标题一定要长.长.长.长.长.长.长.长.长.长.长.长.长.长.长.长.长.长,该如何处理

import java.awt.Dimension;import java.awt.Point;import java.awt.Toolkit;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.awt.event.WindowStateListener;import java.util.ArrayList;import java.util.List;import javax.imageio.ImageIO;import javax.swing.ImageIcon;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.SwingUtilities;import com.sun.awt.AWTUtilities;import java.awt.event.KeyAdapter;import java.awt.event.KeyEvent;public class FlowerRain extends JFrame {    private static final long serialVersionUID = -8037287523655159012L;    private int num = 99;// 花朵数量    private int speed = 3;// 下降速度    private boolean flag = true;    private List<JLabel> labelList = new ArrayList<JLabel>(num);    private Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();    private ImageIcon icon = new ImageIcon(ImageIO.read(this.getClass().getResourceAsStream("flower.gif")));// 花朵图片    public FlowerRain() throws Exception {        getContentPane().setLayout(null);        setTitle("漫天花雨");        setSize(screenSize);        setResizable(false);        setUndecorated(true);        setAlwaysOnTop(true);        setLocationRelativeTo(null);        setIconImage(icon.getImage());        AWTUtilities.setWindowOpaque(this, false);        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        // 防止最小化        addWindowStateListener(new WindowStateListener() {            public void windowStateChanged(WindowEvent e) {                if (getState() == 1) {                    setState(0);                }            }        });        // Ctrl + E 关闭窗口        addKeyListener(new KeyAdapter() {            public void keyPressed(KeyEvent e) {                if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_E) {                    dispatchEvent(new WindowEvent(FlowerRain.this, WindowEvent.WINDOW_CLOSING));                }            }        });        addWindowListener(new WindowAdapter() {            @Override            public void windowClosing(WindowEvent e) {                flag = false;// 将线程循环标志置为false            }        });        for (int i = 0; i < num; i++) {            JLabel jlbl = new JLabel(icon);            jlbl.setSize(20, 20);            jlbl.setLocation(random(screenSize.width), random(screenSize.height));            labelList.add(jlbl);            add(jlbl);        }    }    public void move() {        new Thread() {            public void run() {                while (flag) {                    try {                        SwingUtilities.invokeLater(new Runnable() {                            public void run() {                                for (int i = 0; i < labelList.size(); i++) {                                    JLabel jlbl = labelList.get(i);                                    Point location = jlbl.getLocation();                                    jlbl.setLocation(location.x + (i % 5 - 2), location.y + speed);                                    location = jlbl.getLocation();                                    if (location.y >= screenSize.height || location.x <= 0 || location.x >= screenSize.width) {                                        jlbl.setLocation(random(screenSize.width), 0);                                    }                                }                            }                        });                        Thread.sleep(100);                    } catch (Exception e) {                        e.printStackTrace();                    }                }            };        }.start();    }    public void start() {        SwingUtilities.invokeLater(new Runnable() {            public void run() {                try {                    setVisible(true);                    move();                } catch (Exception e) {                    e.printStackTrace();                }            }        });    }    public int random(int max) {        return (int) (Math.random() * max);    }    public int random(int min, int max) {        return random(max - min) + min;    }    public static void main(String[] args) throws Exception {        new FlowerRain().start();    }}