Java Swing GridLayout

GridLayout places components in a cell of a grid. Each cell has the same size, therefore, each component takes up the same space in a container. When the user adjusts the container, the size of each component changes accordingly.

Here are the constructors of the GridLayout class:

Constructors	Description
public GridLayout(int rows, int cols)	Creates a grid layout with a given number of rows and columns. If cols or rows is zero, any numbers of components can be placed in a column or in a row.
public GridLayout(int rows, int cols, int hgap, int vgap)	Creates a grid layout with a given number of rows and columns. Beside this, you can initialize the vertical and horizontal gap between each of rows and columns.

Here is the screenshot of GridLayout demo application.

package gridlayoutdemo;

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

public class Main {
    public static void main(String[] args) {

        JFrame frame = new JFrame("GridLayout Demo");
        JButton btn1 = new JButton("Button 1");
        JButton btn2 = new JButton("Button 2");
        JButton btn3 = new JButton("Button 3");
        JButton btn4 = new JButton("Button 4");
        JButton btn5 = new JButton("Button 5");
        // create grid layout with 3 rows , 2 columns with horizontal
        // and vertical gap set to 10
        JPanel panel = new JPanel(new GridLayout(3,2,10,10));
        // add buttons to the panel
        panel.add(btn1);
        panel.add(btn2);
        panel.add(btn3);
        panel.add(btn4);
        panel.add(btn5);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300,150);
        frame.getContentPane().add(panel);
        frame.setVisible(true);
    }
}
Code language: JavaScript (javascript)