Thread: problem of creating matrix with JButton or Panel

Hi java programmers!

I got a run time problem with my code in below


import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import javax.swing.JButton;
import javax.swing.JFrame;

public class Aline extends JFrame {
JFrame window = new JFrame("");
JButton[][] butonlar;

public Aline() {
window.setSize(600, 600);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLO SE);
window.setLayout(new GridLayout(3, 3));
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();

// Determine the new location of the window
int w = window.getSize().width;
int h = window.getSize().height;
int x = (dim.width - w) / 2;
int y = (dim.height - h) / 2;
window.setLocation(x, y);
butonlar= new JButton[5][5];

// for (int i = 1; i <= 5; i++) {
// for (int j = 1; j <= 5; j++) {
// butonlar[i][j]=new JButton();
// }
//
// }

// for (int i = 1; i <= 5; i++) {
// for (int j = 1; j <= 5; j++) {
// window.add(butonlar[i][j]);
// }
//
// }
// window.add(butonlar[5][5]);
window.setVisible(true);
}

public static void main(String args[]) {
new Aline();
}

}


as you can see, I tried to write different ways but i couldnt run it. And i ignored these lines and tried different way but again it did not work

Error message is java.lang.ArrayIndexOutOfBoundsException: 5

just i want to create a matrix with jbutton or panel and i ll use it to define my path on this matrix. But i m still getting error in first step of my program and i couldnt continue to complete

thanks yes i wasnt aware of that
thank you very much but still it doesnt run. My codes now like that:



import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Astar extends JFrame {
JFrame window = new JFrame("GG");
JButton[][] butonlar=new JButton[5][5];


public Astar() {
window.setSize(600, 600);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLO SE);
window.setLayout(new GridLayout(5, 5));
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();

// Determine the new location of the window
int w = window.getSize().width;
int h = window.getSize().height;
int x = (dim.width - w) / 2;
int y = (dim.height - h) / 2;
window.setLocation(x, y);
butonlar= new JButton[5][5];

for (int i = 0; i < 5; i++) {
for (int j = 0; j < 5; j++) {
window.add(butonlar[i][j]);
}

}
window.add(butonlar[5][5]);
window.setVisible(true);
}

public static void main(String args[]) {
new Astar();
}

}


what is problem now?

ovv it is ok! now i made it.

PRoblem was solved
it is needed to define every button in for loop like that

for (int i = 0; i < 5; i++) {

// butonlar[i]=new JButton[5];
for (int j = 0; j < 5; j++) {
butonlar[i][j]=new JButton();
}

}

for (int i = 0; i < 5; i++) {
for (int j = 0; j < 5; j++) {
window.add(butonlar[i][j]);
}

}

thanks again for your best java guide web side!