Java.io.ObjectOutputStream.flush() Method

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Description

The java.io.ObjectOutputStream.flush() method flushes the stream. This will write any buffered output bytes and flush through to the underlying stream.

Declaration

Following is the declaration for java.io.ObjectOutputStream.flush() method

public void flush()

Parameters

  • NA

Return Value

This method does not return a value.

Exception

  • IOException -- If an I/O error has occurred.

Example

The following example shows the usage of java.io.ObjectOutputStream.flush() method.

package com.tutorialspoint;

import java.io.*;

public class ObjectOutputStreamDemo {

   public static void main(String[] args) {

      int i = 319874;
      try {

         // create a new file with an ObjectOutputStream
         FileOutputStream out = new FileOutputStream("test.txt");
         ObjectOutputStream oout = new ObjectOutputStream(out);

         // write something in the file
         oout.writeInt(i);
         oout.writeInt(1653984);

         // flush the stream
         oout.flush();

         // close the stream
         oout.close();

         // create an ObjectInputStream for the file we created before
         ObjectInputStream ois =
                 new ObjectInputStream(new FileInputStream("test.txt"));

         // read and print an int
         System.out.println("" + ois.readInt());

         // read and print an int
         System.out.println("" + ois.readInt());

      } catch (Exception ex) {
         ex.printStackTrace();
      }

   }
}

Let us compile and run the above program, this will produce the following result:

319874
1653984



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