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Showing content from https://www.geeksforgeeks.org/java/java-io-printstream-class-java-set-2/ below:

Java.io.Printstream Class in Java | Set 2

Last Updated : 01 May, 2024

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

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