fourclocks.java

一个JAVA编的一个时钟..不同国家的时钟.还有国家的国旗

import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.text.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;

public class FourClocks extends JFrame implements Runnable, ActionListener
{
	private volatile Thread timer,timer2,timer3,timer4;
	
	//设置4个钟的时针 分针 秒针的坐标
	private int clockxs=0, clockys=0, clockxm=0,
                clockym=0, clockxh=0, clockyh=0,
                clockxs2=0, clockys2=0, clockxm2=0,
                clockym2=0, clockxh2=0, clockyh2=0,
                clockxs3=0, clockys3=0, clockxm3=0,
                clockym3=0, clockxh3=0, clockyh3=0,
                clockxs4=0, clockys4=0, clockxm4=0,
                clockym4=0, clockxh4=0, clockyh4=0,
                datenum=0;  
    private SimpleDateFormat formatter,formatter2,formatter3,formatter4;  // 时间格式
    private String lastdate,lastdate2, lastdate3, lastdate4, date = "";             // 在每个钟的下方设置的数字时间
    private Font clockFaceFont;          // 时钟的字体
    private Date currentDate;            // 用于输出的日期字体
    private Color handColor,handColor1, handColor2,handColor3,handColor4;             // 表盘以及指针的颜色
    private Color numberColor;           // 数字以及秒针的颜色
    private int xcenter = 200, ycenter = 150,
    			xcenter2 = 450, ycenter2 = 150,
    			xcenter3 = 200, ycenter3 = 350,
    			xcenter4 = 450, ycenter4 = 350; // 4个表盘的坐标
    private JButton buttons1,buttons2,buttons3,buttons4; //4个国家的按钮
    			
	
	public FourClocks()
	{
		super("世界各时区时钟");
		
		timer = new Thread(this); //定义线程
	        
        formatter = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", Locale.getDefault()); //世界格式及输出语言
        formatter2 = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", Locale.getDefault());
        formatter3 = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", Locale.getDefault());
        formatter4 = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", Locale.getDefault());
        
        currentDate = new Date();
        lastdate = formatter.format(currentDate);
        lastdate2 = formatter2.format(currentDate);
        lastdate3 = formatter3.format(currentDate);
        lastdate4 = formatter4.format(currentDate);
        
        TimeZone tz = TimeZone.getDefault();//本地时区
        formatter.setTimeZone( tz );
        
        TimeZone tz2 = TimeZone.getTimeZone("America/Los_Angeles");//美国洛杉矶时间
        formatter2.setTimeZone( tz2 );
        
        TimeZone tz3 = TimeZone.getTimeZone("Europe/London");//伦敦时间
        formatter3.setTimeZone( tz3 );
        
        TimeZone tz4 = TimeZone.getTimeZone("Japan/Tokyo");//东京时间
        formatter4.setTimeZone( tz4 );
        
        clockFaceFont = new Font("Serif", Font.PLAIN, 14);
        handColor = handColor1 = handColor2 = handColor3 = handColor4 = Color.blue;//开始时所有的钟为蓝色表盘
        numberColor = Color.darkGray;
        
        Container container = getContentPane();
		container.setLayout( new FlowLayout() );
		Icon image1=new ImageIcon("China.jpg");
  		Icon image2=new ImageIcon("American.jpg");
  		Icon image3=new ImageIcon("Jpan.jpg");
  		Icon image4=new ImageIcon("English.jpg");
  		
		buttons1 = new JButton("亚洲/上海");
  		buttons1.setIcon(image1);
		buttons1.addActionListener( this );
		container.add( buttons1 );
        
        buttons2 = new JButton("北美洲/纽约");
        buttons2.setIcon(image2);
        buttons2.addActionListener( this );
		container.add( buttons2 );
		
		buttons3 = new JButton("亚洲/日本");
  		buttons3.setIcon(image3);
		buttons3.addActionListener( this );
		container.add( buttons3 );
		
		buttons4 = new JButton("欧洲/伦敦");
  		buttons4.setIcon(image4);
		buttons4.addActionListener( this );
		container.add( buttons4 );
		
		
		
		setSize( 700, 500 );
		setVisible( true );
		
	}
	
	public void actionPerformed( ActionEvent actionEvent ) //按钮监听器
	{
		currentDate = new Date();
		Object choice = actionEvent.getSource();
		if( choice == buttons1 )//本地时间（北京时间）
		{
			handColor1 = Color.red; //设置与按钮对应的时钟的颜色为红色 其他为蓝色
			handColor2 = Color.blue;
			handColor3 = Color.blue;
			handColor4 = Color.blue;
			
			formatter.applyPattern(" yyyy MMM dd EEE HH:mm:ss "); //立刻在程序下方输出时间的具体信息
			date = formatter.format(currentDate);
			
			datenum = 1; //设置data字符串的内容为按钮对应的国家 不断刷新
						
			repaint(); //按钮按下后立刻重画
		}
		if( choice == buttons2 )//洛杉矶时间
		{
			handColor1 = Color.blue;
			handColor2 = Color.red;
			handColor3 = Color.blue;
			handColor4 = Color.blue;
			
			formatter2.applyPattern(" yyyy MMM dd EEE HH:mm:ss ");
			date = formatter2.format(currentDate);
			        	
			datenum = 2;
			
			repaint();
		}
		if( choice == buttons3 )//伦敦时间
		{
			handColor1 = Color.blue;
			handColor2 = Color.blue;
			handColor3 = Color.red;
			handColor4 = Color.blue;
			
			formatter3.applyPattern(" yyyy MMM dd EEE HH:mm:ss ");
			date = formatter3.format(currentDate);
			
			datenum = 3;			
			repaint();
		}
		if( choice == buttons4 )//东京时间
		{
			handColor1 = Color.blue;
			handColor2 = Color.blue;
			handColor3 = Color.blue;
			handColor4 = Color.red;
			
			formatter4.applyPattern(" yyyy MMM dd EEE HH:mm:ss ");
			date = formatter4.format(currentDate);
			
			datenum = 4;			
			repaint();
		}
	}
	
	public void paint(Graphics g)
	{
		super.paint( g );
		Graphics2D g2d = ( Graphics2D ) g;
		
		g.setFont(clockFaceFont);//设置字体 
		
		//-------------------第一个钟--------------------
		
        // 钟盘
        g.setColor(handColor1);
        g2d.setStroke(new BasicStroke( 4.0f ) );
        g2d.draw( new Arc2D.Double( xcenter-55, ycenter-55,110,110,0,360,Arc2D.OPEN) );//钟盘 并且设置了宽度
        g2d.setStroke(new BasicStroke( 2.0f ) );
        g.setColor(numberColor);
        g.drawString("9", xcenter-45, ycenter+3); //钟上的数字刻度
        g.drawString("3", xcenter+40, ycenter+3);
        g.drawString("12", xcenter-5, ycenter-37);
        g.drawString("6", xcenter-3, ycenter+45);

        // 指针
        g.setColor(numberColor);
        g.drawString(lastdate, 25, 220);    
        g.drawLine(xcenter, ycenter, clockxs, clockys);
        g.setColor(handColor);
        g.drawLine(xcenter, ycenter-1, clockxm, clockym);
        g.drawLine(xcenter-1, ycenter, clockxm, clockym);
        g.drawLine(xcenter, ycenter-1, clockxh, clockyh);
        g.drawLine(xcenter-1, ycenter, clockxh, clockyh); // 1end
        
        //-----------------------第二个钟----------------------
        
        g.setColor(handColor2);
        g2d.setStroke(new BasicStroke( 4.0f ) );        
        g.drawArc(xcenter2-55, ycenter2-55, 110, 110, 0, 360);
        g2d.setStroke(new BasicStroke( 2.0f ) );
        g.setColor(numberColor);
        g.drawString("9", xcenter2-45, ycenter2+3); 
        g.drawString("3", xcenter2+40, ycenter2+3);
        g.drawString("12", xcenter2-5, ycenter2-37);
        g.drawString("6", xcenter2-3, ycenter2+45);

        g.setColor(numberColor);
        g.drawString(lastdate2, 175, 220);    
        g.drawLine(xcenter2, ycenter2, clockxs2, clockys2);
        g.setColor(handColor);
        g.drawLine(xcenter2, ycenter2-1, clockxm2, clockym2);
        g.drawLine(xcenter2-1, ycenter2, clockxm2, clockym2);
        g.drawLine(xcenter2, ycenter2-1, clockxh2, clockyh2);
        g.drawLine(xcenter2-1, ycenter2, clockxh2, clockyh2); // 2end
        
        //----------------------------第三个钟-------------------------
        
        g.setColor(handColor3);
        g2d.setStroke(new BasicStroke( 4.0f ) ); 
        g.drawArc(xcenter3-55, ycenter3-55, 110, 110, 0, 360);
        g2d.setStroke(new BasicStroke( 2.0f ) ); 
        g.setColor(numberColor);
        g.drawString("9", xcenter3-45, ycenter3+3); 
        g.drawString("3", xcenter3+40, ycenter3+3);
        g.drawString("12", xcenter3-5, ycenter3-37);
        g.drawString("6", xcenter3-3, ycenter3+45);

        g.setColor(numberColor);
        g.drawString(lastdate3, 25, 420);    
        g.drawLine(xcenter3, ycenter3, clockxs3, clockys3);
        g.setColor(handColor);
        g.drawLine(xcenter3, ycenter3-1, clockxm3, clockym3);
        g.drawLine(xcenter3-1, ycenter3, clockxm3, clockym3);