haveing troubles with a parsting cod

[Dumisan]

i'm reading some values from JTextFields and converting them to int like this

for (int i = 0; i < 9; i++) 
    for (int j = 0; j < 9; j++) 
               try {
                mat[i][j] = Integer.parseInt(c[i][j].getText());
               } catch (Exception e) {
                    mat[i][j] = 0;
                }

the declaration part:

public JTextField c[][] = new JTextField[9][];
public int mat[][] = new int[9][9];

basicly is ok but i'd like to print a message if someone puts string value on the textfield but the problem is that i want the parser to convert the empty string (when the user don;t put a value on) to 0 and if the user put a string value to get a error message

[collin389]

and the code you have now is...not working? if so, why? errors? what? Please be a little more specific.

[Dumisan]

it's working but here is the thing:
i have made a program to solve sudoku (ya i know there are planty of them on the internet but i have made the program for a school project and i used the constraint programing to solve it) and i decided to build an interface for it. this is the original cod when i didin;t check the values read from the interface. i decided to add a method that check the array to make sure it's a valid sudoku and if is not to print a message like "dude give the corect values" and stop the program form running it. it was easy to modify it and add the checks if the numbers are a sudoku the problem comes when someone enters a letter which is virtually ignored. and i want to print the same message with the incorect values for that case when someone enters a letter(or more of them )
i have tryed with an if but is ignored becous of the case :confused:

[masijade]

I have never heard of "parsting" any kind of fish, much less "cod". What is "parsting", anyway?

[JosAH]

I have never heard of "parsting" any kind of fish, much less "cod". What is "parsting", anyway?

Checking for synax errors?

kind regards,

Jos ;-)

[r035198x]

Checking for synax errors?

kind regards,

Jos ;-)

Don't be silly. Fish (especially cod) doesn't have syntax errors.
Sure you can use it to slap people now and again but checking syntax errors on fish is a waste of time.

[JosAH]

Don't be silly. Fish (especially cod) doesn't have syntax errors.
Sure you can use it to slap people now and again but checking syntax errors on fish is a waste of time.

Who is talking about syntax errors? Parsting checks for synax errors! :-P

kind regards,

Jos

[masijade]

Yeah! Maybe it has a synapse problem.

[r035198x]

Synax! You tricky little rascal ...

[Dumisan]

ok guys try to be helpfull it was a typo it's parseing not parsting somehow i misspelled the code too... :o

[masijade]

In the try block add a if check to check if the length of the trimmed string is 0 (getText will return an empty string if nothing is entered, not null). And, in the catch block, add a JOptionPane message. Where's the problem?

[Dumisan]

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.border.EmptyBorder;

public class sudoku extends JFrame {

    public JTextField c[][] = new JTextField[9][];
    JLabel message = new JLabel("                        ");
    JButton solve = new JButton("solve");
    JButton clear = new JButton("clear");
    JButton exit = new JButton("exit");
    public int mat[][] = new int[9][9];

    public sudoku() {
        this.setTitle("Sudoku");
        clear.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent evt) {
                clearAP(evt);
            }
        });
        exit.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent evt) {
                System.exit(0);
            }
        });
        solve.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent evt) {
                solveAP(evt);
            }
        });
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        solve.setSize(50, 50);
        clear.setSize(50, 50);
        exit.setSize(50, 50);
        JPanel panou_centru = new JPanel();
        JPanel panou_sud = new JPanel();
        JPanel panou_nord = new JPanel();
        Container panou = this.getContentPane();
        panou.setLayout(new BorderLayout(0, 10));
        panou_centru.setLayout(new GridLayout(9, 9));
        panou_centru.setLayout(new GridLayout(3, 3, 5, 5));
        panou_centru.setBorder(new EmptyBorder(3, 3, 3, 3));
        panou_centru.setBackground(Color.black);
        JPanel[][] innerPanels = new JPanel[3][3];
        for (int i = 0; i < innerPanels.length; i++) {
            for (int j = 0; j < innerPanels[i].length; j++) {
                innerPanels[i][j] = new JPanel(new GridLayout(3, 3, 2, 2));
                panou_centru.add(innerPanels[i][j]);
            }
        }
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
                c[i] = new JTextField[9];
            }
        }
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
                c[i][j] = new JTextField("", 3);
                innerPanels[i / 3][j / 3].add(c[i][j]);
            }
        }
        add("Center", panou_centru);
        panou_sud.setLayout(new FlowLayout());
        panou_sud.add(solve);
        panou_sud.add(clear);
        panou_sud.add(exit);
        add("South", panou_sud);
        panou_nord.add(message);
        add("North", panou_nord);
    }//constructor

    private void solveAP(ActionEvent evt) {
         for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
               try {
                mat[i][j] = Integer.parseInt(c[i][j].getText());
               } catch (Exception e) {
                    mat[i][j] = 0;
                }

            }
        }
        int n = 9;
        if (test()) {
           message.setText("solverd");
        } else {
            message.setText("please insert a valid sudoku grid");
        }
    }//solveAP

    private void clearAP(ActionEvent evt) {
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
                c[i][j].setText("");
            }
        }
        message.setText("                                ");
    }//clearAP

    private boolean test() {
        int n = 9;
        boolean ok = true;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                for (int k = j; k < n; k++) {
                    if (k != j) {
                        if (mat[i][j] != 0) {
                            if (mat[i][j] == mat[i][k]) {
                                ok = false;
                            }
                        }
                    }
                }
            }
        }
        for (int ci = 0; ci < n; ci += 3) {
            for (int cj = 0; cj < n; cj += 3) {
                for (int i = ci; i < ci + 3; i++) {
                    for (int j = cj; j < cj + 3; j++) {
                        for (int k = ci; k < ci + 3; k++) {
                            for (int l = cj; l < cj + 3; l++) {
                                if ((mat[i][j] != 0) & (mat[k][l] != 0)) {
                                    if (k != i || l != j) {
                                        if (mat[i][j] == mat[k][l]) {
                                            ok = false;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
        for (int j = 0; j < n; j++) {
            for (int i = 0; i < n; i++) {
                for (int k = 0; k < n; k++) {
                    if (k != i) {
                        if (mat[i][j] != 0) {
                            if (mat[i][j] == mat[k][j]) {
                                ok = false;
                            }
                        }
                    }
                }
            }
        }
        for(int i=0;i<n;i++)
            for(int j=0;j<n;j++)
                if(mat[i][j]>9 || mat[i][j]<0) ok = false;
        return ok;
    }

     public static void main(String[] args) {
        sudoku sdk = new sudoku();
        sdk.setSize(300,380);
        sdk.setVisible(true);

      }
}//class

here i cut the solver part it will just print a solve message, is just the interface complete with a letter and you will receive the solve message, when that happens I want to appear the error message

[masijade]

When I you what said understand you I answer will.

[Dumisan]

:o
put in the first textfield "a" then hit solve
it should gives the error message not the solve one this is the issue

[masijade]

I am not going to compile and execute that code, until you at least attempt to implement that that I suggested.

[Dumisan]

i have tried this before posting here but is not working

private void solveAP(ActionEvent evt) {
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {


                try {
                    if (c[i][j].toString().isEmpty()) {
                        mat[i][j] = 0;
                    } else {
                        mat[i][j] = Integer.parseInt(c[i][j].getText());
                    }
                } catch (Exception e) {
                    message.setText("please insert a valid sudoku grid");
                }

            }
        }
        int n = 9;
        if (test()) {
            message.setText("solverd");
        } else {
            message.setText("please insert a valid sudoku grid");
        }
    }

is like you suggested or at least this is what i sow into your post

[masijade]

Okay, so what exactly, does "not working" mean?

Exceptions? Compile messages? Difference between expected and actual results?

Whichever it is, provide the full info here.

[Dumisan]

i have tried this before posting here but is not working

private void solveAP(ActionEvent evt) {
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {


                try {
                    if (c[i][j].toString().isEmpty()) {
                        mat[i][j] = 0;
                    } else {
                        mat[i][j] = Integer.parseInt(c[i][j].getText());
                    }
                } catch (Exception e) {
                    message.setText("please insert a valid sudoku grid");
                }

            }
        }
        int n = 9;
        if (test()) {
            message.setText("solverd");
        } else {
            message.setText("please insert a valid sudoku grid");
        }
    }

is like you suggested or at least this is what i sow into your post

[masijade]

Okay, so what exactly, does "not working" mean?

Exceptions? Compile messages? Difference between expected and actual results?

Whichever it is, provide the full info here.

Okay, again.

[Dumisan]

sorry for the duplication

if complemented by a point shows the solved message this means is not working