Java Process destroy() Method

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Description

The Java Process destroy() method kills the subprocess. The subprocess represented by this Process object is forcibly terminated.

Declaration

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

public abstract void destroy()

Parameters

NA

Return Value

This method does not return a value.

Exception

NA

Destroying a Notepad Process Example

The following example shows the usage of Process destroy() method. We've created a Process object for notepad executable. Then we've kept system to wait for 10 seconds and then using destroy() method, notepad process is killed and a message is printed.

package com.tutorialspoint;

public class ProcessDemo {

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

         // wait 10 seconds
         System.out.println("Waiting...");
         Thread.sleep(10000);

         // kill the process
         p.destroy();
         System.out.println("Process destroyed.");

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

Output

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

Creating Process...
Waiting...
Process destroyed.

Destroying a Calculator Process Example

The following example shows the usage of Process destroy() method. We've created a Process object for calculator executable. Then we've kept system to wait for 10 seconds and then using destroy() method, calculator process is killed and a message is printed.

package com.tutorialspoint;

public class ProcessDemo {

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

         // wait 10 seconds
         System.out.println("Waiting...");
         Thread.sleep(10000);

         // kill the process
         p.destroy();
         System.out.println("Process destroyed.");

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

Output

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

Creating Process...
Waiting...
Process destroyed.

Destroying Windows Explorer Process Example

The following example shows the usage of Process destroy() method. We've created a Process object for windows explorer executable. Then we've kept system to wait for 10 seconds and then using destroy() method, windows explorer process is killed and a message is printed.

package com.tutorialspoint;

public class ProcessDemo {

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

         // wait 10 seconds
         System.out.println("Waiting...");
         Thread.sleep(10000);

         // kill the process
         p.destroy();
         System.out.println("Process destroyed.");

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

Output

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

Creating Process...
Waiting...
Process destroyed.