Writing a User Interface - Java 7 for Absolute Beginners

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Listing 7-3. A more complex Swing program

package com.apress.java7forabsolutebeginners.examples.swingdemo;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextArea;

public class SwingDemo implements ActionListener, MouseListener {

private JFrame frame = new JFrame("SwingDemo");

private JPanel panel = new JPanel();

private JButton sayButton = new JButton("I say!");

private JLabel sayLabel = new JLabel("Say something:");

private JTextArea sayText = new JTextArea();

private void addMenu(JFrame frame) {

JMenu file = new JMenu("File");

file.setMnemonic('F');

JMenuItem exitItem = new JMenuItem("Exit");

exitItem.setMnemonic('x');

exitItem.addActionListener(this);

file.add(exitItem);

JMenuBar menuBar = new JMenuBar();

menuBar.add(file);

frame.setJMenuBar(menuBar);

}

private void arrangeComponents(JFrame frame) {

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

sayText.setPreferredSize(new Dimension(200, 50));

sayText.setAlignmentX(Component.CENTER_ALIGNMENT);

sayLabel.setAlignmentX(Component.CENTER_ALIGNMENT);

sayButton.setAlignmentX(Component.CENTER_ALIGNMENT);

sayButton.addMouseListener(this);

panel.add(sayLabel);

panel.add(sayText);

Java 7 for Absolute Beginners

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