Coders Wanted! Prime Numbers nxn table Help!!!?

How can I output a nxn table for my prime numbers program??

I got it to compile and run fine without the table but now the next step is to get the table to print. I tried and experiment so long that now I really need help. DO NOT OFFER ME FAKE OR SPAM SITES. I hate it when users try to get away with it and earn pts. Anyways that's my only rule against answering this question. Thanks to those who offer me the appropriate code help.

See code:

import java.util.*;

public class IsPrime {

public static Scanner scanner = new Scanner(System.in);

.

public static int readInt() {

System.out.print("Enter an integer: ");

while (!scanner.hasNextInt()) {

scanner.next();

System.out.print("That was not an integer. Please

try again: ");

}

return scanner.nextInt();

}

public static boolean isPrime(int n) {

if (n < 2) return false;

if (n % 2 == 0)

return (n == 2);

for (int i=3; i*i<=n; i+=2)

if (n % i == 0)

return true;

}

public static void main(String[] args) {

System.out.println("Prime Numbers\n");

int n = readInt();

if (isPrime(n))

System.out.printf("%d is a prime.\n",n);

else

System.out.printf("%d is not a prime.\n",n);

//THE PART I NEED HELP IN.

for (int i = 0; i < n; i++) {

for (int j = 0; j < n; j++)

System.out.printf("%4d",i%j);

System.out.println();

}

}

}