java ¶àÏß³Ì
package server;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Bounce {
public static void main(String[] args) {
JFrame frame = new BounceFrame();
frame.setDefaultCloseOperation((JFrame.EXIT_ON_CLOSE));
frame.setVisible(true);
System.out.format("%d",2);
}
}
class Ball
{
private static final int XSIZE = 15;
private static final int YSIZE = 15;
private double x = 0;
private double y = 0;
private double dx = 1;
private double dy = 1;
public void move(Rectangle2D bounds)
{
x += dx;
y += dy;
if (x < bounds.getMinX())
{
x = bounds.getMinX();
dx = -dx;
}
if (x + XSIZE >= bounds.getMaxX())
{
x = bounds.getMaxX() - XSIZE;
dx = -dx;
}
if (y < bounds.getMinY())
{
y = bounds.getMinY();
dy = -dy;
}
if (y + YSIZE >= bounds.getMaxY())
{
y = bounds.getMaxY() - YSIZE;
dy = -dy;
}
}
public Ellipse2D getShape()
{
return new Ellipse2D.Double(x,y,XSIZE,YSIZE);
}
}
class BallPanel extends JPanel
{
private ArrayList<Ball> balls = new ArrayList<Ball>();
public void add(Ball b)
{
balls.add(b);
}
&nbs
Ïà¹ØÎĵµ£º
package cn.ctgu.edu.ac;
import java.sql.*;
public class test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String url="jdbc:sqlserver://localhost:1433;Database=ÍøÉÏÊéµê¹ÜÀíϵͳ;integr ......
×òÌì²Å¿´µ½£¬µ«ÊÇÓöµ½Ò»Ð©ÎÊÌ⣬½ñÌì½â¾öÁË£¬¼ÇÏ¡¡£¨²Î¿¼£ºhttp://netbeans.org/kb/55/beginning-jni-part1.html£©
ÎÒÓõÄÊÇNetbeans 6.7£¬µ«ÊǺÍÆäËûµÄÒ²Ó¦¸Ã´óͬСÒì°É¡£ »ù±¾Á÷³Ì£º JavaÕâ±ßµÄ£º
´´½¨javaÎļþ£¨´ønativeµÄ£©£¬»¹Òª¼ÇµÃÔÚÀàÖмÓÈ룺System.loadLibrary(xxx) ¡£
È»ºóÓÃjavahÀ´Éú³ÉC/ ......
CoreJava¶àÏß³Ì
Ï̵߳ĸÅÄ
Ïß³ÌÖ¸½ø³ÌÖеÄÒ»¸öÖ´ÐÐÁ÷³Ì£¬Ò»¸ö½ø³Ì¿ÉÒÔ°üº¬¶à¸öÏ̡߳£
ÿһ¸ö½ø³Ì¶¼¶ÀÏíÒ»¿éÄÚ´æ¿Õ¼ä¡£Ã¿¸ö½ø³Ì¶¼ÐèÒª²Ù×÷ϵͳΪÆä·ÖÅä¶ÀÁ¢µÄÄÚ´æµØÖ·£¬¶øͬһ½ø³ÌÖеĶà¸öÏß³ÌÔÚͬһ¿éµØÖ·¿Õ¼ä¹¤×÷£¬ËûÃǹ²ÏíÒ»¿éÄÚ´æºÍ×ÊÔ´¡£
javaÖÐÓÐÁ½Öз½·¨´´½¨Ò»¸ö¶àÏß³ÌÀࣺ
1¡¢¼Ì³Ðjava.lang.ThreadÀ࣬¸²¸ÇT ......
¿Î³ÌÄÚÈÝ
¸ü¼ÓʵÓÿÆѧµÄJava»ù´¡¿Î³Ì
¾ßÓÐÔúʵµÄ±àÂ빦µ×ÊÇÒ»¸öJava¹¤³Ìʦ±Ø±¸µÄÄÜÁ¦£¬ÎÒÃÇÁ¦Çó´ÓѧԱ½Ó´¥JavaµÄµÚÒ»ÌìÆð¾ÍÅàÑøÆäÐγÉÕýȷ˼¿¼ÎÊÌâµÄ·½Ê½¡£ÎÒÃǵĹØ×¢µã²»½ö½öÔÚÓÚ¶Ôij¸öÀà¿â£¨API£©µÄÕÆÎÕ£¬¸ü¶àµÄÊÇÏòѧԱչʾÆóÒµÖÐÕæÕýÒªÖØÊÓµÄÎÊÌ⣬ÀýÈçÒì³£ÈçºÎ´¦Àí¡¢Ëã·¨ÈçºÎÓÅ»¯µÈ¡£Í¬Ê±£¬ÎÒÃÇ×¢ÖØÈÃѧԱÑø³ÉÁ¼ºÃµ ......
°²×°ÓëÉèÖÃJDK
Sun JDKµÄ°²×°»ù±¾ÉÏÓÐÁ½ÖÖ·½Ê½:
1. ͨ¹ýUbuntuÌṩµÄ°ü¹ÜÀí¹¤¾ß½øÐа²×°
UbuntuÔÚÆä°ü²Ö¿âÀﶼ°üÀ¨ÓÐJDKµÄ°²×°£¬Ö»Òªsources.listÉèÖÃÕýÈ·£¬Í¨
¹ýapt-get, aptitude, Synaptic Package
ManagerµÈ¶¼ÄÜ°²×°£¬¶øÇÒÏà¹ØµÄÉèÖÃÒ²ÈÝÒ׵öࣻÔÚUbuntuµÄÐÂ
·¢²¼°æ±¾Àﶼ´øÁËJDK5.0,ºÍJDK6.0µÄ°²×°Ö§³Ö,¶øÇÒ ......