也不复杂啊，定义三个函数，操作放在try-catch语句中，校验参数进行相应的处理。然后就是main测试函数传入异常所需的参数。参考：

 public class TestException {
    public static void testZero(int a,int b){
        try{
            System.out.println("a/b="+(a/b));
        }catch(Exception e){
            System.out.println(e.getLocalizedMessage());
        }
    }

    public static void testIndexOutofArray(int[] a){
        try{
            int len = a.length;
            System.out.println("a.index of leng+1"+(a[len]));
        }catch(Exception e){
            System.out.println(e.getLocalizedMessage());
        }
    }

    public static void testIllegalArgument(int day){
        try{
            if(day<0){
                throw new IllegalArgumentException("日期不能为负数.");
            }
        }catch(Exception e){
            System.out.println(e.getLocalizedMessage());
        }
    }

    public static void main(String[] args) {
        testZero(1,0);
        int [] array = {1,2};
        testIndexOutofArray(array);
        testIllegalArgument(-1);
    }

}