java - 如何关闭当前的扩展JFrame

Question

我有一个扩展的JFrame，但无法使用frame.setVisible(false);关闭它。我不想关闭整个程序，但想在另一个类中打开我的其他扩展 JFrame 之一。怎么办呢？我的另一个类称为 Genders，当我按下另一个扩展 JFrame 上的按钮(btnNewGame)时，它必须打开。

这是我的类打开下一个 JFrame 的代码，但我无法关闭当前的 JFrame:

Class1(我要关闭的 JFrame):

    import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;
import javax.swing.border.EmptyBorder;

import com.sun.glass.events.WindowEvent;

import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JButton;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.ImageIcon;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.awt.event.ActionEvent;

public class ProfileHome extends JFrame {

    private JPanel contentPane;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {

                try {
                    ProfileHome profileHome = new ProfileHome();
                    profileHome.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    public ProfileHome() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 300);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        try {
             // Open an audio input stream.           
              File soundFile = new File("C:/My Awesome Stuff/Personal/Carman/My Eclipse Programs/Game/nervous_testpilot - Frozen Synapse Red - Parting Shots.flac"); //you could also get the sound file with a URL
              AudioInputStream audioIn = AudioSystem.getAudioInputStream(soundFile);              
             // Get a sound clip resource.
             Clip clip = AudioSystem.getClip();
             // Open audio clip and load samples from the audio input stream.
             clip.open(audioIn);
             clip.start();
          } catch (UnsupportedAudioFileException e) {
             e.printStackTrace();
          } catch (IOException e) {
             e.printStackTrace();
          } catch (LineUnavailableException e) {
             e.printStackTrace();
          }


        JLabel lblWelcomeWarrior = new JLabel("Welcome, Warrior!");
        lblWelcomeWarrior.setForeground(new Color(255, 255, 255));
        lblWelcomeWarrior.setFont(new Font("Perpetua Titling MT", Font.PLAIN, 20));
        lblWelcomeWarrior.setBounds(117, 11, 215, 23);
        contentPane.add(lblWelcomeWarrior);

        JButton btnNewGame = new JButton("New Game");
        btnNewGame.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                new Genders().setVisible(true);

            }
        });
        btnNewGame.setBounds(324, 35, 100, 23);
        contentPane.add(btnNewGame);

        JLabel label = new JLabel("");
        label.setIcon(new ImageIcon("C:\\Users\\WhiteFringe\\Pictures\\Wallpapers\\9gag\\Gifs\\gixdfcbvehy.gif"));
        label.setLabelFor(label);
        label.setBounds(0, 0, 434, 261);
        contentPane.add(label);
    }
}

Class2(我正在打开的 JFrame):

    import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.awt.event.ActionEvent;
import javax.swing.JLabel;

public class Genders extends JFrame {

    private JPanel contentPane;

    /**
     * Launch the application.
     */
    public static void main(String[] args) throws IOException{
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Genders frame = new Genders();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    /*String[] imageList = 
            {
                    "female warrior.jpg", "male warrior.jpg"
            };
    */

    public Genders() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 300);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        ImageIcon maleicon = new ImageIcon("male warrior.png");

        JLabel Avatar = new JLabel();
        Avatar.setBounds(0, 33, 227, 261);
        contentPane.add(Avatar);

        ImageIcon femaleicon = new ImageIcon("female warrior2.png");

        JButton btnFelame = new JButton("Female");
        btnFelame.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ex) {

            Avatar.setIcon(femaleicon);
            }
        });
        btnFelame.setBounds(335, 11, 89, 23);
        contentPane.add(btnFelame);

            JButton btnMale = new JButton("Male");
            btnMale.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    Avatar.setIcon(maleicon);
                }
            });
            btnMale.setBounds(335, 45, 89, 23);
            contentPane.add(btnMale);

            JButton btnOkay = new JButton("Okay");
            btnOkay.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {

                }
            });
            btnOkay.setBounds(335, 227, 89, 23);
            contentPane.add(btnOkay);

            JLabel Genderbg = new JLabel("");
            Genderbg.setIcon(new ImageIcon("C:\\Users\\WhiteFringe\\Pictures\\Wallpapers\\9gag\\Gifs\\llkokigiphy.gif"));
            Genderbg.setBounds(0, 0, 434, 261);
            contentPane.add(Genderbg);
    }
}

Answer 1

为了处理当前的类(表单)并打开另一个类(表单)，您可以使用以下代码。要退出您的应用程序，请使用 System.exit(0)

   java.awt.EventQueue.invokeLater(new Runnable() {
    public void run() {
        try {
            dispose();
            new Class2().setVisible(true);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(Class2().class.getName()).log(Level.SEVERE, null, ex);
        }
    }
});

此代码将在您要关闭的类中使用(例如Class1)