注意锁标记是自己不会自动释放，必须有通知

 1 package TomTexts;
 2 
 3 public class TomTexts_40 {
 4      public static void main(String args[])
 5      {
 6     try 
 7     {
 8     int i = args.length;
 9     System.out.println("i ="+i);
10     int j=5/i;
11     int k[]={ 1,2,3 };
12     k[5]=0;
13     }
14     catch(ArithmeticException e) 
15     {
16      System.out.println("被零除: " + e);
17     } 
18     catch(ArrayIndexOutOfBoundsException e) 
19     {
20      System.out.println("Array index out of bound exception: " + e);
21     }
22      System.out.println("执行catch块后的语句块");
23     }
24 
25 }