Java中的异常处理(三) - 自定义异常处理

1.异常处理类

package second;



public class MyException extends Exception {



    MyException (){

        

    }

    MyException (String ErrorMsg){

        super(ErrorMsg);

    }

    public void check(){

        System.out.println("都报错了，还处理个毛线！");

    }

}

2.程序

package second;



public class ScoreCount {

    public static void main(String[] args){

        String end = "";

        try{

            end = score(1000);

        }catch(MyException e){

            e.check();

        }

        System.out.println(end);

    }

    /* 可能会爆出异常的方法 */

    static String score(int score) throws MyException {

        if(score <= 50){

            return "不及格!";

        }else if(score <= 80){

            return "优良!";

        }else if(score <= 100){

            return "好评!";

        }

        throw new MyException();

    }

}