilterOutputStream
  Parameters:
  buf - A byte array
  off - Offset from which to start taking bytes
  len - Number of bytes to write

  Java

  //Java program to demonstrate write(int b) method import java.io.*; public class PrintStreamDemo  {  public static void main(String[] args)   {  byte c = 65;    // create printstream object  PrintStream obj = new PrintStream(System.out);    //illustrating write(int b)  obj.write(c);    // flush the stream  obj.flush();    } } 

  Output:

  BCD

• void write(int b) :Writes the specified byte to this stream.

  Syntax :public void write(int b)
  Overrides:
  write in class FilterOutputStream
  Parameters:
  b - The byte to be written

  Java

  //Java program to demonstrate write(int b) method import java.io.*; public class PrintStreamDemo  {  public static void main(String[] args)   {  byte c = 65;    // create printstream object  PrintStream obj = new PrintStream(System.out);    //illustrating write(int b)  obj.write(c);    // flush the stream  obj.flush();    } } 

  Output:

  A