自定义异常及经验小结

 

 

 

 

package com.Demo2;
//自定义异常类
public class MyException extends Exception {
    //传递数字>10
    private int detail;

    public MyException(int a) {
        this.detail = a;
    }

    //toString异常的打印信息 alt+insert-->toString
    @Override
    public String toString() {
        return "MyException{" +
                "detail=" + detail +
                '}';
    }
}
====================================================

package com.Demo2;

public class Test {

    //可能会存在异常的方法
    static void test(int a) throws MyException {
        System.out.println("传递的参数为"+a);
        if (a>10){
            throw new MyException(a); //抛出
                            }
        System.out.println("OK");
    }

    public static void main(String[] args) {
        try {
            test(11);
        } catch (MyException e) {
            System.out.println("MyException=>"+e);
        }
    }

}
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