Java实现滚动字幕

Java实现滚动字幕

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Calendar;import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;public class Demo extends JFrame
{/*** */private static final long serialVersionUID = 1L;public Demo(){Font font1 = new Font("幼圆", Font.BOLD, 16);Calendar cal = Calendar.getInstance();SimpleDateFormat formatter = new SimpleDateFormat("EEEE,MMMMdd日，yyyy年 HH:mm:ss");String mDateTime = formatter.format(cal.getTime());MovingMessagePanel messagePanel = new MovingMessagePanel(mDateTime);messagePanel.setFont(font1);messagePanel.setBackground(Color.BLACK);messagePanel.setForeground(Color.PINK);add(messagePanel);}public static void main(String[] args){Demo frame = new Demo();JLabel label = new JLabel("开始调试时间：X月X日     结束调试时间：X月X日");label.setBackground(Color.black);frame.setTitle("走马灯");frame.setLocationRelativeTo(null);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(320, 120);frame.setVisible(true);frame.add(label, BorderLayout.SOUTH);}static class MovingMessagePanel extends JPanel{/*** */private static final long serialVersionUID = 1L;private String message = " ";private int xCoordinate = 0;private int yCoordinate = 40;public MovingMessagePanel(String message){this.message = message;Timer timer = new Timer(100, new TimerListener());timer.start();}public void paintComponent(Graphics g){super.paintComponent(g);if (xCoordinate > getWidth()){xCoordinate = -100;}xCoordinate += 5;g.drawString(message, xCoordinate, yCoordinate);}class TimerListener implements ActionListener{public void actionPerformed(ActionEvent e){repaint();}}}
}

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