Java 异常处理

public static void main(String[] args) {


        for(int i=0;i<4;i++){
            int  k;
            
            switch(i){
                case 0:
        try{            
        int zero=0;
        k=911/zero;}
        catch (ArithmeticException e) {
            System.out.println("输入有误");
        }
        break;
                case 1:
        try{            
        int  b[]=null;
        k = b[0];}
        catch (NullPointerException e) {
            System.out.println("空指针异常");
        }
        break;
                case 2:
        try{            
        int c[]=new int[2];

        k=c[9];}
        catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("索引超出异常");
        }
        break;
                case 3:
        try{            
        char  ch="abc".charAt(99);}
        catch (Exception e) {
            System.out.println("收取字符超出");
            e.printStackTrace();
        }

        break;
            }
        }


    }

}