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Java PrintWriter flush() Method with Example

PrintWriter Class flush() method: Here, we are going to learn about the flush() method of PrintWriter Class with its syntax and example.
Submitted by Preeti Jain, on April 19, 2020

PrintWriter Class flush() method

  • flush() method is available in java.io package.
  • flush() method is used to flush this stream.
  • flush() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
  • flush() method does not throw an exception at the time of flushing the stream.

Syntax:

    public void flush();

Parameter(s):

  • It does not accept any parameter.

Return value:

The return type of the method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void flush() method of PrintWriter

import java.io.*;

public class FlushOfPW {
    public static void main(String[] args) {
        String str = "Java Programming";

        // Instantiates PrintWriter
        PrintWriter p_stm = new PrintWriter(System.out);

        // Display str
        p_stm.println("str: " + str);

        // By using flush() method is to flush
        // the stream i.e. write the byte out
        // immediately
        p_stm.flush();
        System.out.println("Stream Flushed...");
    }
}

Output

str: Java Programming
Stream Flushed...






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