五种常见异常

1、NullPointerException 空指针

2、ClassNotFoundException 指定类不存在

3、ArithmeticException运算异常

4、ArrayIndexOutOfBoundsException数组下标越界

5、IllegalArgumentException方法的参数错误

6、IllegalAccessException 没有访问权限

小例子

import java.util.Scanner;public class Exception {          int shang;     public Exception(int  chushu,int  beichushu){    	     	 shang=chushu/beichushu;     }     public static void main(String[] args) {    	 try {    		 Scanner sc=new Scanner(System.in);			String chushu=sc.nextLine();			String beichushu=sc.nextLine();			int a =Integer.parseInt(chushu);			int b =Integer.parseInt(beichushu);						Exception exception =new Exception(a, b);			System.out.println(exception.shang);		} catch (NumberFormatException e) {			System.out.println("NumberFormatException");			e.printStackTrace();			// TODO: handle exception		}    	 catch (ArithmeticException e) {    		 System.out.println("ArithmeticException"); 			// TODO: handle exception    		 e.printStackTrace(); 		}finally {			System.out.println("666");		}	}}