PATTERN 16

import java.util.*;

class Pattern_16{

public static void main(String args[]){

Scanner sc= new Scanner(System.in);

System.out.println("Enter no of rows");

int n= sc.nextInt();

int r,c=0;

char ch='*';

for(r=1;r<=n;r++)

{

for(c=1;c<=n;c++)

{

if(r==1 || r==n || c==1 || c==n)                               System.out.print(ch);

else                                                                        System.out.print(" ");

}

System.out.println();

}

}}