My code does not show images from frame

Question

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;




public class Concentration extends JFrame implements ActionListener {

    private JButton buttons[][]=new JButton[4][4];
    int i,j,n;

    public Concentration() {

        super ("Concentration");    
        JFrame frame=new JFrame();
        setSize(10000,10000);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel=new JPanel(new GridLayout(4,4));
        panel.setSize(4000, 4000);

        for( i=0; i<buttons.length; i++){
            for (j=0; j<buttons[i].length;j++){ 
                n=i*buttons.length+buttons[i].length;
                buttons[i][j]=new JButton(new ImageIcon("1.jpg"));

                panel.add(buttons[i][j]);

            }
        }
        add(panel);
        pack();
        setVisible(true);

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

}

I put the images in images folder in package folder but it doesnot show. What am i doing wrong?

I will make a memory game but still cant do anything. And should i use label instead of icon to show picture? Or jtogglebutton or jbutton?

Answer 1

If the image is internal (you want a location relative to your project, or perhaps packaged into your jar) :

new ImageIcon(getClass().getResource("/images/1.jpg"));

The path is relative, so path/ will be a folder in the same folder as your project (or packaged into your jar).

If you want an external image, simply hand ImageIcon constructor the path (ex. "C:/.../file.png"). This isn't recommended though, as it's better to use it as a resource.

For more info on the ImageIcon constructor, see here. for more info on loading class resources, see here (Javadoc links)