1.异常(Error和Exception)

 1 package com.exception;
 2 
 3 public class Demo01 {
 4     public static void main(String[] args) {
 5 
 6     }
 7 
 8     //递归没有出口死循环  栈溢出错误java.lang.StackOverflowError,一般不要这么写
 9     public void a() {
10         b();
11     }
12 
13     public void b() {
14         a();
15     }
16 }

 1 package com.exception;
 2 
 3 public class Demo01 {
 4     public static void main(String[] args) {
 5 
 6         //java.lang.ArithmeticException:/ by zero
 7         System.out.println(11 / 0);
 8     }
 9 
10 }

1 package com.exception;
2 
3 public class Demo01 {
4     public static void main(String[] args) {
5         //Error: ;
6         System.out.println()
7     }
8 
9 }