异常02异常的抛出异常

package com.oop.exception;

public class Test {
    public static void main(String[] args) {
        try {
            new Test().test(1,0);
        } catch (ArithmeticException e) {
            e.printStackTrace();
        }


        //finally 可以不要finally， 假设IO，资源，关闭！
    }
    //假设这方法中，处理不了这个异常。方法上抛出异常
    public void test(int a,int b) throws ArithmeticException{
        if (b==0){//主动抛出异常 throw throws
            throw new ArithmeticException();//主动抛出异常,一般在方法中使用
        }
        System.out.println(a/b);
    }
}

/*
//假设要捕获多个异常：从小到大

        try {//try监控异常
            if (b==0){//主动抛出异常 throw throws
                throw new ArithmeticException();//主动抛出异常
            }
            System.out.println(a/b);
        }catch (Error e){//catch捕获异常
            System.out.println("程序出现异常，变量b不能为0");
        }catch (Exception e){
            System.out.println("Exception");

        }catch (Throwable e){
            System.out.println("Throwable");
        }finally {//处理善后工作
            System.out.println("finally");
        }
 */

package com.oop.exception;

public class Test2 {
    public static void main(String[] args) {
        int a = 1;
        int b = 0;

        //ctrl + alt + t
        try {
            System.out.println(a/b);
        } catch (Exception e) {
            System.exit(0);
            e.printStackTrace();//打印错误的栈信息
        } finally {
        }
    }
}