Untitled

import java.util.Scanner;

public class Matrices {
    public static void main(String[] args) {
        int matrix[][] = new int[3][3];
        int n = matrix.length, m = matrix[0].length;

        Scanner sc = new Scanner(System.in);
        for (int i=0; i<n; i++) {
            for (int j=0; j<m; j++) {
                matrix[i][j] = sc.nextInt();
            }
        }

        for (int i=0; i<n; i++) {
            for (int j=0; j<m; j++) {
                System.out.print(matrix[i][j] + " ");
            }
            System.out.println();
        }

        sc.close();
    }
}