1 // Copyright 2006 The Android Open Source Project 2 3 /** 4 * Test the uncaught exception handler. 5 */ 6 public class Main { main(String[] args)7 public static void main(String[] args) { 8 testThread(1); 9 testThread(2); 10 testThread(3); 11 12 catchTheUncaught(1); 13 } 14 testThread(int which)15 private static void testThread(int which) { 16 Thread t = new Helper(which); 17 t.start(); 18 19 try { 20 t.join(); 21 } catch (InterruptedException ex) { 22 ex.printStackTrace(); 23 } 24 } 25 catchTheUncaught(int which)26 static void catchTheUncaught(int which) { 27 ThreadDeathHandler defHandler = new ThreadDeathHandler("DEFAULT"); 28 ThreadDeathHandler threadHandler = new ThreadDeathHandler("THREAD"); 29 30 System.out.println("Test " + which); 31 switch (which) { 32 case 1: { 33 Thread.setDefaultUncaughtExceptionHandler(defHandler); 34 break; 35 } 36 case 2: { 37 Thread.currentThread().setUncaughtExceptionHandler( 38 threadHandler); 39 break; 40 } 41 case 3: { 42 Thread.setDefaultUncaughtExceptionHandler(defHandler); 43 Thread.currentThread().setUncaughtExceptionHandler( 44 threadHandler); 45 break; 46 } 47 } 48 49 throw new NullPointerException("Hi diddly-ho, neighborino."); 50 } 51 52 private static class Helper extends Thread { 53 private int which; 54 Helper(int which)55 public Helper(int which) { 56 this.which = which; 57 } 58 run()59 public void run() { 60 catchTheUncaught(which); 61 } 62 } 63 } 64