Java Swing How to - Leave space between GridLayout

Question

We would like to know how to leave space between GridLayout.

Answer

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.GridLayout;
/*www .j a  v a2  s.  co m*/
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

public class Main {
  public static Component getButtonLayout(int num) {
    JPanel p = new JPanel(new BorderLayout(3, 3));

    p.add(new JLabel("Label " + num), BorderLayout.NORTH);

    JPanel b = new JPanel(new GridLayout(1, 0, 25, 5));
    for (int ii = 1; ii < 4; ii++) {
      b.add(new JButton("Button " + ii));
    }
    p.add(b, BorderLayout.CENTER);

    return p;
  }

  public static void main(String[] args) {
    JPanel gui = new JPanel(new GridLayout(0, 1, 3, 15));
    for (int ii = 1; ii < 4; ii++) {
      gui.add(getButtonLayout(ii));
    }
    JOptionPane.showMessageDialog(null, gui);
  }
}