自定義異常throw，自定義throw

自定義異常throw，自定義throw

簡單自定義一個年齡小於等於0，或者大於120會出現的異常

首先繼承父類Exception，調用父類的構造器，這樣才可以報出自己想要的異常

public class AgeException extends Exception {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public AgeException(String message) {
        super(message);
    }

}

然後進行小小的測試

 1 package com.lianxi.zidingyichang;
 2 
 3 public class Test {
 4     private int age;
 5 
 6     public int getAge() {
 7         return age;
 8     }
 9 
10     public void setAge(int age) {
11         this.age = age;
12     }
13 
14     public void ageException(int age) throws AgeException {
15         if (age > 0 && age <= 120) {
16             this.age = age;
17             System.out.println("格式正確");
18         } else {
                //拋出自己自定義異常
19             AgeException exception = new AgeException("請輸入正確年齡");
20             throw exception;
21         }
22     }
23 
24     public static void main(String[] args) {
25         Test test = new Test();
26         try {
27             test.ageException(120);
28         } catch (AgeException e) {
29             // TODO Auto-generated catch block
30             e.printStackTrace();
31         }
32     }
33 
34 }