时钟的界面良好

1、时钟的界面良好，简洁实用性强，实现程序与电脑的时间的同步。可以显示始终，也可以显示分针秒针，并可以在相应的位置调整时间。而且初始运行会与电脑的时间校对，一般默认为同步，但还可以自己再次调节，提高实用性。本系统共包括 1 个 java 源文件。1、Clock 源文件是本程序的主函数其作用是初始化棋盘。2、 setCurrentTime 源文件实现电脑设置时间。3、 paintHourPointer 源文件为时针.4、 paintSecondPointer 源文件实现人与电脑设置秒针.5、 paintMinuteDot 源文件人与电脑设置分针. Clock 成员变量 ： 成员变量描述 变量类型 名

2、称 时针 String Hour 分针 String Minute 秒针 String Second 时间点 TextField text_1 Clock 方法 ： 方法名 功能 备注 setCurrentTime 设置当前时间 构造方法 paintHourPointer 设置时针 接口方法 paintSecondPointer 设置秒针 接口方法 paintMinuteDot 设置分针 接口方法 actionPerformed 事件处理 run 程序运行 详细设计如下import java.awt.*; import java.awt.geom.Ellipse2D; import java.

3、awt.geom.GeneralPath; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.util.Calendar; import java.util.Date; import javax.swing.BorderFactory; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.UIManager; public class Clock extends JComponent priva

4、te static final Color INTEGRAL_COLOR = new Color(0, 128, 128); private int radius; private Calendar currentTime = Calendar.getInstance(); private double s = 0.03; public Clock(int radius) this.radius = radius; public void setCurrentTime(Date time) /设置当前时间 this.currentTime.setTime(time); public void

5、setCurrentTime(long millis) this.currentTime.setTimeInMillis(millis); public Dimension getPreferredSize() Insets insets = getInsets(); int r = (int) (radius = -1 ? 0 : radius*(1+s)+1; return new Dimension(r * 2 + insets.left + insets.right,r * 2 + insets.top + insets.bottom); /返回一个指定宽、高的 Dimension p

6、rotected void paintComponent(Graphics g) super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Insets insets = getInsets(); int wid = getWidth() - insets.left - insets.right; int hei = getHeight() - insets.

7、top - insets.bottom; int r = (int) (Math.min(wid, hei) / 2 / (1+s); g2d.translate(insets.left + r * (1+s), insets.top + r * (1+s); g2d.scale(1, -1); for (int i = 0; i < 60; i+) int angle = 90 - i * 6; double pos = calcPos(r, angle); paintMinuteDot(r, g2d, pos0, pos1, i % 5 = 0); paintHourPointer(

8、r, g2d); paintMinutePointer(r, g2d); paintSecondPointer(r, g2d); paintCenterPoint(g2d); g2d.scale(1, -1); g2d.translate(-insets.left - r * (1+s), -insets.top - r * (1+s); private void paintCenterPoint(Graphics2D g2d) g2d.setColor(Color.BLUE); Rectangle2D rect = new Rectangle2D.Double(-2, -2, 4, 4);

9、g2d.fill(rect); private void paintMinutePointer(int r, Graphics2D g2d) int minute = currentTime.get(Calendar.MINUTE); int second = currentTime.get(Calendar.SECOND); double angle = 90 - (minute + second / 60.0) * 6; Shape pointerShape = createPointerShape(r * 0.8, r * 0.04, r * 0.08, angle); g2d.setC

10、olor(Color.LIGHT_GRAY); g2d.fill(pointerShape); g2d.setColor(Color.DARK_GRAY); g2d.draw(pointerShape); private void paintHourPointer(int r, Graphics2D g2d) int hour = currentTime.get(Calendar.HOUR); int minute = currentTime.get(Calendar.MINUTE); int second = currentTime.get(Calendar.SECOND); double

11、angle = 90 - (hour + minute / 60.0 + second / 3600.0) * 30; Shape pointerShape = createPointerShape(r * 0.6, r * 0.06, r * 0.1, angle); g2d.setColor(Color.LIGHT_GRAY); g2d.fill(pointerShape); g2d.setColor(Color.DARK_GRAY); g2d.draw(pointerShape); private Shape createPointerShape(double r1, double r2

12、, double r3, double angle) GeneralPath gp = new GeneralPath(); double pos = calcPos(r1, angle); double pos1 = calcPos(r2, angle + 90); gp.append(new Line2D.Double(pos0, pos1, pos10, pos11), true); double pos2 = calcPos(r3, angle + 180); gp.lineTo(float)pos20, (float)pos21); double pos3 = calcPos(r2,

13、 angle + 270); gp.lineTo(float)pos30, (float)pos31); gp.closePath(); return gp; private void paintSecondPointer(int r, Graphics2D g2d) g2d.setColor(Color.BLACK); int second = currentTime.get(Calendar.SECOND); int angle = 90 - second * 6; double pos = calcPos(r * 0.9, angle); double pos1 = calcPos(r

14、* 0.2, angle + 180); Line2D line = new Line2D.Double(pos10, pos11, pos0, pos1); g2d.draw(line); private void paintMinuteDot(int r, Graphics2D g2d, double x, double y, boolean flag) g2d.setColor(flag ? Color.RED : Color.BLACK); if (flag) /Rectangle2D rect = new Rectangle2D.Double( Ellipse2D rect = ne

15、w Ellipse2D.Double( x - r * s, y - r * s, r * s * 2, r * s * 2); g2d.fill(rect); else /Rectangle2D rect = new Rectangle2D.Double( Ellipse2D rect = new Ellipse2D.Double( x - r * 0.02, y - r * 0.02, r * 0.04, r * 0.04); g2d.fill(rect); private double calcPos(double r, double angle) double radian = Mat

16、h.toRadians(angle); double x = r * Math.cos(radian); double y = r * Math.sin(radian); return new double x, y; public static void main(String args) try UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName(); catch (Exception e) e.printStackTrace(); final Clock clock = new Clock(50); clock

17、.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10); JFrame f = new JFrame( "软件 081 班 071404011 孙庆贺 "); /f.setBounds(380,200,500,600); f.getContentPane().add(clock, BorderLayout.CENTER); f.pack(); f.setLocationRelativeTo(null); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.set

18、Visible(true); new Thread() public void run() while (true) try Thread.sleep(1000); catch (InterruptedException ex) ex.printStackTrace(); clock.setCurrentTime(System.currentTimeMillis(); clock.repaint(); .start(); int y1 = (int)(r - 10) * Math.cos(rad * s); g.drawLine(x + r, y + r, x + r + x1, y + r

19、- y1); /分针 g.setColor(Color.BLUE); x1 = (int)(r - r / 2.5) * Math.sin(rad * m); y1 = (int)(r - r / 2.5) * Math.cos(rad * m); g.drawLine(x + r, y + r, x + r + x1, y + r - y1); /时针 g.setColor(Color.CYAN); x1 = (int)(r - r / 1.5) * Math.sin(rad * h); y1 = (int)(r - r / 1.5) * Math.cos(rad * h); g.drawL

20、ine(x + r, y + r, x + r + x1, y + r - y1); /数字 g.setColor(Color.YELLOW); int d = 29; for (int i = 1; i <= 12; i+) x1 = (int)(r - 10) * Math.sin(rad * d); y1 = (int)(r - 10) * Math.cos(rad * d); g.drawString(i + "", x + r + x1 - 4, x + r - y1 + 5); d+=30; /小点 d = 0; for (int i = 0; i <

21、; 60; i+) x1 = (int)(r - 2) * Math.sin(rad * d); y1 = (int)(r - 2) * Math.cos(rad * d); g.drawString(".", x + r + x1 - 1, x + r - y1 + 1); d+=6; /显示时间 Calendar now1 = new GregorianCalendar(); g.drawString(now1.get(Calendar.HOUR_OF_DAY) + " ： " + now1.get(Calendar.MINUTE) + "

22、：" + now1.get(Calendar.SECOND), 0, 10); public void run() while (true) try Thread.sleep(1000); catch (Exception ex) s+=6; if (s >= 360) s = 0; m+=6; if (m = 72 | m = 144 | m = 216 | m = 288) h+=6; if (m >= 360) m = 0; h+=6; if (h >=360) h = 0; this.repaint(); int x, y, r; int h, m, s;/

23、小时，分钟，秒 double rad = Math.PI / 180; public ClockPaint(int x, int y, int r) this.x = x; this.y = y; this.r = r; Calendar now = new GregorianCalendar(); s = now.get(Calendar.SECOND) * 6;/获得秒转换成度数 m = now.get(Calendar.MINUTE) * 6;/获得分钟 h = (now.get(Calendar.HOUR_OF_DAY) - 12) * 30 + now.get(Calendar.MI

24、NUTE) / 12 * 6;/获得小时 Thread t = new Thread(this); t.start(); public void paint(Graphics g) /清屏 super.paint(g); g.setColor(Color.BLACK); g.fillRect(0, 0, r * 3, r * 3); /画圆 g.setColor(Color.WHITE); g.drawOval(x, y, r * 2, r * 2); /秒针 g.setColor(Color.RED); int x1 = (int)(r - 10) * Math.sin(rad * s);

25、/定义 MyTimer 类 class MyTimer1 extends JFrame static int count=0; /判断是否重定义了时间 /构造函数 public MyTimer1() /定义窗口大小 setSize(320, 200); /定义窗口标题 setTitle("测试自定义时钟类！"); Container c = getContentPane(); / new ClockCanvas("北京时间", "GMT+8") c.add(new ClockCanvas("北京时间", "

26、;GMT+8"); /定义接口 interface TimerListener1 void timeElapsed(Timer1 t); class Timer1 extends Thread /类 Timer1 private TimerListener1 target; private int interval; public Timer1(int i, TimerListener1 t) target = t; interval = i; setDaemon(true); public void run() try while (!interrupted() sleep(int

27、erval); target.timeElapsed(this); catch(InterruptedException e) class ClockCanvas extends JPanel /clockcanvas implements TimerListener1 static int seconds = 0; private String city; private GregorianCalendar calendar; /构造函数 public ClockCanvas(String c, String tz) city = c; calendar = new GregorianCal

28、endar(TimeZone.getTimeZone(tz); Timer1 t = new Timer1(1000, this); t.start(); setSize(180, 180); /绘制钟面 public void paintComponent(Graphics g) super.paintComponent(g); g.drawOval(100, 5, 120, 120); g.drawOval(101, 6, 118, 118); /分离时间 double hourAngle = 2 * Math.PI * (seconds - 3 * 60 * 60) / (12 * 60

29、 * 60); double minuteAngle = 2 * Math.PI * (seconds - 15 * 60) / (60 * 60); double secondAngle = 2 * Math.PI * (seconds - 15) / 60; public void timeElapsed(Timer1 t) calendar.setTime(new Date(); if(MyTimer1.count=1) int a=1; seconds=MyTHour*60*60+MyTMinute*60+MyTSecond; seconds+=a;/a 为秒自加 repaint(); else seconds = calendar.get(Calendar.HOUR) * 60 * 60 + calendar.get(Calendar.MINUTE) * 60 + calendar.get(Calendar.SECOND); repaint(); /定义时钟类 class MyTimer implements TimerListener /定义时钟类的属性 static int intHour,intMinute,intSecond;/构造函数 public MyTimer() setCurren