如何在按下按钮时在已经可见的GUI中打开新选项卡或打开新窗口？

Question

我想知道如何使用Netbeans在已经打开的GUI中打开一个新的选项卡/窗口。

此外我正在尝试制作的游戏每个窗口会有1个问题并且有4个答案按钮供您选择，如果您得到正确答案，您的分数将保存在可在整个代码中使用的变量中。< / p>

**package pokemontrivia;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;

public class triviagui extends javax.swing.JFrame implements ActionListener{

    public triviagui() {
        initComponents();
        init();
    }
    private void init(){
          setTitle("Pokemon Trivia Game");
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          setSize(600, 480);
          setLocationRelativeTo(null);
          setVisible(true);
          quitButton.addActionListener(new CloseListener());
    }

     @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jTextField1 = new javax.swing.JTextField();
        easyqestionsLabel = new javax.swing.JTextField();
        mediumqestionsLabel = new javax.swing.JTextField();
        hardqestionsLabel = new javax.swing.JTextField();
        playButton3 = new javax.swing.JButton();
        playButton2 = new javax.swing.JButton();
        playButton1 = new javax.swing.JButton();
        quitButton = new javax.swing.JButton();
        settingsButton = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTextField1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
        jTextField1.setText("Welcome to Pokemon Trivia !");

        easyqestionsLabel.setFont(new java.awt.Font("Tahoma", 1, 12)); // NOI18N
        easyqestionsLabel.setText("Easy Questions");

        mediumqestionsLabel.setFont(new java.awt.Font("Tahoma", 1, 12)); // NOI18N
        mediumqestionsLabel.setText("Medium Questions");

        hardqestionsLabel.setFont(new java.awt.Font("Tahoma", 1, 12)); // NOI18N
        hardqestionsLabel.setText("Hard Questions");

        playButton3.setText("Play !");

        playButton2.setText("Play !");

        playButton1.setText("Play !");

        quitButton.setText("Quit");

        settingsButton.setText("Settings");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(85, 85, 85)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                        .addComponent(mediumqestionsLabel)
                        .addComponent(playButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(easyqestionsLabel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(hardqestionsLabel)
                            .addComponent(playButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(playButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(settingsButton, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 110, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(quitButton, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 110, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addGap(84, 84, 84))
            .addGroup(layout.createSequentialGroup()
                .addGap(116, 116, 116)
                .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(127, Short.MAX_VALUE))
        );

        layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {easyqestionsLabel, hardqestionsLabel, mediumqestionsLabel});

        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 86, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(settingsButton, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(17, 17, 17)
                        .addComponent(quitButton, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(easyqestionsLabel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(playButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(mediumqestionsLabel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(playButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 58, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(hardqestionsLabel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(playButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 62, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(69, 69, 69))
        );

        layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {playButton1, playButton2, playButton3});

        pack();
    }// </editor-fold>                        

    public static void main(String args[]) {

        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(triviagui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(triviagui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(triviagui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(triviagui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }

        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {

                new triviagui().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify                     
    private javax.swing.JTextField easyqestionsLabel;
    private javax.swing.JTextField hardqestionsLabel;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField mediumqestionsLabel;
    private javax.swing.JButton playButton1;
    private javax.swing.JButton playButton2;
    private javax.swing.JButton playButton3;
    private javax.swing.JButton quitButton;
    private javax.swing.JButton settingsButton;
    // End of variables declaration                   

    @Override
    public void actionPerformed(ActionEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

}**

Answer 1

我倾向于只为问题提供JLabel，在按钮组中为答案提供4 x JRadioButton个对象。当用户选择答案并被告知是/否时，请更改问题的文本（使用setText()）和可能的答案。

这样做的好处是只需要一个面板就可以提出多达数千个问题。

如果有必要为问题设置一个面板而另一个面板需要结果，则使用带有两张卡片的CardLayout。一个是问题，另一个是答案。

此short example显示了如何使用CardLayout。