Java.io.ObjectInputStream.read() Method

Description

The java.io.ObjectInputStream.read() method reads a byte of data. This method will block if no input is available.

Declaration

Following is the declaration for java.io.ObjectInputStream.read() method

public int read()

Parameters

• NA

Return Value

This method returns the byte read, or -1 if the end of the stream is reached.

Exception

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

Example

The following example shows the usage of java.io.ObjectInputStream.read() method.

package com.tutorialspoint;

import java.io.*;

public class ObjectInputStreamDemo {

   public static void main(String[] args) {

      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.writeUTF("Hello World");
         oout.flush();

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

         // read from the stream
         for (int i = 0; i < ois.available();) {
            System.out.print("" + (char) ois.read());
         }

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

   }
}

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

Hello World