自定义异常

自定义异常类应该包含2个构造器：一个默认构造器，一个带有详细信息的构造器

自定义异常类：

package com.yqq.app11;

/**
* @Author yqq
* @Date 2021/11/21 21:32
* @Version 1.0
*/
public class IllegalAgeException extends Exception{
//默认构造器
public IllegalAgeException(){
}
//带有详细信息的构造器，信息存储在message中
public IllegalAgeException(String message){
super(message);
}
}

测试类：

package com.yqq.app11;
import lombok.Getter;
import lombok.ToString;

/**
* @Author yqq
* @Date 2021/11/21 21:39
* @Version 1.0
*/
public class TestMyException {
public static void main(String[] args) throws IllegalAgeException {
Cat cat = new Cat();
cat.setId(1);
cat.setAge(-100);
cat.setName("小猫咪");
System.out.println(cat);
}
}
@Getter
@ToString
class Cat{
private int id;
private String name;
private int age;

public void setId(int id) {
this.id = id;
}

public void setName(String name) {
this.name = name;
}

public void setAge(int age) throws IllegalAgeException {
if (age < 0 || age > 150)
throw new IllegalAgeException("动物的年龄不合法。。。。。");
this.age = age;
}
}Exception in thread "main" com.yqq.app11.IllegalAgeException: 动物的年龄不合法。。。。。
at com.yqq.app11.Cat.setAge(TestMyException.java:39)
at com.yqq.app11.TestMyException.main(TestMyException.java:17)