Java.lang.Process.getOutputStream() Method

Description

The java.lang.Process.getOutputStream() method gets the output stream of the subprocess. Output to the stream is piped into the standard input stream of the process represented by this Process object.

Declaration

Following is the declaration for java.lang.Process.getOutputStream() method

public abstract OutputStream getOutputStream()

Parameters

NA

Return Value

This method returns the output stream connected to the normal input of the subprocess.

Exception

NA

Example

The following example shows the usage of lang.Process.getOutputStream() method.

package com.tutorialspoint;

import java.io.BufferedOutputStream;
import java.io.OutputStream;

public class ProcessDemo {

   public static void main(String[] args) {
      try {
         // create a new process
         System.out.println("Creating Process...");
         Process p = Runtime.getRuntime().exec("notepad.exe");

         // get the output stream
         OutputStream out = p.getOutputStream();

         // close the output stream
         System.out.println("Closing the output stream...");
         out.close();
      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
}

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

Creating Process...
Closing the output stream...