判断错误返回数据

/*判断j为零时和不为零时判断，返回错误类型
package test;

import java.util.Scanner;

import javax.swing.JOptionPane;

public class Secetion {
    public static void main( String args[] )
    {
    int i=100;
    int j=0;
    int c;
    Scanner sc=new Scanner(System.in);
    System.out.println("请输入一个数字");
    j=sc.nextInt();
    c=i/j;
    try
    {
        
        c = i/j;    // Causes division-by-zero exception
        throw new Exception("Hello.Exception!");
    }
    
    catch ( ArithmeticException e)
    {
        System.out.println("被0除."+ e.getMessage());
    }
    
    catch (Exception e)
    {
        if (e instanceof ArithmeticException)
            System.out.println("被0除");
        else
        {  
            System.out.println(e.getMessage());
            
        }
    }