A:异常处理的两种方式
* a:try…catch…finally
* try catch
* try catch finally
* try finally
* b:throws
* B:try...catch处理异常的基本格式
* try…catch…finally
* C:案例演示
* try...catch的方式处理1个异常
- package com.heima.exception;
-
- public class Demo2_Exception {
-
- /**
- try:用来检测异常的
- catch:用来捕获异常的
- finally:释放资源
-
- 当通过trycatch将问题处理了,程序会继续执行
- */
- public static void main(String[] args) {
- Demo2 d = new Demo2();
- try{
- int x = d.div(10, 0);
- System.out.println(x);
- }catch(ArithmeticException a) { //ArithmeticException a = new ArithmeticException();
- System.out.println("出错了,除数为零了");
- }
-
- System.out.println("1111111111111111");
- }
-
- }
-
- class Demo2 {
- /*
- * 除法运算
- */
- public int div(int a,int b) { //a = 10,b = 0
- return a / b; // 10 / 0 被除数是10,除数是0当除数是0的时候违背了算数运算法则,抛出异常
- //new ArithmeticException("/ by zero");
- }
- }
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