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增加《Core Java（第9版）》原书代码
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‎CoreJava/corejava.zip‎

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‎CoreJava/gutenberg/alice30.txt‎

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‎CoreJava/gutenberg/crsto10.txt‎

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‎CoreJava/v1ch02/ImageViewer/Cay.gif‎

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‎CoreJava/v1ch02/ImageViewer/ImageViewer.java‎

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import java.awt.EventQueue;
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import java.awt.event.*;
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import java.io.*;
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import javax.swing.*;
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/**
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* A program for viewing images.
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* @version 1.22 2007-05-21
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* @author Cay Horstmann
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*/
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public class ImageViewer
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{
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public static void main(String[] args)
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{
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EventQueue.invokeLater(new Runnable()
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{
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public void run()
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{
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JFrame frame = new ImageViewerFrame();
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frame.setTitle("ImageViewer");
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setVisible(true);
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}
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});
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}
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}
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/**
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* A frame with a label to show an image.
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*/
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class ImageViewerFrame extends JFrame
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{
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private JLabel label;
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private JFileChooser chooser;
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private static final int DEFAULT_WIDTH = 300;
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private static final int DEFAULT_HEIGHT = 400;
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public ImageViewerFrame()
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{
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setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
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// use a label to display the images
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label = new JLabel();
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add(label);
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// set up the file chooser
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chooser = new JFileChooser();
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chooser.setCurrentDirectory(new File("."));
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// set up the menu bar
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JMenuBar menuBar = new JMenuBar();
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setJMenuBar(menuBar);
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JMenu menu = new JMenu("File");
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menuBar.add(menu);
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JMenuItem openItem = new JMenuItem("Open");
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menu.add(openItem);
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openItem.addActionListener(new ActionListener()
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{
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public void actionPerformed(ActionEvent event)
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{
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// show file chooser dialog
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int result = chooser.showOpenDialog(null);
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// if file selected, set it as icon of the label
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if (result == JFileChooser.APPROVE_OPTION)
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{
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String name = chooser.getSelectedFile().getPath();
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label.setIcon(new ImageIcon(name));
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}
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}
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});
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JMenuItem exitItem = new JMenuItem("Exit");
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menu.add(exitItem);
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exitItem.addActionListener(new ActionListener()
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{
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public void actionPerformed(ActionEvent event)
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{
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System.exit(0);
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}
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});
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}
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}

‎CoreJava/v1ch02/ImageViewer/Tower.gif‎

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‎CoreJava/v1ch02/ImageViewer/mug.png‎

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‎CoreJava/v1ch02/Welcome/Welcome.java‎

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/**
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* This program displays a greeting from the authors.
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* @version 1.20 2004-02-28
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* @author Cay Horstmann
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*/
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public class Welcome
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{
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public static void main(String[] args)
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{
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String[] greeting = new String[3];
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greeting[0] = "Welcome to Core Java";
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greeting[1] = "by Cay Horstmann";
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greeting[2] = "and Gary Cornell";
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for (String g : greeting)
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System.out.println(g);
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}
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}

‎CoreJava/v1ch02/WelcomeApplet/WelcomeApplet.html‎

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<html>
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<head>
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<title>WelcomeApplet</title>
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</head>
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<body>
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<hr/>
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<p>
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This applet is from the book
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<a href="http://www.horstmann.com/corejava.html">Core Java</a>
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by <em>Cay Horstmann</em> and <em>Gary Cornell</em>.
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</p>
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<applet code="WelcomeApplet.class" width="400" height="200">
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<param name="greeting" value ="Welcome to Core Java!"/>
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</applet>
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<hr/>
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<p><a href="WelcomeApplet.java">The source.</a></p>
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</body>
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</html>

‎CoreJava/v1ch02/WelcomeApplet/WelcomeApplet.java‎

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import java.awt.*;
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import java.awt.event.*;
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import java.net.*;
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import javax.swing.*;
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/**
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* This applet displays a greeting from the authors.
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* @version 1.22 2007-04-08
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* @author Cay Horstmann
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*/
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public class WelcomeApplet extends JApplet
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{
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public void init()
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{
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EventQueue.invokeLater(new Runnable()
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{
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public void run()
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{
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setLayout(new BorderLayout());
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JLabel label = new JLabel(getParameter("greeting"), SwingConstants.CENTER);
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label.setFont(new Font("Serif", Font.BOLD, 18));
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add(label, BorderLayout.CENTER);
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JPanel panel = new JPanel();
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JButton cayButton = new JButton("Cay Horstmann");
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cayButton.addActionListener(makeAction("http://www.horstmann.com"));
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panel.add(cayButton);
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JButton garyButton = new JButton("Gary Cornell");
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garyButton.addActionListener(makeAction("mailto:gary_cornell@apress.com"));
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panel.add(garyButton);
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add(panel, BorderLayout.SOUTH);
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}
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});
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}
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private ActionListener makeAction(final String urlString)
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{
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return new ActionListener()
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{
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public void actionPerformed(ActionEvent event)
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{
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try
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{
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getAppletContext().showDocument(new URL(urlString));
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}
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catch (MalformedURLException e)
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{
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e.printStackTrace();
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}
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}
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};
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}
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}

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