java计算机产生随机数，猜中即胜，猜不中，提示是大了还是小了，继续猜，直至猜到,给出所用时间和评语。 界面要示:用图形界面实现。并给出源代码

好的，下面是一个基于Java Swing库的猜数字游戏图形界面的实现。您可以在此基础上进行修改和优化。

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

public class GuessNumber extends JFrame implements ActionListener {
    private JLabel timeLabel;
    private JLabel resultLabel;
    private JTextField inputField;
    private JButton submitButton;
    private int target;
    private long startTime;

    public static void main(String[] args) {
        GuessNumber game = new GuessNumber();
        game.setVisible(true);
    }

    public GuessNumber() {
        super("猜数字游戏");

        // 生成随机数
        target = (int) (Math.random() * 100);

        // 设置窗口属性
        setSize(300, 200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        // 添加组件
        Container contentPane = getContentPane();
        contentPane.setLayout(new GridLayout(3, 1));

        timeLabel = new JLabel("用时：0秒");
        timeLabel.setHorizontalAlignment(SwingConstants.CENTER);
        contentPane.add(timeLabel);

        resultLabel = new JLabel("请输入猜测的数字（0-99）：");
        resultLabel.setHorizontalAlignment(SwingConstants.CENTER);
        contentPane.add(resultLabel);

        JPanel inputPanel = new JPanel();
        inputPanel.setLayout(new FlowLayout());

        inputField = new JTextField(10);
        inputPanel.add(inputField);

        submitButton = new JButton("提交");
        submitButton.addActionListener(this);
        inputPanel.add(submitButton);

        contentPane.add(inputPanel);

        // 开始计时
        startTime = System.currentTimeMillis();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        int guess;
        try {
            guess = Integer.parseInt(inputField.getText());
        } catch (NumberFormatException ex) {
            JOptionPane.showMessageDialog(this, "请输入正确的数字！", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }

        if (guess == target) {
            // 猜中了
            long duration = System.currentTimeMillis() - startTime;
            double seconds = duration / 1000.0;
            String message = String.format("恭喜您猜中了！用时%.1f秒。", seconds);
            JOptionPane.showMessageDialog(this, message, "胜利", JOptionPane.INFORMATION_MESSAGE);
            System.exit(0);
        } else if (guess < target) {
            // 猜小了
            resultLabel.setText("您猜的数字" + guess + "偏小，请继续猜测。");
        } else {
            // 猜大了
            resultLabel.setText("您猜的数字" + guess + "偏大，请继续猜测。");
        }
    }
}

运行结果：