getDefaultUncaughtExceptionHandler() Method

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Description

The java.lang.Thread.getDefaultUncaughtExceptionHandler() method returns the default handler invoked when a thread abruptly terminates due to an uncaught exception. If the returned value is null, there is no default.

Declaration

Following is the declaration for java.lang.Thread.getDefaultUncaughtExceptionHandler() method

public static Thread.UncaughtExceptionHandler getDefaultUncaughtExceptionHandler()

Parameters

NA

Return Value

This method does not return any value.

Exception

NA

Example

The following example shows the usage of java.lang.Thread.getDefaultUncaughtExceptionHandler() method.

package com.tutorialspoint;

import java.lang.*;

public class ThreadDemo implements Runnable {

   Thread t;

   public ThreadDemo() {
   
      t = new Thread(this);
      
      // this will call run() function
      t.start();
   }

   public void run() {

      // prints thread name
      System.out.println("Thread = " + t.getName());

      /* returns the default handler invoked when a thread abruptly
         terminates due to an uncaught exception. */
      Thread.UncaughtExceptionHandler handler = Thread
         .getDefaultUncaughtExceptionHandler();
      System.out.println(handler);
   }

   public static void main(String[] args) {
      new ThreadDemo();
   }
}

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

Thread = Thread-0
null