Java自定义异常的用法

 package day162020072701.day1601;

 /**
  * @author liuwenlong
  * @create 2020-07-27 09:25:44
  */
 @SuppressWarnings("all")
 public class Human {
     private String name;
     private char sex;
     private int age;

     public int getAge() {
         return age;
     }

     public void setAge(int age) throws HumanException.AgeException {
         if (age > 0 && age < 150) {
             this.age = age;
             return;
         }
         throw new HumanException.AgeException("年龄非法");

     }

     public String getName() {
         return name;
     }

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

     public char getSex() {
         return sex;
     }

     public void setSex(char sex) throws HumanException.SexException {
         if (sex == '男' || sex == '女') {
             this.sex = sex;
             return;
         }
         throw new HumanException.SexException("性别有误");
     }

     @Override
     public String toString() {
         return "Human{" +
                 "name='" + name + '\'' +
                 ", sex=" + sex +
                 ", age=" + age +
                 '}';
     }
 }

 package day162020072701.day1601;

 /**
  * @author liuwenlong
  * @create 2020-07-27 10:47:58
  */
 @SuppressWarnings("all")
 public class HumanException  {
     public static class  AgeException extends Exception{
         private String message;

         public AgeException(String message) {
             this.message = message;
         }

         @Override
         public String getMessage() {
             return message;
         }
     }

     public static class  SexException extends Exception{
         private String message;

         public SexException(String message) {
             this.message = message;
         }

         @Override
         public String getMessage() {
             return message;
         }
     }
 }

 package day162020072701.day1601;

 import java.util.Scanner;

 /**
  * @author liuwenlong
  * @create 2020-07-27 09:29:24
  */
 @SuppressWarnings("all")
 public class TestHuman {
     public static void main(String[] args) {
         Scanner input = new Scanner(System.in);

         Human human = new Human();
         human.setName("张三");
         System.out.println("姓名：" + human.getName());

         boolean flag = false;
         while (!flag) {
             flag = true;
             try {
                 System.out.println("请输入性别：");
                 human.setSex(input.next().charAt(0));
                 System.out.println("性别：" + human.getSex());
                 System.out.println("请输入年龄：");
                 human.setAge(input.nextInt());
                 System.out.println("年龄：" + human.getAge());
             } catch (HumanException.SexException e) {
                 flag = false;
                 System.out.println(e.getMessage());
             } catch (HumanException.AgeException e) {
                 System.out.println(e.getMessage());
                 flag = false;
             } catch (Exception e) {
                 System.out.println("出现未知错误！Error!");
                 flag = false;
             } finally {
                 System.out.println("异常首尾");
             }
         }
         System.out.println(human);
     }
 }