How to get input a single matrix from user in java by jayanthi ganesh

import java.util.*;

public class MatrixInputFromUser {
public static void main(String[] args) {
int m,n;
Scanner sc = new Scanner(System.in);
m=sc.nextInt();
n=sc.nextInt();
int a[][] = new int[m][n];
for (int i=0; i<m; i++) {
for (int j=0; j<n; j++) {
a[i][j]=sc.nextInt();
}
}
for (int i=0; i<m; i++) {
for (int j=0; j<n; j++) {
System.out.print(a[i][j] + " ");
}
System.out.println();
}
}
}