Question

我正在制作一个猜猜你的号码游戏，但它不会运行，只是说它终止了。

还需要有关整体代码的更多帮助

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
public class GuessMyNumber extends JFrame {


    private JTextField textField;
    public JPanel Mainpanel;
    public JLabel lblEnterNumberHere;
    public JLabel lblNewLabel;
    public JButton btnCheckGuess;
    public JLabel lblNewLabel_1;
    Random rand = new Random();
    int random = rand.nextInt(100);
    int cap = 3;
    int tries = 0;

    public GuessMyNumber(){
        getContentPane().setLayout(null);

        Mainpanel = new JPanel();
        Mainpanel.setBounds(0, 0, 424, 250);
        getContentPane().add(Mainpanel);
        Mainpanel.setLayout(null);

        lblNewLabel = new JLabel("Enter a number between 1-100 ");
        lblNewLabel.setBounds(126, 11, 153, 14);
        Mainpanel.add(lblNewLabel);

        lblEnterNumberHere = new JLabel("Enter number here");
        lblEnterNumberHere.setBounds(164, 51, 90, 14);
        Mainpanel.add(lblEnterNumberHere);

        textField = new JTextField();
        textField.setBounds(174, 76, 86, 20);
        Mainpanel.add(textField);
        textField.setColumns(10);

        btnCheckGuess = new JButton("Check guess");
        btnCheckGuess.setBounds(161, 107, 93, 23);
        Mainpanel.add(btnCheckGuess);

        lblNewLabel_1 = new JLabel("");
        lblNewLabel_1.setBounds(150, 159, 129, 47);
        Mainpanel.add(lblNewLabel_1);

        initialize();

    }

    private class ButtonListener implements ActionListener
    {
        @Override
        public void actionPerformed(ActionEvent arg0)
        {
            int guess = Integer.parseInt(textField.getText());
            if(tries==cap){
                lblNewLabel_1.setText("You have guessed too many times.");
            }
            else{
                tries++;
                if(guess>random)
                    lblNewLabel_1.setText("Your guess was too high.");
                else if(guess<random)
                    lblNewLabel_1.setText("Your guess is too low.");
                else
                    lblNewLabel_1.setText("You are correct.");
            }
        }
    }

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new GuessMyNumber();
            }
        });
    }

    private void initialize()
    {
        Mainpanel.setPreferredSize(new Dimension(300,300));
        // Create labels, buttons, etc. and place them on the window here...
    }
}

Answer 1

看起来好像忘记了让窗口可见。这可以通过以下方式完成：setVisible(true);

如果窗口不可见，事件侦听器将无法启动，并且由于没有其他代码可以执行，程序将结束。

GuessMyNumber gui不会运行，需要

1 个答案: