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| 6. 39. 8. 桌面帮助应用 |
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import java.awt.Desktop;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.URI;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class DesktopDemo {
static Desktop desktop;
public static void main(String[] args) {
if (Desktop.isDesktopSupported()) {
desktop = Desktop.getDesktop();
} else {
System.out.println("Desktop class is not supported");
System.exit(1);
}
JMenuItem openItem = new JMenuItem("Open");
JMenuItem editItem = new JMenuItem("Edit");
JMenuItem printItem = new JMenuItem("Print");
JMenuItem browseToItem = new JMenuItem("Go to www.java2java.com");
JMenuItem mailToItem = new JMenuItem("Email to a@java.com");
JMenu fileMenu = new JMenu("File");
JMenu mailMenu = new JMenu("Email");
JMenu browseMenu = new JMenu("Browser");
openItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = new JFileChooser();
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
try {
desktop.open(chooser.getSelectedFile().getAbsoluteFile());
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
});
fileMenu.add(openItem);
editItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = new JFileChooser();
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
try {
desktop.edit(chooser.getSelectedFile().getAbsoluteFile());
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
});
fileMenu.add(editItem);
printItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = new JFileChooser();
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
try {
desktop.print(chooser.getSelectedFile().getAbsoluteFile());
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
});
fileMenu.add(printItem);
browseToItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
URI browseURI = new URI("www.java2java.com");
desktop.browse(browseURI);
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
});
browseMenu.add(browseToItem);
mailToItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
URI mailURI = new URI("mailto:support@java.com");
desktop.mail(mailURI);
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
});
mailMenu.add(mailToItem);
JMenuBar jMenuBar = new JMenuBar();
jMenuBar.add(fileMenu);
jMenuBar.add(browseMenu);
jMenuBar.add(mailMenu);
JFrame frame = new JFrame();
frame.setTitle("Desktop Helper Applications");
frame.setSize(300, 100);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setJMenuBar(jMenuBar);
frame.setVisible(true);
}
}
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