Java AWT GridLayout add gap between components

Introduction

To create a GridLayout of three rows with a horizontal gap of 10 pixels and a vertical gap of 20 pixels between cells 

GridLayout gridLayout = new GridLayout(3, 0, 10, 20);

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;

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

public class Main {
  public static void main(String[] args) {
    JFrame frame = new JFrame("GridLayout Test");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    JPanel buttonPanel = new JPanel();
    buttonPanel.setLayout(new GridLayout(2,2,20,20));

    for (int i = 1; i <= 4; i++) {
      buttonPanel.add(new JButton("Button " + i));
    }//from w w w.  j av  a  2  s .  c  om

    contentPane.add(buttonPanel, BorderLayout.CENTER);
    frame.pack();
    frame.setVisible(true);
  }
}



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