GridLayout Removing Padding between JPanels
arrays, java, jpanel, margin, swing
Solution
A few notes:
Give each panel a `GridLayout`.
Use the array length for loop limits.
Re-factor constants when possible.
Code:
import java.awt.GridLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class MapArray {
private static final int SIZE = 4;
private static final JPanel[][] tiles = new JPanel[SIZE][SIZE];
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame();
frame.setLayout(new GridLayout(SIZE, SIZE));
for (int i = 0; i < tiles.length; i++) {
for (int j = 0; j < tiles[0].length; j++) {
tiles[i][j] = new JPanel(new GridLayout());
tiles[i][j].add(new JLabel(
new ImageIcon("image.gif")));
frame.add(tiles[i][j]);
}
}
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
});
}
}
Problem
I'm working on a Computer Science project, and I haven't been able to find any solution to my problem. I'm creating a 2D array of `JPanel`s containing images through a `GridLayout`. I want to remove the padding/margins between all the panels so that it flows seemlessly into a single image. However, the setHGap and setVGap methods don't seem to help me. I'd appreciate any response. Thank you. ``` import java.awt.GridLayout; import java.util.Map; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; public class MapArray { static JPanel[][] tiles = new JPanel[11][11]; public MapArray() { } protected static ImageIcon createImageIcon(String path) { java.net.URL imgURL = Map.class.getResource(path); if (imgURL != null) { return new ImageIcon(imgURL); } else { System.err.println("Couldn't find file: " + path); return null; } } public static void main(String[] args) { javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { JFrame frame = new JFrame(); frame.setSize(325, 300); GridLayout layout = new GridLayout(10, 10); frame.setLayout(layout); for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { tiles[i][j] = new JPanel(); tiles[i][j].add(new JLabel( createImageIcon("tile-1.png"))); frame.add(tiles[i][j]); } } frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); frame.validate(); frame.repaint(); } }); } } ```