Stuck with these methods

Hello everyone.
the reason of this post is that I am a bit stuck with this class where I need to implement two methods and it is not working so far.
The class in question is:
public class MyPuzzle
    public static final int GRIDSIZE = 5;
    private int[][] squares;
    private String[][] rowConstraints;
    private String[][] columnConstraints;
    public MyPuzzle()
        squares = new int[GRIDSIZE][GRIDSIZE];
        rowConstraints = new String[GRIDSIZE][GRIDSIZE - 1];
        columnConstraints = new String[GRIDSIZE][GRIDSIZE - 1];
        for (int row = 0; row < GRIDSIZE; row++) {
            for (int column = 0; column < GRIDSIZE - 1; column++) {
                rowConstraints[row][column] = " ";
        for (int column = 0; column < GRIDSIZE; column++) {
            for (int row = 0; row < GRIDSIZE - 1; row++) {
                columnConstraints[column][row] = " ";
    public void setSquare(int row, int column, int val)
        if ((1 <= val) && (val <= GRIDSIZE)) {
            squares[row][column] = val;
        else {
            System.out.println("Error - Illegal value " + val);
    public void setRowConstraint(int row, int col, String relation)
        if (relation.equals("<") || relation.equals(">")) {
            rowConstraints[row][col] = relation;
    public void setColumnConstraint(int col, int row, String relation)
        if (relation.equals("<") || relation.equals(">")) {
            columnConstraints[col][row] = relation;
    public void fillPuzzle()
       setColumnConstraint(0, 1, ">");
       setRowConstraint(4, 0, "<");
       setRowConstraint(4, 2, "<");
       setColumnConstraint(4, 3, "<");
       setColumnConstraint(4, 2, "<");
       setRowConstraint(3, 1, "<");
       setRowConstraint(1, 3, ">");
       setSquare(4, 0, 4);
    public void printPuzzle()
        for (int row = 0; row < GRIDSIZE - 1; row++) {
            drawRow(row);
            drawColumnConstraints(row);
        drawRow(GRIDSIZE - 1);
    private void printTopBottom()
        for (int col = 0; col < GRIDSIZE; col++) {
            System.out.print("---   ");
        System.out.println();
    private void drawColumnConstraints(int row)
        for (int col = 0; col < GRIDSIZE; col++) {
            String symbol = " ";
            if (columnConstraints[col][row].equals("<")) {
                symbol = "^";
            else if (columnConstraints[col][row].equals(">")) {
                symbol = "V";
            System.out.print(" " + symbol + "    ");
        System.out.println();
    private void drawRow(int row)
        printTopBottom();
        for (int col = 0; col < GRIDSIZE; col++) {
            String symbol;
            if (squares[row][col] > 0) {
                System.out.print("|" + squares[row][col] + "|");
            else {
                System.out.print("| |");
            if (col < GRIDSIZE - 1) {
                System.out.print(" " + rowConstraints[row][col] + " ");
        System.out.println();
        printTopBottom();
[/code]
The two methods I am trying to implement are:
-isLegal should return a boolean value that tells us whether the puzzle configuration is legal or not. That is, if there is a repeated value in any row or column, or if there is an incorrect value (the number 1024 for instance) anywhere, or if any of the constraints is violated isLegal should return false; otherwise it should return true.
-if the puzzle is not legal, getProblems should return a String describing all the things that are wrong with the configuration.
If anyone may help, I will be eternally gratefull.
Thanks.

Hello everyone.
the reason of this post is that I am a bit stuck with this class where I need to implement two methods and it is not working so far.
The class in question is:
public class MyPuzzle
public static final int GRIDSIZE = 5;
private int[][] squares;
private String[][] rowConstraints;
private String[][] columnConstraints;
public MyPuzzle()
squares = new int[GRIDSIZE][GRIDSIZE];
rowConstraints = new String[GRIDSIZE][GRIDSIZE - 1];
columnConstraints = new String[GRIDSIZE][GRIDSIZE - 1];
for (int row = 0; row < GRIDSIZE; row++) {
for (int column = 0; column < GRIDSIZE - 1; column++) {
rowConstraints[row][column] = " ";
for (int column = 0; column < GRIDSIZE; column++) {
for (int row = 0; row < GRIDSIZE - 1; row++) {
columnConstraints[column][row] = " ";
public void setSquare(int row, int column, int val)
if ((1 <= val) && (val <= GRIDSIZE)) {
squares[row][column] = val;
else {
System.out.println("Error - Illegal value " + val);
public void setRowConstraint(int row, int col, String relation)
if (relation.equals("<") || relation.equals(">")) {
rowConstraints[row][col] = relation;
public void setColumnConstraint(int col, int row, String relation)
if (relation.equals("<") || relation.equals(">")) {
columnConstraints[col][row] = relation;
public void fillPuzzle()
setColumnConstraint(0, 1, ">");
setRowConstraint(4, 0, "<");
setRowConstraint(4, 2, "<");
setColumnConstraint(4, 3, "<");
setColumnConstraint(4, 2, "<");
setRowConstraint(3, 1, "<");
setRowConstraint(1, 3, ">");
setSquare(4, 0, 4);
public void printPuzzle()
for (int row = 0; row < GRIDSIZE - 1; row++) {
drawRow(row);
drawColumnConstraints(row);
drawRow(GRIDSIZE - 1);
private void printTopBottom()
for (int col = 0; col < GRIDSIZE; col++) {
System.out.print("--- ");
System.out.println();
private void drawColumnConstraints(int row)
for (int col = 0; col < GRIDSIZE; col++) {
String symbol = " ";
if (columnConstraints[col][row].equals("<")) {
symbol = "^";
else if (columnConstraints[col][row].equals(">")) {
symbol = "V";
System.out.print(" " + symbol + " ");
System.out.println();
private void drawRow(int row)
printTopBottom();
for (int col = 0; col < GRIDSIZE; col++) {
String symbol;
if (squares[row][col] > 0) {
System.out.print("|" + squares[row][col] + "|");
else {
System.out.print("| |");
if (col < GRIDSIZE - 1) {
System.out.print(" " + rowConstraints[row][col] + " ");
System.out.println();
printTopBottom();
}The two methods I am trying to implement are:
-isLegal should return a boolean value that tells us whether the puzzle configuration is legal or not. That is, if there is a repeated value in any row or column, or if there is an incorrect value (the number 1024 for instance) anywhere, or if any of the constraints is violated isLegal should return false; otherwise it should return true.
-if the puzzle is not legal, getProblems should return a String describing all the things that are wrong with the configuration.
If anyone may help, I will be eternally gratefull.
Thanks.

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