GridBagConstraints.BOTH : GridBagLayout « Swing JFC « Java



import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

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

public class GridBag4 extends JPanel {
  GridBagConstraints constraints = new GridBagConstraints();

  public GridBag4() {
    setLayout(new GridBagLayout());
    constraints.fill = GridBagConstraints.BOTH;
    constraints.weighty = 1.0;
    int x, y; // for clarity
    constraints.weightx = 0.1;
    addGB(new JButton("one"), x = 0, y = 0);
    constraints.weightx = 0.5;
    addGB(new JButton("two"), ++x, y);
    constraints.weightx = 1.0;
    addGB(new JButton("three"), ++x, y);

  void addGB(Component component, int x, int y) {
    constraints.gridx = x;
    constraints.gridy = y;
    add(component, constraints);

  public static void main(String[] args) {
    JFrame frame = new JFrame("GridBag4");
    frame.setSize(300, 100);
    frame.setLocation(200, 200);
    frame.setContentPane(new GridBag4());


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