ActionTest.java Source code

Introduction

Here is the source code for ActionTest.java

Source

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class ActionTest {
    public static void main(String args[]) {
        JFrame frame = new JFrame();
        Container contentPane = frame.getContentPane();
        ActionListener listener = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.out.println("Command: " + e.getActionCommand());
                System.out.println("Modifiers: ");
                int modifiers = e.getModifiers();
                System.out.println("\tALT : " + checkMod(modifiers, ActionEvent.ALT_MASK));
                System.out.println("\tCTRL : " + checkMod(modifiers, ActionEvent.CTRL_MASK));
                System.out.println("\tMETA : " + checkMod(modifiers, ActionEvent.META_MASK));
                System.out.println("\tSHIFT: " + checkMod(modifiers, ActionEvent.SHIFT_MASK));
                Object source = e.getSource();
                if (source instanceof JComboBox) {
                    JComboBox jb = (JComboBox) source;
                    System.out.println("Combo: " + jb.getSelectedItem());
                }
            }

            private boolean checkMod(int modifiers, int mask) {
                return ((modifiers & mask) == mask);
            }
        };

        String flavors[] = { "Item 1", "Item 2", "Item 3" };
        JComboBox jc = new JComboBox(flavors);
        jc.setMaximumRowCount(4);
        jc.setEditable(true);
        jc.addActionListener(listener);
        contentPane.add(jc, BorderLayout.NORTH);

        JButton b = new JButton("Button!");
        b.addActionListener(listener);
        contentPane.add(b, BorderLayout.CENTER);

        JPanel panel = new JPanel();
        JLabel label = new JLabel("Label 1: ");
        JTextField text = new JTextField("Type your text", 15);
        text.addActionListener(listener);
        label.setDisplayedMnemonic(KeyEvent.VK_1);
        label.setLabelFor(text);
        panel.add(label);
        panel.add(text);
        contentPane.add(panel, BorderLayout.SOUTH);

        frame.pack();
        frame.show();
    }
}