Rectanglehollowpattern.java

import java.util.*;
public class Rectanglehollowpattern{
    public static void main(String [] args){
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter your number: " );
        int n = sc.nextInt();
        for(int i = 1; i<=n; i++){
            for(int j=1;j<=n;j++){
                if(i==1||j==1||j==n||i==n){
                    System.out.print("*");
                }
                else{
                    System.out.println(" ");
                }
            }
        }
        System.out.println("");


    }
}