Java Program to check the Year is Leap Year or not

import java.io.*;
import java.util.*;
public class Year{
    Scanner scan=new Scanner(System.in);
    int year;
    public void input()throws IOException{
        System.out.println("Enter any Year: ");
        year=scan.nextInt();
        if(year<4){
            do{
                for(int i=1; ; i++){
                    System.out.println("Re-enter the year and it should be >3: ");
                    year=scan.nextInt();
                }
            }
            while(year<4);
        }
    }

    public void compute(){
        if(year%4==0)
            System.out.println("Year "+year+" is Leap Year.");
        else
            System.out.println("Year: "+year+" is not Leap Year.");
    }

    public static void main(String[] args)throws IOException{
        Year obj=new Year();
        obj.input();
        obj.compute();
    }
}