自定义异常-Exception -2_exception返回去的-2-优快云博客

本文介绍了一个Java程序示例，该程序通过自定义异常来处理除法运算中的特殊情况，如被除数为负数和除数为零的情况，并展示了如何使用try-catch块捕获这些异常。

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package com;

import java.util.Scanner;

public class MyExceptionTest2 {

   public static void main(String[] args) {
       System.out.println("====除数运算====");
       System.out.println("请输入被除数");
       Scanner scan = new Scanner(System.in);
       int a = scan.nextInt();
       System.out.println("请输入除数");
       int b = scan.nextInt();
       try {
           double theResult = getResult(a,b);
           System.out.println(a+"/"+b+"= "+theResult);
       } catch (ChushufuException e) {
           e.printStackTrace();
           System.out.println(e.getMessage());
       } catch (ChushulingException e) {
           e.printStackTrace();
           System.out.println(e.getMessage());
       }
   }



   public static double getResult(int a,int b) throws ChushufuException, ChushulingException{
       if(a<0){
           throw new ChushufuException("被除数不能为负数");
       }

       if(b==0){
           throw new ChushulingException("除数不能为0");
       }

       return a/b;
   }

}
package com;

public class ChushufuException extends Exception {

    public ChushufuException(String msg){
        super(msg);
    }
}
package com;

public class ChushulingException extends Exception {

    public ChushulingException(String msg){
        super(msg);
    }
}