简单自定义一个年龄小于等于0,或者大于120会出现的异常
首先继承父类Exception,调用父类的构造器,这样才可以报出自己想要的异常
public class AgeException extends Exception { /** * */ private static final long serialVersionUID = 1L; public AgeException(String message) { super(message); }}
然后进行小小的测试
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("格式正确");18 } else {
//抛出自己自定义异常19 AgeException exception = new AgeException("请输入正确年龄");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 block30 e.printStackTrace();31 }32 }33 34 }
原标题:自定义异常throw
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