当有人输入密码并弹出一个新密码时，我希望我的原始窗口关闭，或者如果您有更好的建议，请告诉我。这是我的代码，
主要班级，
package notebook;
import java.awt.EventQueue;
import java.awt.Image;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ImageIcon;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.border.CompoundBorder;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
public class mainPage extends JDialog {
private JTextField textField;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
mainPage frame = new mainPage();
frame.setVisible(true);
frame.setResizable(false);
Image icon = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB_PRE);
frame.setIconImage(icon);
frame.setTitle("Notebook");
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
* @throws IOException
*/
public mainPage() throws IOException {
setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
setBounds(100, 100, 560, 390);
JLabel contentPane = new JLabel(
new ImageIcon(
ImageIO.read(new File(
"C:\\Users\\Gianmarco\\workspace\\notebook\\src\\notebook\\cool_cat.jpg"))));
contentPane.setBorder(new CompoundBorder());
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblEnterPassword = new JLabel(" Enter Password");
lblEnterPassword.setForeground(Color.LIGHT_GRAY);
lblEnterPassword.setBackground(Color.DARK_GRAY);
lblEnterPassword.setOpaque(true);
lblEnterPassword.setBounds(230, 60, 100, 15);
contentPane.add(lblEnterPassword);
security sInfo = new security();
textField = new JPasswordField(10);
nbTab notebook = new nbTab();
Action action = new AbstractAction()
{
@Override
public void actionPerformed(ActionEvent e)
{
String textFieldValue = textField.getText();
if (sInfo.checkPassword(textFieldValue)){
System.out.println("working");
notebook.setVisible(true);
//dispose();
}
}
};
JPanel panel = new JPanel();
textField.setBounds(230, 85, 100, 15);
contentPane.add(textField);
contentPane.add(panel);
textField.setColumns(10);
textField.addActionListener(action);
}
}
密码类
package notebook;
public class security {
private String password = "kitten";
protected boolean checkPassword(String x){
if(x.length()<15 && x.equals(password)) return true;
return false;
}
}
JTabbedPane类，
package notebook;
import javax.swing.JTabbedPane;
import javax.swing.JEditorPane;
import javax.swing.JList;
import javax.swing.JButton;
public class nbTab<E> extends JTabbedPane {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* Create the panel.
*/
public nbTab() {
JEditorPane editorPane = new JEditorPane();
JButton btnNewButton = new JButton("New button");
btnNewButton.setBounds(480, 345, 40, 30);
editorPane.add(btnNewButton);
editorPane.setBounds(80, 45, 400, 300);
addTab("New tab", null, editorPane, null);
JList<? extends E> list = new JList();
addTab("New tab", null, list, null);
}
}
在我的主要课程中，在第76-82行（动作事件列表器所在的位置）我希望关闭当前窗口并打开一个新的笔记本窗口。我使用dispose（）来关闭密码窗口。然后我尝试用setVisible（），setSelectedComponent和setSelectedIndex打开JTabbedPane但是我要么错误地使用它们，要么必须有更好的方法来执行此操作，因为它不起作用。任何建议都表示感谢大家的帮助。
答案 0 :(得分：0)
正如MadProgrammer和Frakcool所建议的那样，CardLayout布局管理器在您的案例中是一个有趣的选项。有关Swing的几个布局管理器的详细介绍，请访问：A Visual Guide to Layout Managers。
您可以使用以下代码了解它的工作原理。我对您的主要应用程序类进行了一些修改：
JFrame（而不是JDialog）延伸。MainPage，NotebookTab和Security。以下是修改后的MainPage类：
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
public class MainPage extends JFrame {
private static final String LOGIN_PANEL_ID = "Login panel";
private static final String NOTEBOOK_ID = "Notebook tabbed pane";
private JPanel mainPanel;
private CardLayout cardLayout;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MainPage frame = new MainPage();
frame.setResizable(false);
Image icon = new BufferedImage(1, 1,
BufferedImage.TYPE_INT_ARGB_PRE);
frame.setIconImage(icon);
frame.setTitle("Notebook");
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
* @throws IOException
*/
public MainPage() throws IOException {
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
setBounds(100, 100, 560, 390);
cardLayout = new CardLayout();
mainPanel = new JPanel(cardLayout);
mainPanel.add(createLoginPanel(), LOGIN_PANEL_ID);
mainPanel.add(new NotebookTab(), NOTEBOOK_ID);
getContentPane().add(mainPanel);
}
private JPanel createLoginPanel() throws IOException {
JPanel loginPanel = new JPanel(new BorderLayout());
JPanel passwordPanel = new JPanel();
passwordPanel.setLayout(new BoxLayout(passwordPanel, BoxLayout.PAGE_AXIS));
JLabel lblEnterPassword = new JLabel("Enter Password");
lblEnterPassword.setForeground(Color.LIGHT_GRAY);
lblEnterPassword.setBackground(Color.DARK_GRAY);
lblEnterPassword.setOpaque(true);
lblEnterPassword.setHorizontalAlignment(SwingConstants.CENTER);
lblEnterPassword.setMaximumSize(new Dimension(100, 16));
lblEnterPassword.setAlignmentX(Component.CENTER_ALIGNMENT);
JTextField textField = new JPasswordField(10);
textField.setMaximumSize(new Dimension(100, 16));
textField.setAlignmentX(Component.CENTER_ALIGNMENT);
passwordPanel.add(Box.createRigidArea(new Dimension(0, 42)));
passwordPanel.add(lblEnterPassword);
passwordPanel.add(Box.createRigidArea(new Dimension(0, 10)));
passwordPanel.add(textField);
loginPanel.add(passwordPanel, BorderLayout.NORTH);
Action loginAction = new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
if (new Security().checkPassword(textField.getText())) {
System.out.println("working");
cardLayout.show(mainPanel, NOTEBOOK_ID);
}
}
};
textField.addActionListener(loginAction);
String imagePath = "C:\\Users\\Gianmarco\\workspace\\" +
"notebook\\src\\notebook\\cool_cat.jpg";
BufferedImage bufferedImage = ImageIO.read(new File(imagePath));
JLabel imageLabel = new JLabel(new ImageIcon(bufferedImage));
loginPanel.add(imageLabel, BorderLayout.CENTER);
return loginPanel;
}
}