### try catch 捕获处理异常 try{} catch(Exception e){} finally{} ``` package com.xiaohu.entity; import java.util.Scanner; public class Test1 { public static void main(String[] args) { Scanner sa = new Scanner(System.in); int n1 = sa.nextInt(); int n2 = sa.nextInt(); try { int res = n1/n2; System.out.println("res:"+res); }catch(Exception e) { System.out.println(e); }finally { System.out.println("不管怎样都会执行"); } } } ``` ### 抛出异常 throws Exception ``` package com.xiaohu.entity; public class Test2 { public int getRes(int x, int y) throws Exception { int t = 0; t = x/y; return t; } public int getM(int a, int b){ int t = 0; try { t = 100+getRes(a,b); }catch(Exception e){ System.out.println("error!"); } return t; } public static void main(String[] args) { Test2 t = new Test2(); int res = t.getM(10, 1); System.out.println(res); } } ``` ### 异常执行顺序 先子类 后父类 Exception 在最后 ``` package com.xiaohu.test; import java.util.InputMismatchException; import java.util.Scanner; public class Test5 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); try { System.out.println("请输入第一个数"); int num1 = sc.nextInt(); System.out.println("请输入第二个数"); int num2 = sc.nextInt(); try { int res = num1/num2; System.out.println("res:"+res); }catch(ArithmeticException e) { System.out.println("除数为零！error"); } }catch(InputMismatchException e) { System.out.println("您输入的值不是数值类型"); } } } ``` ``` package com.xiaohu.test; public class Test1 { public static void main(String[] args) { int[] x = {1,2,3,4,5,6}; int len = x.length; try { int y = x[x.length]; System.out.println(y); }catch(ArrayIndexOutOfBoundsException e) { System.out.println(e); } } } ``` 最后修改：2024 年 10 月 21 日 © 允许规范转载 打赏 赞赏作者 支付宝微信 赞 如果觉得我的文章对你有用，请随意赞赏
