setUncaughtExceptionHandler() Thread method in java

Let’s learn thread setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) method in java.

Thread setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) method in java

setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) method set the handler invoked when this thread abruptly terminates due to an uncaught exception.

Syntax

public void setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh)

Parameters

ueh the object to use as this thread’s uncaught exception handler. If null then this thread has no explicit handler.

Throws

SecurityException – if the current thread is not allowed to modify this thread.

Example

class SetUncaughtExceptionHandlerDemo 
{
   public static void main(String[] args) 
   {
      Thread t = new Thread(new newThread1());
      t.setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
         public void uncaughtException(Thread t, Throwable e) {
            System.out.println(t + " exception thrown : " + e);
         }
      });
      t.start();
   }
}
class newThread1 implements Runnable 
{
   public void run() 
   {
      throw new RuntimeException();
   }
}

Output:

Thread[#21,Thread-0,5,main] exception thrown : java.lang.RuntimeException