希望有我的菜單子

Question

這是我的主：

import javax.swing.*; 
import java.awt.event.*; 


public class GUI { 

public static void main(String[] args){ 


    JFrame cF = new JFrame("HANGMAN"); 

    cF.setContentPane(new Hangman()); 
    // cF.setSize(700, 600); 
    cF.pack(); 
    cF.setLocationRelativeTo(null); 
    cF.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    cF.setVisible(true); 
    } 
} 

我想在這個子類來創建JMenuBar上，但是當我編譯和運行菜單還沒有生成。我如何讓主菜單中的JFrame創建菜單？很不錯，我不知道這是如何工作的，所以如果有人能夠幫助我，那將會很棒。

import javax.swing.*; 

import java.util.*; 
import java.awt.*; 
import java.awt.event.*; 
import java.io.FileReader; 

public class Hangman extends JPanel { 

JTextField guessesField, missField, statusField, guessField; 
JPanel guessPanel, missPanel, statusPanel; 

int gu = 0 ; 

public Hangman(){ 




    setLayout(new GridLayout(4, 1, 10, 15)); 


    /*--Guesses Left--*/ 
    JPanel guessPanel = new JPanel(); 


    JLabel guessLabel = new JLabel("Guesses Left: " + gu); 
    //JTextField guessField = new JTextField(1); 
    //guessField.setEditable(false); 
    //guessField.setText(""); 

    guessPanel.add(guessLabel); 
    //guessPanel.add(guessField); 


    add(guessPanel); 

    /*--Current Status---*/ 
    JPanel statusPanel = new JPanel(); 

    JLabel statusLabel = new JLabel("Current Status:"); 
    statusPanel.add(statusLabel); 
    statusField = new JTextField(10); 
    statusField.setText("_ _ _ _ _ _ _ _"); 
    statusField.setEditable(false); 

    add(statusPanel); 
    statusPanel.add(statusField); 

    /*--Guess---*/ 
    JPanel guessesPanel = new JPanel(); 

    JLabel guessesLabel = new JLabel("Guess:"); 
    guessesPanel.add(guessesLabel); 
    guessesField = new JTextField(1); 


    guessesPanel.add(guessesField); 

    add(guessesPanel); 

    /*--Misses---*/ 
    JPanel missPanel = new JPanel(); 

    JLabel missLabel = new JLabel("Misses:"); 
    missField = new JTextField(10); 
    missField.setEditable(false); 
    missField.setText("_ _ _ _ _ _ _ _"); 
    missPanel.add(missLabel); 
    missPanel.add(missField); 
    add(missPanel); 
} 
    public void menubar(JFrame cF){ 
    /*--Menu--*/ 
    JMenuBar menubar = new JMenuBar(); 
    cF.setJMenuBar(menubar); 

    JMenu start = new JMenu("Start"); 
    menubar.add(start); 
    JMenuItem startg = new JMenuItem("Start"); 
    JMenuItem exit = new JMenuItem("Exit"); 

    start.add(startg); 
    start.add(exit); 

    JMenu options = new JMenu("Options"); 
    menubar.add(options); 
    JRadioButtonMenuItem hard = new JRadioButtonMenuItem("Hard"); 
    JRadioButtonMenuItem medium = new JRadioButtonMenuItem("Medium"); 
    JRadioButtonMenuItem easy = new JRadioButtonMenuItem("Easy"); 

    ButtonGroup bg = new ButtonGroup(); 
    bg.add(hard); 
    bg.add(medium); 
    bg.add(easy); 

    options.add(hard); 
    options.add(medium); 
    options.add(easy); 


    /*--AllActionListeners--*/ 
    startg.addActionListener(new ActionListener(){ 
     public void actionPerformed(ActionEvent e) { 
      System.exit(0); 
     } 
    }); 

    exit.addActionListener(new ActionListener(){ 
     public void actionPerformed(ActionEvent e) { 
      System.exit(0); 
     } 
    }); 



    hard.addActionListener(new ActionListener(){ 
     public void actionPerformed(ActionEvent e) { 

     } 
    }); 

    medium.addActionListener(new ActionListener(){ 
     public void actionPerformed(ActionEvent e) { 

     } 
    }); 

    easy.addActionListener(new ActionListener(){ 
     public void actionPerformed(ActionEvent e) { 

     } 
    }); 




} 



} 

Answer 1

您已經創建了menubar(JFrame cF)方法，但您沒有在任何地方使用它。

嘗試，也許這樣

JFrame cF = new JFrame("HANGMAN"); 

Hangman h = new Hangman(); 
cF.setContentPane(h); 
h.menubar(cF); 
// cF.setSize(700, 600); 
cF.pack(); 
cF.setLocationRelativeTo(null); 
cF.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
cF.setVisible(true);