Sudoku.java

package com.ssaurel.sudoku;
public class Sudoku {

    // we define a simple grid to solve. Grid is stored in a 2D Array
    public static int[][] GRID_TO_SOLVE = {
            {9, 0, 0, 1, 0, 0, 0, 0, 5},
            {0, 0, 5, 0, 9, 0, 2, 0, 1},
            {8, 0, 0, 0, 4, 0, 0, 0, 0},
            {0, 0, 0, 0, 8, 0, 0, 0, 0},
            {0, 0, 0, 7, 0, 0, 0, 0, 0},
            {0, 0, 0, 0, 2, 6, 0, 0, 9},
            {2, 0, 0, 3, 0, 0, 0, 0, 6},
            {0, 0, 0, 2, 0, 0, 9, 0, 0},
            {0, 0, 1, 9, 0, 4, 5, 7, 0},
    };

    private int[][] board;
    public static final int EMPTY = 0; // empty cell
    public static final int SIZE = 9; // size of our Sudoku.java grids

    public Sudoku(int[][] board) {
        this.board = new int[SIZE][SIZE];

        for (int i = 0; i < SIZE; i++) {
            for (int j = 0; j < SIZE; j++) {
                this.board[i][j] = board[i][j];
            }
        }
    }
    public void display() {
        for (int i = 0; i < SIZE; i++) {
            for (int j = 0; j < SIZE; j++) {
                System.out.print(" " + board[i][j]);
            }

            System.out.println();
        }

        System.out.println();
    }

    public static void main(String[] args) {
        Sudoku sudoku = new Sudoku(GRID_TO_SOLVE);
        System.out.println("Sudoku.java grid to solve");
        sudoku.display();

    }

}