Java by API/java.lang/UncaughtExceptionHandler

implements UncaughtExceptionHandler

 
import java.util.ArrayList;
public class Main implements Runnable {
  static class OverrideExceptionHandler implements Thread.UncaughtExceptionHandler {
    public void uncaughtException(Thread t, Throwable e) {
      alertAdministrator(e);
    }
  }
  public static void alertAdministrator(Throwable e) {
    // Use Java Mail to send the administrator"s pager an email
    System.out.println("Adminstrator alert!");
    e.printStackTrace();
  }
  public static void main(String[] args) {
    Thread t = new Thread(new Main());
    t.setUncaughtExceptionHandler(new OverrideExceptionHandler());
    System.out.println(t.getUncaughtExceptionHandler());
    t.start();
  }
  public void run() {
    ArrayList al = new ArrayList();
    while (true) {
      al.add(new byte[1024]);
    }
  }
}