Align your components in horizontal or vertical layout : BoxLayout « Swing JFC « Java






  1. Java
  2. Swing JFC
  3. BoxLayout

Align your components in horizontal or vertical layout

 

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;

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

public class Main extends JFrame {
  public Main() {
    super("Demostrating BoxLayout");
    final int SIZE = 3;
    Container c = getContentPane();
    c.setLayout(new BorderLayout(30, 30));

    Box boxes[] = new Box[4];

    boxes[0] = Box.createHorizontalBox();
    boxes[1] = Box.createVerticalBox();
    boxes[2] = Box.createHorizontalBox();
    boxes[3] = Box.createVerticalBox();

    for (int i = 0; i < SIZE; i++)
      boxes[0].add(new JButton("boxes[0]: " + i));

    for (int i = 0; i < SIZE; i++) {
      boxes[1].add(Box.createVerticalStrut(25));
      boxes[1].add(new JButton("boxes[1]: " + i));
    }

    for (int i = 0; i < SIZE; i++) {
      boxes[2].add(Box.createHorizontalGlue());
      boxes[2].add(new JButton("boxes[2]: " + i));
    }

    for (int i = 0; i < SIZE; i++) {
      boxes[3].add(Box.createRigidArea(new Dimension(12, 8)));
      boxes[3].add(new JButton("boxes[3]: " + i));
    }

    JPanel panel = new JPanel();
    panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));

    for (int i = 0; i < SIZE; i++) {
      panel.add(Box.createGlue());
      panel.add(new JButton("panel: " + i));
    }

    c.add(boxes[0], BorderLayout.NORTH);
    c.add(boxes[1], BorderLayout.EAST);
    c.add(boxes[2], BorderLayout.SOUTH);
    c.add(boxes[3], BorderLayout.WEST);
    c.add(panel, BorderLayout.CENTER);

    setSize(350, 300);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
    
  }

  public static void main(String args[]) {
    Main app = new Main();
  }
}








Related examples in the same category

1.Separating Components in a Row or Column
2.Glue spreads the components as far apart as possible.
3.Strut spreads the components apart by a fixed distance
4.Laying Out Components in a Row or Column
5.A vertical box container arranges the components top-to-bottom aligned in their preferred sizes.
6.BoxLayout puts components into a row or into a column
7.BoxLayout: set a rigid area among our components.