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845天前import javax.swing.*; |
import java.awt.*; |
import java.util.*; |
import java.lang.Thread; |
import java.text.DecimalFormat; |
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public class DongClock extends JPanel { |
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/** |
* @param args |
*/ |
private int hour; |
private int minute; |
private int second; |
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//构造函数 |
public DongClock() { |
setCurrentTime(); |
} |
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//返回小时 |
public int getHour() { |
return hour; |
} |
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public int getMinute() { |
return minute; |
} |
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public int getSecond() { |
return second; |
} |
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//绘制时钟 |
protected void paintComponent(Graphics g) { |
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super.paintComponent(g); |
//初始化 |
int clockRadius = (int)(Math.min(getWidth(), getHeight()) * 0.8 * 0.5); |
int xCenter = getWidth() / 2; |
int yCenter = getHeight() / 2; |
//画圆 |
g.setColor(Color.black); |
g.drawOval(xCenter - clockRadius, yCenter - clockRadius, 2 * clockRadius, 2 * clockRadius); |
g.drawString("12", xCenter - 5, yCenter - clockRadius + 15); |
g.drawString("9", xCenter - clockRadius + 3, yCenter + 5); |
g.drawString("3", xCenter + clockRadius - 10, yCenter + 3); |
g.drawString("6", xCenter - 3, yCenter + clockRadius - 3); |
//画秒针 |
int sLength = (int)(clockRadius * 0.8); |
int xSecond = (int)(xCenter + sLength * Math.sin(second * (2 * Math.PI / 60))); |
int ySecond = (int)(yCenter - sLength * Math.cos(second * (2 * Math.PI / 60))); |
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g.setColor(Color.red); |
g.drawLine(xCenter, yCenter, xSecond, ySecond); |
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//画分针 |
int mLenth = (int)(clockRadius * 0.65); |
int xMinute = (int)(xCenter + mLenth * Math.sin(minute * (2 * Math.PI / 60))); |
int yMinute = (int)(xCenter - mLenth * Math.cos(minute * (2 * Math.PI / 60))); |
g.setColor(Color.blue); |
g.drawLine(xCenter, yCenter, xMinute, yMinute); |
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//画时针 |
int hLength = (int)(clockRadius * 0.5); |
int xHour = (int)(xCenter + hLength * Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI / 12))); |
int yHour = (int)(yCenter - hLength * Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI / 12))); |
g.setColor(Color.green); |
g.drawLine(xCenter, yCenter, xHour, yHour); |
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//画数字时钟 |
g.setColor(Color.black); |
DecimalFormat s=new DecimalFormat("00"); |
g.drawString(s.format(getHour()) + ":" + s.format(getMinute()) + ":" + s.format(getSecond()), xCenter - 22, yCenter - clockRadius - 15); |
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} |
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public void setCurrentTime() { |
Calendar calendar = new GregorianCalendar(); |
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this.hour = calendar.get(Calendar.HOUR_OF_DAY); |
this.minute = calendar.get(Calendar.MINUTE); |
this.second = calendar.get(Calendar.SECOND); |
} |
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public static void main(String[] args) { |
// TODO Auto-generated method stub |
JFrame frame = new JFrame("DiaplayClock"); |
frame.setResizable(false); |
frame.setTitle("DiaplayClock"); |
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); |
frame.setSize(300,350); |
frame.setVisible(true); |
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while(true) { |
DongClock clock = new DongClock(); |
frame.getContentPane().add(clock); |
clock.setVisible(true); |
frame.validate(); |
try { |
Thread.sleep(1000); |
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} |
catch (InterruptedException e) { |
e.printStackTrace(); |
} |
clock.setVisible(false); |
frame.remove(clock); |
clock = null; |
frame.validate(); |
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} |
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} |
} |
