Write a program to accept the size and the elements to display in matrix form

import java.util.;
public class matrix {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("ENTER THE SIZE OF MATRIX");
int n = sc.nextInt();
System.out.println("ENTER "+ (nn) + " ELEMENTS : ");
int a[][] =new int[n][n];
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
a[i][j] = sc.nextInt();
}
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
{
System.out.print(a[i][j]+" \t");
}
System.out.println();
}
}
}