Java 异常整合练习

 1 package com.bytezero.throwable2;
 2
 3 /**
 4  *
 5  * @Description   异常练习
 6  * @author Bytezero·zhenglei!        Email:420498246@qq.com
 7  * @version
 8  * @date 上午9:01:38
 9  * @
10  *
11  */
12 public class EcmDef {
13     public static void main(String[] args) {
14
15         try {
16                 int i= Integer.parseInt(args[0]);
17                 int j= Integer.parseInt(args[1]);
18
19                 int result =ecm(i,j);
20
21                 System.out.println(result);
22
23         }catch(NumberFormatException e) {
24             System.out.println("数据类型不一致");
25
26         }catch(ArrayIndexOutOfBoundsException e) {
27             System.out.println("缺少命令行参数");
28         }catch(ArithmeticException e) {
29             System.out.println("除0");
30         }catch(EcDef e) {
31             System.out.println(e.getMessage());
32
33         }
34
35     }
36
37     public  static int ecm(int i ,int j) throws EcDef {
38         if(i <0 || j<0) {
39
40             throw new EcDef("分子或分母为负数");
41         }
42         return i/j;
43     }
44 }

 1 package com.bytezero.throwable2;
 2
 3 //自定义异常类
 4 public class EcDef extends Exception {
 5
 6     static final long serialVersionUID = -3387516124229948L;
 7
 8     public EcDef() {
 9
10     }
11     public EcDef(String msg) {
12
13         super(msg);
14     }
15
16 }