java-clock.rar_Java 小程序_clock_java clock

import java.applet.*; import java.awt.*; import java.util.*; import java.text.*; import java.net.*; import java.awt.image.*; class RotateG { private Graphics g; private int ox = 0; private int oy = 0; private double radians = 0.0; private double cos = 1.0; private double sin = 0.0; public RotateG(Graphics g) { this.g = g.create(); } public void setOrigin(int x, int y) { ox = x; oy = y; } public void setAngle(double a) { radians = (a * Math.PI) / 180; cos = Math.cos(radians); sin = Math.sin(radians); } public void setColor(Color c) { g.setColor(c); } public int rotate_x(int x, int y) { return ((int) (ox + x * cos - y * sin)); } public int rotate_y(int x, int y) { return ((int) (oy + y * cos + x * sin)); } public void drawLine(int x1, int y1, int x2, int y2) { g.drawLine(rotate_x(x1, y1), rotate_y(x1, y1), rotate_x(x2, y2), rotate_y(x2, y2)); } public void drawOval(int x, int y, int width, int height) { g.drawOval(x,y,width,height); } public void fillOval(int x, int y, int width, int height) { g.fillOval(x,y,width,height); } public void drawPolygon(int x[], int y[], int n) { int new_x[] = new int[n]; int new_y[] = new int[n]; for (int i = 0; i < n; i++) { new_x[i] = rotate_x(x[i], y[i]); new_y[i] = rotate_y(x[i], y[i]); } g.drawPolygon(new_x, new_y, n); } public void fillPolygon(int x[], int y[], int n) { int new_x[] = new int[n]; int new_y[] = new int[n]; for (int i = 0; i < n; i++) { new_x[i] = rotate_x(x[i], y[i]); new_y[i] = rotate_y(x[i], y[i]); } g.fillPolygon(new_x, new_y, n); } public void drawImage(Image img,int x, int y,ImageObserver observer) { g.drawImage(img,x,y,observer); } } public class Clock extends Applet implements Runnable { private Date date; private int iHour,iMinute,iSecond; private Thread thread = null; private Image offI,backG; private Graphics offG; private int ixHour[]={4,4,0,-4,-4} ,iyHour[]={0,-30,-35,-30,0} ,ixMinute[]={3,3,0,-3,-3} ,iyMinute[]={0,-45,-50,-45,0}; public void init() { this.setLayout(null); date = new Date(); SimpleDateFormat df = new SimpleDateFormat("'现在时刻' hh:mm:ss"); String lasttime = df.format(date); offI = createImage(300,300); offG = offI.getGraphics(); backG = getImage(getCodeBase(),"Clock.jpg"); } public void start() { if(thread == null) { thread = new Thread(this); thread.start(); } } public void run() { RotateG g = new RotateG(offG); while(true) { try { thread.sleep(1000); date = new Date(); SimpleDateFormat df = new SimpleDateFormat("'现在时刻' hh:mm:ss"); String lasttime = df.format(date); System.out.println(lasttime); iSecond = date.getSeconds(); iMinute = date.getMinutes(); iHour = date.getHours(); offG.setColor(Color.white); offG.fillRect(0,0,300,300); g.setOrigin(0,0); g.drawImage(backG,0,0,this); g.setOrigin(107,107); System.out.println(iHour); g.setAngle(iHour*30+iMinute*0.5); g.setColor(Color.green); g.fillPolygon(ixHour,iyHour,5); g.setAngle(iMinute*6); g.setColor(Color.red); g.fillPolygon(ixMinute,iyMinute,5); g.setAngle(iSecond*6); g.setColor(Color.blue); g.drawLine(0,0,0,-65); g.setColor(Color.black); g.fillOval(102,102,10,10); repaint(); } catch(InterruptedException e){} } } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { g.drawImage(offI,0,0,this); } }