... JMenuDemo
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import javax.swing.ImageIcon;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
public class JMenuDemo implements ActionListener, ItemListener {
JTextArea jtAreaOutput;
JScrollPane jspPane;
public JMenuBar createJMenuBar() {
JMenuBar mainMenuBar;
JMenu menu1, menu2, menu3, submenu;
JMenuItem plainTextMenuItem, textIconMenuItem, iconMenuItem, subMenuItem;
JRadioButtonMenuItem rbMenuItem;
JCheckBoxMenuItem cbMenuItem;
ImageIcon icon = createImageIcon("jmenu.jpg");
mainMenuBar = new JMenuBar();
menu1 = new JMenu("File");
menu1.setMnemonic(KeyEvent.VK_M);
mainMenuBar.add(menu1);
// Creating the MenuItems
plainTextMenuItem = new JMenuItem("New",
KeyEvent.VK_T);
// can be done either way for assigning shortcuts
// menuItem.setMnemonic(KeyEvent.VK_T);
// Accelerators, offer keyboard shortcuts to bypass navigating the menu
// hierarchy.
plainTextMenuItem.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_1, ActionEvent.ALT_MASK));
plainTextMenuItem.addActionListener(this);
menu1.add(plainTextMenuItem);
textIconMenuItem = new JMenuItem("Open",
icon);
textIconMenuItem.setMnemonic(KeyEvent.VK_B);
textIconMenuItem.addActionListener(this);
menu1.add(textIconMenuItem);
// Menu Item with just an Image
iconMenuItem = new JMenuItem(icon);
iconMenuItem.setMnemonic(KeyEvent.VK_D);
iconMenuItem.addActionListener(this);
//menu1.add(iconMenuItem);
menu1.addSeparator();
// Radio Button Menu items follow a seperator
//ButtonGroup itemGroup = new ButtonGroup();
textIconMenuItem = new JMenuItem("Records", icon);
textIconMenuItem.setMnemonic(KeyEvent.VK_B);
textIconMenuItem.addActionListener(this);
menu1.add(textIconMenuItem);
// Menu Item with just an Image
iconMenuItem = new JMenuItem(icon);
iconMenuItem.setMnemonic(KeyEvent.VK_D);
iconMenuItem.addActionListener(this);
//menu1.add(iconMenuItem);
textIconMenuItem = new JMenuItem("Recent Records", icon);
textIconMenuItem.setMnemonic(KeyEvent.VK_C);
textIconMenuItem.addActionListener(this);
menu1.add(textIconMenuItem);
// Menu Item with just an Image
iconMenuItem = new JMenuItem(icon);
iconMenuItem.setMnemonic(KeyEvent.VK_E);
iconMenuItem.addActionListener(this);
//menu1.add(iconMenuItem);
// "Menu Item with Radio Button");
//rbMenuItem.setSelected(true);
//rbMenuItem.setMnemonic(KeyEvent.VK_R);
//itemGroup.add(rbMenuItem);
//rbMenuItem.addActionListener(this);
//menu1.add(rbMenuItem);
//rbMenuItem = new JRadioButtonMenuItem(
// "Menu Item 2 with Radio Button");
//itemGroup.add(rbMenuItem);
// rbMenuItem.addActionListener(this);
// menu1.add(rbMenuItem);
menu1.addSeparator();
textIconMenuItem = new JMenuItem("Passenger Profile", icon);
textIconMenuItem.setMnemonic(KeyEvent.VK_D);
textIconMenuItem.addActionListener(this);
menu1.add(textIconMenuItem);
// Menu Item with just an Image
iconMenuItem = new JMenuItem(icon);
iconMenuItem.setMnemonic(KeyEvent.VK_F);
iconMenuItem.addActionListener(this);
//menu1.add(iconMenuItem);
// Radio Button Menu items follow a seperator
//cbMenuItem = new JCheckBoxMenuItem("Menu Item with check box");
//cbMenuItem.setMnemonic(KeyEvent.VK_C);
//cbMenuItem.addItemListener(this);
//menu1.add(cbMenuItem);
//cbMenuItem = new JCheckBoxMenuItem("Menu Item 2 with check box");
//cbMenuItem.addItemListener(this);
//menu1.add(cbMenuItem);
textIconMenuItem = new JMenuItem("Services", icon);
textIconMenuItem.setMnemonic(KeyEvent.VK_E);
textIconMenuItem.addActionListener(this);
menu1.add(textIconMenuItem);
// Menu Item with just an Image
iconMenuItem = new JMenuItem(icon);
iconMenuItem.setMnemonic(KeyEvent.VK_G);
iconMenuItem.addActionListener(this);
//menu1.add(iconMenuItem);
// Sub Menu follows a seperator
menu1.addSeparator();
//submenu = new JMenu("Sub Menu");
//submenu.setMnemonic(KeyEvent.VK_S);
//subMenuItem = new JMenuItem("Sub MenuItem 1");
//subMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_2,
// ActionEvent.CTRL_MASK));
//subMenuItem.addActionListener(this);
//submenu.add(subMenuItem);
//subMenuItem = new JMenuItem("Sub MenuItem 2");
//submenu.add(subMenuItem);
//subMenuItem.addActionListener(this);
//menu1.add(submenu);
// Build second menu in the menu bar.
textIconMenuItem = new JMenuItem("Exit", icon);
textIconMenuItem.setMnemonic(KeyEvent.VK_F);
textIconMenuItem.addActionListener(this);
menu1.add(textIconMenuItem);
// Menu Item with just an Image
iconMenuItem = new JMenuItem(icon);
iconMenuItem.setMnemonic(KeyEvent.VK_H);
iconMenuItem.addActionListener(this);
menu2 = new JMenu("Menu 2");
menu2.setMnemonic(KeyEvent.VK_N);
mainMenuBar.add(menu2);
return mainMenuBar;
}
public Container createContentPane() {
// Create the content-pane-to-be.
JPanel jplContentPane = new JPanel(new BorderLayout());
jplContentPane.setLayout(new BorderLayout());// Can do it either way
// to set layout
jplContentPane.setOpaque(true);
// Create a scrolled text area.
jtAreaOutput = new JTextArea(5, 30);
jtAreaOutput.setEditable(false);
jspPane = new JScrollPane(jtAreaOutput);
// Add the text area to the content pane.
jplContentPane.add(jspPane, BorderLayout.CENTER);
return jplContentPane;
}
/**
* Returns an ImageIcon, or null if the path was invalid.
*/
protected static ImageIcon createImageIcon(String path) {
java.net.URL imgURL = JMenuDemo.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL);
} else {
System.err.println("Couldn't find image file: " + path);
return null;
}
}
private static void createGUI() {
JFrame.setDefaultLookAndFeelDecorated(true);
// Create and set up the window.
JFrame frame = new JFrame("JG Book & Fly");
// frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuDemo app = new JMenuDemo();
frame.setJMenuBar(app.createJMenuBar());
frame.setContentPane(app.createContentPane());
frame.setSize(1200, 700);
frame.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
JMenuItem source = (JMenuItem) (e.getSource());
String s = "Menu Item source: " + source.getText()
+ " (an instance of " + getClassName(source) + ")";
jtAreaOutput.append(s + "\n");
jtAreaOutput.setCaretPosition(jtAreaOutput.getDocument()
.getLength());
String name = source.getActionCommand();
if (name.equalsIgnoreCase("exit")) {
System.exit(0);
}
}
public void itemStateChanged(ItemEvent e) {
JMenuItem source = (JMenuItem) (e.getSource());
String s = "Menu Item source: "
+ source.getText()
+ " (an instance of "
+ getClassName(source)
+ ")"
+ "\n"
+ " State of check Box: "
+ ((e.getStateChange() == ItemEvent.SELECTED) ? "selected"
: "unselected");
jtAreaOutput.append(s + "\n");
jtAreaOutput.setCaretPosition(jtAreaOutput.getDocument()
.getLength());
}
// Returns the class name, no package info
protected String getClassName(Object o) {
String classString = o.getClass().getName();
int dotIndex = classString.lastIndexOf(".");
return classString.substring(dotIndex + 1); // Returns only Class name
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createGUI();
}
});
}
}
... JOptionPaneDemo
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.StringTokenizer;
import javax.swing.AbstractButton;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
public class JOptionPaneDemo extends JFrame implements ActionListener {
Container contentPane = null;
private JButton jbnDialog;
String ButtonLabels;
private JRadioButton[] dialogTypeButtons;
private JRadioButton[] messageTypeButtons;
private int[] messageTypes = {JOptionPane.PLAIN_MESSAGE,
JOptionPane.INFORMATION_MESSAGE, JOptionPane.QUESTION_MESSAGE,
JOptionPane.WARNING_MESSAGE, JOptionPane.ERROR_MESSAGE};
private ButtonGroup messageTypeButtonGroup, buttonTypeButtonGroup,
dialogTypeButtonGroup;
private JRadioButton[] optionTypeButtons;
private int[] OptionTypes = {JOptionPane.DEFAULT_OPTION,
JOptionPane.YES_NO_OPTION, JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.OK_CANCEL_OPTION};
public static void main(String[] args) {
new JOptionPaneDemo();
}
public JOptionPaneDemo() {
super("JOptionPane Source Demo");
addWindowListener(new WindowListener());
contentPane = getContentPane();
contentPane.setLayout(new GridLayout(0, 1));
JPanel jplButton = new JPanel();
jbnDialog = new JButton("Show an Option Pane");
jbnDialog.addActionListener(this);
jplButton.add(jbnDialog);
contentPane.add(jplButton);
createRadioButtonGroupings();
ButtonLabels = "Button1 Button2 Button3";
pack();
setSize(1400, 700);
setVisible(true);
}
public void createRadioButtonGroupings() {
JPanel jplDialogType = new JPanel();
dialogTypeButtonGroup = new ButtonGroup();
dialogTypeButtons = new JRadioButton[]{
new JRadioButton("Show Message", true),
new JRadioButton("Get Confirmation"),
new JRadioButton("Collect Input"),
new JRadioButton("Present Options")};
for (int i = 0; i < dialogTypeButtons.length; i++) {
dialogTypeButtonGroup.add(dialogTypeButtons[i]);
jplDialogType.add(dialogTypeButtons[i]);
}
contentPane.add(jplDialogType);
JPanel jplMessageType = new JPanel();
messageTypeButtonGroup = new ButtonGroup();
messageTypeButtons = new JRadioButton[]{
new JRadioButton("Plain"),
new JRadioButton("Information", true),
new JRadioButton("Question"), new JRadioButton("Warning"),
new JRadioButton("Error")};
for (int i = 0; i < messageTypeButtons.length; i++) {
messageTypeButtonGroup.add(messageTypeButtons[i]);
jplMessageType.add(messageTypeButtons[i]);
}
contentPane.add(jplMessageType);
JPanel jplButtonType = new JPanel();
buttonTypeButtonGroup = new ButtonGroup();
optionTypeButtons = new JRadioButton[]{
new JRadioButton("Default", true),
new JRadioButton("Yes/No"),
new JRadioButton("Yes/No/Cancel"),
new JRadioButton("OK/Cancel")};
for (int i = 0; i < optionTypeButtons.length; i++) {
buttonTypeButtonGroup.add(optionTypeButtons[i]);
jplButtonType.add(optionTypeButtons[i]);
}
contentPane.add(jplButtonType);
}
// Windows Listener for Window Closing
public class WindowListener extends WindowAdapter {
public void windowClosing(WindowEvent event) {
System.exit(0);
}
}
public void actionPerformed(ActionEvent event) {
/*
* dialogTypeButtons =
*
* new JRadioButton[] { new JRadioButton("Show Message", true),
*
* new JRadioButton("Get Confirmation"),
*
* new JRadioButton("Collect Input"),
*
* new JRadioButton("Present Options") };
*/
if (dialogTypeButtons[0].isSelected()) {
JOptionPane.showMessageDialog(this, "Show Message",
"Simple Dialog", getMessageType());
} else if (dialogTypeButtons[1].isSelected()) {
JOptionPane.showConfirmDialog(this, "Get Confirmation",
"Simple Dialog", getButtonType(), getMessageType());
} else if (dialogTypeButtons[2].isSelected()) {
JOptionPane.showInputDialog(this, "Collect Input",
"Simple Dialog", getMessageType(), null, null, null);
} else if (dialogTypeButtons[3].isSelected()) {
JOptionPane.showOptionDialog(this, "Present Options",
"Simple Dialog", getButtonType(), getMessageType(),
null, substrings(ButtonLabels), null);
}
}
private int getAssociatedType(AbstractButton[] buttons, int[] types) {
for (int i = 0; i < buttons.length; i++) {
if (buttons[i].isSelected()) {
return (types[i]);
}
}
return (types[0]);
}
private int getMessageType() {
return (getAssociatedType(messageTypeButtons, messageTypes));
}
private int getButtonType() {
return (getAssociatedType(optionTypeButtons, OptionTypes));
}
private String[] substrings(String string) {
StringTokenizer tok = new StringTokenizer(string);
String[] substrings = new String[tok.countTokens()];
for (int i = 0; i < substrings.length; i++) {
substrings[i] = tok.nextToken();
}
return (substrings);
}
}
上面是两个不同的第一个是JMenu，另一个是JFrame。我想通过点击new ...
JMenu来调用第二个“选项”窗格
答案 0 :(得分：1)
分开您的顾虑，即对菜单项使用单独的操作。 只需在plainTextMenuItem中添加一个action或actionlistener，然后调用new JOptionPaneDemo（）;
plainTextMenuItem.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e){
new JOptionPaneDemo();
}
});