資源簡介
采用java編寫，利用多線程，服務器客戶端，socket等知識，實現局域網多個客戶端之間聊天，實時繪圖（一個客戶端繪圖的同時其他客戶端能同步顯示），異步繪圖（繪畫完成后再傳輸到其他客戶端），對初學者有很高參考意義。
代碼片段和文件信息
package?client;
import?java.awt.BasicStroke;
import?java.awt.BorderLayout;
import?java.awt.Color;
import?java.awt.Dimension;
import?java.awt.EventQueue;
import?java.awt.Font;
import?java.awt.Graphics;
import?java.awt.Graphics2D;
import?java.awt.Point;
import?java.awt.Toolkit;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.awt.event.MouseEvent;
import?java.awt.event.MouseListener;
import?java.awt.event.MouseMotionListener;
import?java.io.IOException;
import?java.io.objectInputStream;
import?java.io.objectOutputStream;
import?java.net.Socket;
import?java.net.SocketException;
import?java.net.UnknownHostException;
import?java.util.ArrayList;
import?java.util.List;
import?javax.swing.BorderFactory;
import?javax.swing.Box;
import?javax.swing.ImageIcon;
import?javax.swing.JButton;
import?javax.swing.JColorChooser;
import?javax.swing.JComboBox;
import?javax.swing.Jframe;
import?javax.swing.JLabel;
import?javax.swing.JPanel;
import?javax.swing.JScrollPane;
import?javax.swing.JSlider;
import?javax.swing.JTextArea;
import?javax.swing.JTextPane;
import?javax.swing.border.EmptyBorder;
import?javax.swing.event.ChangeEvent;
import?javax.swing.event.ChangeListener;
//畫筆選擇
enum?PaintChoose?{
LINE?OVAL?RECT?PEN?ERASER
}
@SuppressWarnings（“serial“）
public?class?Client?extends?Jframe?{
private?JPanel?contentPane;
private?Chat?chat;
private?Canvas?canvas;
private?Socket?socket;
private?objectInputStream?objin;
private?objectOutputStream?objout;
private?List?graph_list?=?new?ArrayList（）;
private?List?server_graph?=?new?ArrayList（）;
private?boolean?begin?=?false;
private?boolean?show?=?false;
private?Thread?my_thread?=?new?Thread（new?MyClientThread（））;
JButton?btn_Send?=?new?JButton（“發(fā)送“）;
JButton?btn_sendGraph?=?new?JButton（“發(fā)送圖片“）;
JButton?btn_getGraph?=?new?JButton（“獲取圖片“）;
JButton?btn_show?=?new?JButton（“實時（關閉）“）;
private?JTextArea?textArea;
private?JTextPane?textPane?=?new?JTextPane（）;
private?JLabel?us?=?new?JLabel（“用戶名：“）;
private?JTextArea?username?=?new?JTextArea（“用戶名“）;
public?void?startChat（）?{
try?{
socket?=?new?Socket（“127.0.0.1“?8005）;
objout?=?new?objectOutputStream（socket.getOutputStream（））;
objin?=?new?objectInputStream（socket.getInputStream（））;
begin?=?true;
}?catch?（UnknownHostException?e）?{
e.printStackTrace（）;
}?catch?（IOException?e）?{
e.printStackTrace（）;
}
}
public?static?void?main（String[]?args）?{
EventQueue.invokeLater（new?Runnable（）?{
public?void?run（）?{
try?{
Client?frame?=?new?Client（）;
frame.setSize（1050?700）;
frame.settitle（“網絡白板客戶端“）;
Dimension?dem?=?Toolkit.getDefaultToolkit（）.getScreenSize（）;
frame.setLocation（
（int）?（dem.getWidth（）?-?frame.getWidth（））?/?2
（int）?（dem.getHeight（）?-?frame.getHeight（））?/?2）;
frame.setVisible（true）;
//?frame.setResizable（fa ?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-03-11?21:56??網絡白板\
?????目錄???????????0??2015-03-11?21:56??網絡白板\project3\
?????文件?????????301??2014-11-22?13:31??網絡白板\project3\.classpath
?????文件?????????384??2014-11-22?13:31??網絡白板\project3\.project
?????目錄???????????0??2015-03-11?21:56??網絡白板\project3\.settings\
?????文件?????????598??2014-11-22?13:31??網絡白板\project3\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2015-03-11?21:56??網絡白板\project3\bin\
?????目錄???????????0??2015-03-11?21:56??網絡白板\project3\bin\client\
?????文件????????1176??2014-11-26?19:47??網絡白板\project3\bin\client\Client$1.class
?????文件????????1686??2014-11-26?19:47??網絡白板\project3\bin\client\Client$2.class
?????文件????????1272??2014-11-26?19:47??網絡白板\project3\bin\client\Client$3.class
?????文件?????????992??2014-11-26?19:47??網絡白板\project3\bin\client\Client$4.class
?????文件?????????792??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$1.class
?????文件?????????935??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$10.class
?????文件?????????940??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$11.class
?????文件?????????940??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$12.class
?????文件?????????952??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$13.class
?????文件?????????952??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$14.class
?????文件?????????952??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$15.class
?????文件?????????954??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$16.class
?????文件????????1031??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$17.class
?????文件????????1198??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$18.class
?????文件????????1219??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$19.class
?????文件?????????949??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$2.class
?????文件????????1113??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$3.class
?????文件?????????858??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$4.class
?????文件?????????940??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$5.class
?????文件?????????940??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$6.class
?????文件?????????939??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$7.class
?????文件?????????939??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$8.class
?????文件?????????937??2014-11-26?19:47??網絡白板\project3\bin\client\Client$Canvas$9.class
............此處省略55個文件信息
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