怎樣用java 程序?qū)懸粋€時鐘程序

面向?qū)ο笏枷雽懗桑?/p>

創(chuàng)新互聯(lián)基于分布式IDC數(shù)據(jù)中心構(gòu)建的平臺為眾多戶提供成都溫江機房 四川大帶寬租用 成都機柜租用 成都服務(wù)器租用。

下面是一個顯示器類

public?class?Display?{

private?int?value;//現(xiàn)在的值

private?int?limit;//上限值

Display(?int?limit)?{

this.limit?=?limit;

}

public?void?increase()?{

value++;

if(value?==?limit)?{

value?=?0;

}

}

public?int?getValue()?{

return?value;

}

public?static?void?main(String[]?args)?{

Display?d?=?new?Display(24);

for(;;)?{

d.increase();

System.out.println(d.getValue());

}

}

}

下面創(chuàng)建一個時鐘對象：

public?class?Clock?{

private?Display?h?=?new?Display(24);

private?Display?min?=?new?Display(60);

private?Display?s?=?new?Display(60);

public?void?start?()?{

for(;;)?{

s.increase();

if(s.getValue()?==?0){//如果分重置，小時+1

min.increase();

if(min.getValue()?==?0){//如果分重置，小時+1

h.increase();

}

}

System.out.printf("%02d:%02d:%02d\n",h.getValue(),?min.getValue(),s.getValue());//格式輸出

}

}

public?static?void?main(String[]?args)?{

Clock?clock?=?new?Clock();

clock.start();

}

JAVA畫時鐘代碼

import?java.awt.*;

import?java.awt.event.*;

import?javax.swing.*;

import?sun.util.calendar.Gregorian;

import?java.util.Calendar;

import?java.util.GregorianCalendar;

public?class?ClockPointer?extends?JFrame{

int?x,?y,?x0,?y0,?r,?h,?olds_x,?olds_y,?oldm_x,?oldm_y,?oldh_x,?oldh_y,?

ss,mm,?hh,?old_m,?old_h,?ang;

final?double?RAD?=?Math.PI/180;

public?ClockPointer(){

super("Java時鐘");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Image?image?=?getToolkit().getImage("clock.gif");

setIconImage(image);

setSize(400,400);

setBackground(Color.white);

//setLocation(300,150);

this.setLocationRelativeTo(null);

setResizable(true);

int?delay?=?1000;

//創(chuàng)建一個監(jiān)聽事件

setVisible(true);

ActionListener?drawClock?=?new?ActionListener(){

public?void?actionPerformed(ActionEvent?evt){

repaint();

}

};

//創(chuàng)建一個時間計數(shù)器，每一秒觸發(fā)一次

new?Timer(delay,?drawClock).start();

}

java.text.SimpleDateFormat?fmTime?=?new?java.text.SimpleDateFormat("HH:mm:ss");

//繪制圖形

public?void?paint(Graphics?g){

super.paint(g);

g.setFont(null);

Graphics2D?g2D?=?(Graphics2D)g;

Insets?insets?=?getInsets();

int?L?=?insets.left/2,?T?=?insets.top/2;

h?=?getSize().height;

g.setColor(Color.white);

//畫圓

g2D.setStroke(new?BasicStroke(2.0f));

g.setColor(Color.gray);

g.drawOval(L+40,?T+40,?h-80,?h-80);

r?=?h/2?-?40;

x0?=?40?+?r?-?5?+?L;

y0?=?40?+?r?-?5?-?T;

ang?=?60;

//繪制時鐘上的12個字

for(int?i?=?1;i?=?12;i?++){

x?=?(int)((r+10)*Math.cos(RAD*ang)+x0);

y?=?(int)((r+10)*Math.sin(RAD*ang)+y0);

g.setColor(Color.black);

g.drawString(""+i,?x,?h-y);

ang?-=30;

}

//獲得現(xiàn)在的時間

Calendar?now?=?new?GregorianCalendar();

int?nowh?=?now.get(Calendar.HOUR_OF_DAY);

int?nowm?=?now.get(Calendar.MINUTE);

int?nows?=?now.get(Calendar.SECOND);

String?st=fmTime.format(now.getTime());

//在窗體上顯示時間

g.setColor(Color.pink);

g.fillRect(L,?T,?50,?28);

g.setColor(Color.blue);

g.drawString(st,L+2,T+26);

//計算時間與度數(shù)的關(guān)系

ss?=?90?-?nows*6;

mm?=?90?-?nowm*6;

hh?=?90?-?nowh*30?-?nowm/2;

x0?=?r+40+L;

y0?=?r+40+T;

g2D.setStroke(new?BasicStroke(1.2f));

//擦除秒針

//if(olds_x??0){

//????g.setColor(getBackground());

//????//?g.setColor(Color.gray);

//????g.drawLine(x0,?y0,?olds_x,?h-olds_y);?//?(?)

//}

//繪制秒針

x?=?(int)(r*0.9*Math.cos(RAD*ss))+x0;

y?=?(int)(r*0.9*Math.sin(RAD*ss))+y0-2*T;

g.setColor(Color.yellow);

g.drawLine(x0,?y0,?x,?h-y);

olds_x?=?x;

olds_y?=?y;

g2D.setStroke(new?BasicStroke(2.2f));

//擦除分針

//if(old_m!=mm){

//????g.setColor(getBackground());

//????g.drawLine(x0,y0,oldm_x,h-oldm_y);

//}

//繪制分針

x?=?(int)(r*0.7*Math.cos(RAD*mm))+x0;

y?=?(int)(r*0.7*Math.sin(RAD*mm))+y0-2*T;

g.setColor(Color.green);

g.drawLine(x0,y0,x,h-y);

oldm_x?=?x;

oldm_y?=?y;

old_m?=?mm;

g2D.setStroke(new?BasicStroke(3.2f));

//擦除時針

//if(old_h!=hh){

//????g.setColor(getBackground());

//????g.drawLine(x0,y0,oldh_x,h-oldh_y);

//}

//繪制時針

x?=?(int)(r*0.5*Math.cos(RAD*hh))+x0;

y?=?(int)(r*0.5*Math.sin(RAD*hh))+y0-2*T;

g.setColor(Color.red);

g.drawLine(x0,y0,x,h-y);

oldh_x?=?x;

oldh_y?=?y;

old_h?=?hh;

}

public?static?void?main(String[]?args){

new?ClockPointer();

}

}

//整理一下

java編程利用按鈕實現(xiàn)時鐘的停止和開始功能（原代碼）

如下：

import?java.awt.*;

import?java.awt.event.*;

import?javax.swing.JButton;

import?javax.swing.JFrame;

import?javax.swing.JPanel;

import?javax.swing.Timer;

import?java.awt.geom.*;

import?java.util.*;

class?Clock?extends?Canvas

implements?ActionListener{

static??JButton?jb=new?JButton("開始");

static?JButton?jb1=new?JButton("暫停");

Date?date;

Timer?secondTime;

int?hour,munite,second;

Line2D?secondLine,muniteLine,hourLine;

int?a,b,c;

double?pointSX[]=new?double[60],//用來表示秒針端點坐標的數(shù)組

pointSY[]=new?double[60],

pointMX[]=new?double[60],?//用來表示分針端點坐標的數(shù)組

pointMY[]=new?double[60],

pointHX[]=new?double[60],?//用來表示時針端點坐標的數(shù)組

pointHY[]=new?double[60];

Clock()

{?secondTime=new?Timer(1000,this);

pointSX[0]=0;?????????????????????????//12點秒針位置

pointSY[0]=-100;

pointMX[0]=0;?????????????????????????//12點分針位置

pointMY[0]=-90;

pointHX[0]=0;?????????????????????????//12點時針位置

pointHY[0]=-70;

double?angle=6*Math.PI/180;??????????//刻度為6度

for(int?i=0;i59;i++)????????????????//計算出各個數(shù)組中的坐標

{?pointSX[i+1]=pointSX[i]*Math.cos(angle)-Math.sin(angle)*pointSY[i];

pointSY[i+1]=pointSY[i]*Math.cos(angle)+pointSX[i]*Math.sin(angle);

pointMX[i+1]=pointMX[i]*Math.cos(angle)-Math.sin(angle)*pointMY[i];

pointMY[i+1]=pointMY[i]*Math.cos(angle)+pointMX[i]*Math.sin(angle);

pointHX[i+1]=pointHX[i]*Math.cos(angle)-Math.sin(angle)*pointHY[i];

pointHY[i+1]=pointHY[i]*Math.cos(angle)+pointHX[i]*Math.sin(angle);

}

for(int?i=0;i60;i++)

{?pointSX[i]=pointSX[i]+120;????????????//坐標平移

pointSY[i]=pointSY[i]+120;

pointMX[i]=pointMX[i]+120;????????????//坐標平移

pointMY[i]=pointMY[i]+120;

pointHX[i]=pointHX[i]+120;????????????//坐標平移

pointHY[i]=pointHY[i]+120;

}

secondLine=new?Line2D.Double(0,0,0,0);

muniteLine=new?Line2D.Double(0,0,0,0);

hourLine=new?Line2D.Double(0,0,0,0);

secondTime.start();????????//秒針開始計時

}

public?void?paint(Graphics?g)

{???for(int?i=0;i60;i++)?????//繪制表盤上的小刻度和大刻度

{??int?m=(int)pointSX[i];

int?n=(int)pointSY[i];

if(i%5==0)

{?g.setColor(Color.red);

g.fillOval(m-4,n-4,8,8);

}

else

{?g.setColor(Color.cyan);

g.fillOval(m-2,n-2,4,4);

}

}

g.fillOval(115,115,10,10);??//鐘表中心的實心圓

Graphics2D?g_2d=(Graphics2D)g;

g_2d.setColor(Color.red);

g_2d.draw(secondLine);

BasicStroke?bs=

new?BasicStroke(3f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_MITER);

g_2d.setStroke(bs);

g_2d.setColor(Color.blue);

g_2d.draw(muniteLine);

bs=new?BasicStroke(6f,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER);

g_2d.setStroke(bs);

g_2d.setColor(Color.green);

g_2d.draw(hourLine);

}

public?void?actionPerformed(ActionEvent?e)

{?if(e.getSource()==secondTime){

date=new?Date();

String?s=date.toString();

hour=Integer.parseInt(s.substring(11,13));

munite=Integer.parseInt(s.substring(14,16));

second=Integer.parseInt(s.substring(17,19));?//獲取時間中的秒

int?h=hour%12;

a=second;????????????????????//秒針端點的坐標

b=munite;????????????????????//分針端點的坐標

c=h*5+munite/12;?????????????//時針端點的坐標

secondLine.setLine(120,120,(int)pointSX[a],(int)pointSY[a]);

muniteLine.setLine(120,120,(int)pointMX[b],(int)pointMY[b]);

hourLine.setLine(120,120,(int)pointHX[c],(int)pointHY[c]);

repaint();

}?if(e.getSource()==jb){

?secondTime.start();

}if(e.getSource()==jb1){

?secondTime.stop();

}

}

public?static?void?main(String?args[]){

?JFrame?win=new?JFrame("時鐘");

?JPanel?jp=new?JPanel();

?jp.add(jb);

?jp.add(jb1);

?Clock?clock=new?Clock();

?jb.addActionListener(clock);

?jb1.addActionListener(clock);

?win.add(clock,BorderLayout.CENTER);

?win.add(jp,"South");

?win.setVisible(true);

?win.setSize(246,300);

?win.setDefaultCloseOperation(3)?;

?win.validate();

???}

}

運行截圖：

有問題就追問，滿意請采納。