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Line.javaÎļþ-------Çý¶¯Àà
import javax.swing.JFrame;
public class Line
{
   public static void main(String[] arg)
   {
       JFrame frame=new JFrame("Draw lines");
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       Linepanel pane=new Linepanel();
       frame.getContentPane().add(pane);
       frame.pack();
       frame.setVisible(true);
   }
}
 
Linepanel.javaÎļþ
 
 
 
 
import java.util.ArrayList;
import javax.swing.*;
import java.awt.*;
import java.awt.Point;
import java.awt.event.*;
public class Linepanel extends JPanel
{
       private Point point1=null,point2=null;
       private ArrayList<Point> pointlist;
       public Linepanel()
      {
            pointlist=new ArrayList<Point>();
            Linelistener listener=new Linelistener();
            addMouseListener(listener);
            addMouseMotionListener(listener);
            setBackground(Color.black);
            setPreferredSize(new Dimension(400,200));
       }
       public void paintComponent(Graphics page)
      {
            super.paintComponent(page);
          


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sql 2005 ´æ´¢¹ý³Ì·ÖÒ³ java ´úÂë

 create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',         
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ ......

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Tomcat ÏµĶ¨Ê±ÈÎÎñ
SysContextListener.java
package axtic.servlet;
import java.util.Timer;//¶¨Ê±Æ÷Àà
import axtic.bean.exportHistoryBean;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
public class SysContextListener implements ServletContextListener
......

Java ÀíÂÛÓëʵ¼ù: ÕýȷʹÓà Volatile ±äÁ¿

Java™ ÓïÑÔ°üº¬Á½ÖÖÄÚÔÚµÄͬ²½»úÖÆ£ºÍ¬²½¿é£¨»ò·½·¨£©ºÍ volatile ±äÁ¿¡£ÕâÁ½ÖÖ»úÖÆµÄÌá³ö¶¼ÊÇΪÁËʵÏÖ´úÂëÏ̵߳ݲȫÐÔ¡£ÆäÖÐ Volatile ±äÁ¿µÄͬ²½ÐԽϲµ«ÓÐʱËü¸ü¼òµ¥²¢ÇÒ¿ªÏú¸üµÍ£©£¬¶øÇÒÆäʹÓÃÒ²¸üÈÝÒ׳ö´í¡£ÔÚÕâÆÚµÄ Java ÀíÂÛÓëʵ¼ù
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