jlab0701a2.java

计算机系学习java的专用ppt

import java.io.*;
public class JLab0701A2{
  public static void main(String[] args){
    for(int i=0;i<4;i++){
       int k;
       try{
            switch(i){
                       case 0:int zero=0;
                               k=911/zero;
                               break;
                       case 1:int b[]=null;
                               k=b[0];
                               break;
                       case 2:int c[]=new int[2];
                               k=c[9];
                               break;
                       case 3:char ch="abc".charAt(99);
                               break;
                        }
                }catch(NullPointerException e){
                       System.out.println("\nTestcase#"+i+"\n");
                       System.out.println(e);
                  }
                 }
               }        
            }