setDefaultUncaughtExceptionHandler() Thread method java

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

Thread setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) method in java

setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) method set the default handler invoked when a thread abruptly terminates due to an uncaught exception, and no other handler has been defined for that thread.

Syntax

public static void setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh)

Parameters

ueh the object to use as the default uncaught exception handler. If null then there is no default handler.

Throws

SecurityException – if a security manager is present and it denies RuntimePermission(“setDefaultUncaughtExceptionHandler”)

Example

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

Output:

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