服务器

package demo04;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ScrollPaneConstants;
public class ownServer {
 public static void main(String[] args) {
 // TODO Auto-generated method stub
 new Server().launch();
 }
}
class Server{
 JFrame frame;
 JTextArea taArea;
 JTextField tfField;
 JButton sbButton;
 DataInputStream read ;
 DataOutputStream write;
 ServerSocket scServerSocket; 
 Socket socket;
 
 public void launch() {
 CreateUI();
 CreateNetWork();
 new ServerWrite().start();
 new ServerRead().start();
 } 
 public void CreateUI() {
 frame = new JFrame("MM Server");
 JPanel Panle = new JPanel();
 taArea = new JTextArea(15,25);
 taArea.setLineWrap(true);
 taArea.setWrapStyleWord(true);
 taArea.setEditable(true);
 JScrollPane qScroller=newJScrollPane(taArea); 
 qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);         
 qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
 tfField = new JTextField(20);
 sbButton = new JButton("发送");
 Panle.add(qScroller);
 Panle.add(tfField);
 Panle.add(sbButton); 
    frame.getContentPane().add(BorderLayout.CENTER,Panle);
    frame.setSize(400,400);
    frame.setVisible(true); 
 }
 public void close()
 {
 try
 {
  write.close();
  read.close();
  socket.close();
  scServerSocket.close();
 }
 catch (Exception e)
 {
  System.exit(-1);
 }
 } 
 public void CreateNetWork() { 
  
 try {
   scServerSocket =new ServerSocket(7780);
  socket= scServerSocket.accept();
  read = new DataInputStream(socket.getInputStream());
  write = new DataOutputStream(socket.getOutputStream());  
  System.out.print("网络连接");
 
 } catch (Exception e) {
  // TODO: handle exception
  e.printStackTrace();
 } 
 }
 class ServerRead extends Thread{
 public void run() { 
  while (true) {
   try {
   String message = read.readUTF();
   taArea.append("对方："+message+ "\n");
  } catch (Exception e1) {
  // TODO: handle exception
  JOptionPane.showMessageDialog(taArea, "提示: 服务端已经断开连接");
  
  //e.printStackTrace();
  //System.exit(-1);
  return ;
  }  
  }
 }
 }
class ServerWrite extends Thread{
 
 public void run() {
  tfField.addActionListener(new ServerListen());
  sbButton.addActionListener(new ServerListen());
 }
 }
 class ServerListen implements ActionListener{
 @Override
 public void actionPerformed(ActionEvent e) {
  try {
  String str = tfField.getText();
  tfField.setText("");
  taArea.append("我: " + str + "\n");
  write.writeUTF(str);
  
  } catch (Exception e2) {
  // TODO: handle exception
  e2.printStackTrace();
  }
 } 
 } 
}