Java情人节动画人物表白代码加运行效果展示

以下是Java情人节动画人物表白代码，需要使用Java Swing库来实现：

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Valentine extends JFrame {
    private static final long serialVersionUID = 1L;
    private JPanel jContentPane = null; // 主面板
    private JPanel jStartPanel = null; // 开始面板
    private JPanel jHeartPanel = null; // 心形面板
    private JButton jStartButton = null; // 开始按钮
    private Image bgImage = null; // 背景图片
    private ImageIcon heartImage = null; // 心形图片
    private Timer timer = null; // 定时器
    private int heartX = 0; // 心形x坐标
    private int heartY = 0; // 心形y坐标
    private boolean isStart = false; // 是否启动动画

    /**
     * This is the default constructor
     */
    public Valentine() {
        super();
        initialize();
    }

    /**
     * 初始化界面
     */
    private void initialize() {
        this.setSize(400, 300);
        this.setContentPane(getJContentPane());
        this.setTitle("Happy Valentine's Day!");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setResizable(false);
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }

    /**
     * 获取主面板
     * 
     * @return JPanel
     */
    private JPanel getJContentPane() {
        if (jContentPane == null) {
            jContentPane = new JPanel();
            jContentPane.setLayout(new BorderLayout());
            jContentPane.add(getJStartPanel(), BorderLayout.CENTER);
        }
        return jContentPane;
    }

    /**
     * 获取开始面板
     * 
     * @return JPanel
     */
    private JPanel getJStartPanel() {
        if (jStartPanel == null) {
            jStartPanel = new JPanel() {
                private static final long serialVersionUID = 1L;

                // 重写paintComponent方法，实现自定义绘制
                public void paintComponent(Graphics g) {
                    super.paintComponent(g);
                    g.drawImage(bgImage, 0, 0, null);
                }
            };
            jStartPanel.setLayout(null);
            jStartPanel.add(getJStartButton());
        }
        return jStartPanel;
    }

    /**
     * 获取心形面板
     * 
     * @return JPanel
     */
    private JPanel getJHeartPanel() {
        if (jHeartPanel == null) {
            jHeartPanel = new JPanel() {
                private static final long serialVersionUID = 1L;

                // 重写paintComponent方法，实现自定义绘制
                public void paintComponent(Graphics g) {
                    super.paintComponent(g);
                    g.drawImage(bgImage, 0, 0, null);
                    g.drawImage(heartImage.getImage(), heartX, heartY, null);
                }
            };
            jHeartPanel.setLayout(null);
        }
        return jHeartPanel;
    }

    /**
     * 获取开始按钮
     * 
     * @return JButton
     */
    private JButton getJStartButton() {
        if (jStartButton == null) {
            jStartButton = new JButton();
            jStartButton.setBounds(140, 200, 120, 30);
            jStartButton.setText("Start");
            jStartButton.setFont(new Font("宋体", Font.BOLD, 14));
            jStartButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    jContentPane.remove(jStartPanel);
                    jContentPane.add(getJHeartPanel(), BorderLayout.CENTER);
                    jContentPane.repaint();
                    isStart = true;
                    timer = new Timer();
                    timer.schedule(new HeartTask(), 0, 50);
                }
            });
        }
        return jStartButton;
    }

    /**
     * 心形运动定时任务
     */
    class HeartTask extends TimerTask {
        public void run() {
            int width = jHeartPanel.getWidth();
            int height = jHeartPanel.getHeight();
            if (heartX == 0 && heartY == 0) {
                heartX = (width - heartImage.getIconWidth()) / 2;
                heartY = height - heartImage.getIconHeight();
            } else if (heartY > 0) {
                heartX = heartX + 2;
                heartY = heartY - 2;
            } else {
                isStart = false;
                timer.cancel();
                jContentPane.remove(jHeartPanel);
                jContentPane.add(getJStartPanel(), BorderLayout.CENTER);
                jContentPane.repaint();
            }
            jHeartPanel.repaint();
        }
    }

    /**
     * 主函数
     * 
     * @param args
     */
    public static void main(String[] args) {
        Valentine frame = new Valentine();
        frame.bgImage = Toolkit.getDefaultToolkit().getImage("bg.jpg");
        frame.heartImage = new ImageIcon("heart.png");
    }
}

其中，bg.jpg 和 heart.png 是需要自己准备的背景图片和心形图片，这里就不提供了。运行效果如下所示：