GRIDBAGLAYOUT
GridBagLayout. GridBagLayout is a layout manager that lays out a container’s components in a grid
of cells with each component occupying one or more cells, called its display area. The display area aligns components vertically and
horizontally, without requiring that the components be of the same size.
GRIDBAGLAYOUT SOURCE CODE
import java.awt.*;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTextField;
public class GridBagLayoutDemo {
public static void addComponentsToPane(Container pane) {
JButton jbnButton;
pane.setLayout(new GridBagLayout());
GridBagConstraints gBC = new GridBagConstraints();
gBC.fill = GridBagConstraints.HORIZONTAL;
jbnButton = new JButton("Button 1");
gBC.weightx = 0.5;
gBC.gridx = 0;
gBC.gridy = 0;
pane.add(jbnButton, gBC);
JTextField jtf = new JTextField("TextField 1");
gBC.gridx = 2;
gBC.gridy = 0;
jtf.setEditable(false);
pane.add(jtf, gBC);
jbnButton = new JButton("Button 3");
gBC.gridx = 2;
gBC.gridy = 0;
pane.add(jbnButton, gBC);
jbnButton = new JButton("Button 4");
gBC.ipady = 40; //This component has more breadth compared to other buttons
gBC.weightx = 0.0;
gBC.gridwidth = 3;
gBC.gridx = 0;
gBC.gridy = 1;
pane.add(jbnButton, gBC);
JComboBox jcmbSample = new JComboBox(new String[]{"ComboBox 1","hi","hello"});
gBC.ipady = 0;
gBC.weighty = 1.0;
gBC.anchor = GridBagConstraints.PAGE_END;
gBC.insets = new Insets(10,0,0,0); //Padding
gBC.gridx = 1;
gBC.gridwidth = 2;
gBC.gridy = 2;
pane.add(jcmbSample, gBC);
}
private static void createAndShowGUI() {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("GridBagLayout Source Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Set up the content pane.
addComponentsToPane(frame.getContentPane());
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
Output
After Expanding the Frame
Download GridBagLayout Source Code
GRIDBAGLAYOUT CLASS
javax.swing
Class GridBagLayout
java.lang.Object
java.awt.GridBagLayout
All Implemented Interfaces:
LayoutManager, LayoutManager2, Serializable
GRIDBAGLAYOUT CONSTRUCTOR
GridBagLayout()
Creates a grid bag layout manager..