Creating a JButton : JButton « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JButton

public JButton()
    JButton button = new JButton();
    
    public JButton(Icon image)
    Icon icon = new ImageIcon("dog.jpg");
    JButton button = new JButton(icon);
    
    public JButton(String text)
    JButton button = new JButton("Dog");
    
    public JButton(String text, Icon icon)
    Icon icon = new ImageIcon("dog.jpg");
    JButton button = new JButton("Dog", icon);
    
    public JButton(Action action)
    Action action = ...;
    JButton button = new JButton(action);

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

public class MainClass{
  
  public static void main(String[] a){
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.add(new ButtonDemo());
    f.setSize(500,500);
    f.setVisible(true);
  }
}

class ButtonDemo extends JPanel implements ActionListener {
  JTextField jtf;

  public ButtonDemo() {
    try {
      SwingUtilities.invokeAndWait(new Runnable() {
        public void run() {
          makeGUI();
        }
      });
    } catch (Exception exc) {
      System.out.println("Can't create because of " + exc);
    }
  }

  private void makeGUI() {
    setLayout(new FlowLayout());

    ImageIcon france = new ImageIcon("france.gif");
    JButton jb = new JButton(france);
    jb.setActionCommand("France");
    jb.addActionListener(this);
    add(jb);

    ImageIcon germany = new ImageIcon("germany.gif");
    jb = new JButton(germany);
    jb.setActionCommand("Germany");
    jb.addActionListener(this);
    add(jb);

    ImageIcon italy = new ImageIcon("italy.gif");
    jb = new JButton(italy);
    jb.setActionCommand("Italy");
    jb.addActionListener(this);
    add(jb);

    ImageIcon japan = new ImageIcon("japan.gif");
    jb = new JButton(japan);
    jb.setActionCommand("Japan");
    jb.addActionListener(this);
    add(jb);

    jtf = new JTextField(15);
    add(jtf);
  }

  public void actionPerformed(ActionEvent ae) {
    jtf.setText(ae.getActionCommand());
  }
}

14.5.JButton
	14.5.1.	Creating a JButton
	14.5.2.	Creating a JButton from an Action object
	14.5.3.	Using Mnemonics
	14.5.4.	Displaying Mnemonics in Button text
	14.5.5.	Adding Icon to JButton
	14.5.6.	Adding a Rollover and Pressed Icon to a JButton Component
	14.5.7.	Adding a Disabled Icon to a JButton Component
	14.5.8.	Set pressed icon
	14.5.9.	Setting the Gap Size Between the Label and Icon in a JButton Component
	14.5.10.	Change button Horizontal Text Position
	14.5.11.	Set Rollover Icon and set Rollover Enabled
	14.5.12.	Button with user-draw Image icon
	14.5.13.	Button icons, a default button, HTML in a button,and button mnemonics.
	14.5.14.	Placing Text and Icon together
	14.5.15.	Displaying HTML on JButton
	14.5.16.	Creating a Multiline Label for a JButton Component
	14.5.17.	Lines are left justified. This label text will center the lines
	14.5.18.	Label text italicizes the second line
	14.5.19.	Register two event listeners to JButton
	14.5.20.	Setting the default button
	14.5.21.	Set tooltip for button
	14.5.22.	Call button doClick method to simulate a click action
	14.5.23.	Dynamically update the appearance of a component
	14.5.24.	Customizing a JButton Look and Feel
	14.5.25.	Buttons used in toolbars.
	14.5.26.	Transfer focus from button to button with help of arrows keys.
	14.5.27.	Arrow Button