java 自定义异常类并且捕获异常输出信息

package com.hidata.devops.paas.demo;
import java.util.Scanner;
/**
 * 任务4、自定义异常 输出
 */
public class MyException extends Exception{
    public MyException(String message) {
        super(message);
    }
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入任意一个字符串：");
        String str = scanner.next();
        try {
            if(str.length() > 5){
                throw new MyException("The string is too long");
            }
        }catch (MyException e){
            System.out.println(e.getMessage());
        }
    }
}

请输入任意一个字符串：
214124123
The string is too long
Process finished with exit code 0