Thread.getUncaughtExceptionHandler() Method

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Description

The java.lang.Thread.getUncaughtExceptionHandler() method returns the handler invoked when this thread abruptly terminates due to an uncaught exception.

Declaration

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

public Thread.UncaughtExceptionHandler getUncaughtExceptionHandler()

Parameters

NA

Return Value

This method does not return any value.

Exception

NA

Example

The following example shows the usage of java.lang.Thread.getUncaughtExceptionHandler() 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 handler invoked when this thread abruptly 
         terminates due to an uncaught exception. */
      Thread.UncaughtExceptionHandler handler = 
      t.getUncaughtExceptionHandler();
      System.out.println(handler);
   }

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

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

Thread = Thread-0
java.lang.ThreadGroup[name=main,maxpri=10]
Thread = Thread-1
java.lang.ThreadGroup[name=main,maxpri=10]