JAVA网络编程
大家好，我刚开始学习JAVA网络编程，请问哪位高手可以把下面的这个服务器端程序和客户端程序的注释详细的写一下给我啊，谢谢了！

服务器端：
import   java.io.*;
import   java.net.*;
import   java.applet.Applet;
public   class   ServerSocketTest{
public   static   void   main(String   args[]){
try{
ServerSocket   socketObj   =   null;
try{
socketObj   =   new   ServerSocket(4700);
}catch(Exception   e){
System.out.println( "There   is   a   connetion   error ");
}
Socket   clientObj   =   null;
try{
clientObj   =   socketObj.accept();
}catch(Exception   e){
System.out.println( "Error: "+e);
}
String   strLine;
InputStreamReader   streamObj1   =   new   InputStreamReader(clientObj.getInputStream());
BufferedReader   buffObj1   =   new   BufferedReader(streamObj1);
OutputStream   outObj=   new   BufferedOutputStream(clientObj.getOutputStream());
PrintWriter   writerObj       =   new   PrintWriter(outObj);
InputStreamReader   streamObj2   =   new   InputStreamReader(System.in);
BufferedReader   buffObj2   =   new   BufferedReader(streamObj2);
System.out.println( "Client   words: "+buffObj1.readLine());
strLine   =   buffObj2.readLine();
while(!strLine.equals( "Finished "))
{
writerObj.println(strLine);
writerObj.flush();
System.out.println( "Server   words: "+strLine);
System.out.println( "Client   words: "+buffObj1.readLine());
strLine   =   buffObj2.readLine();
}
buffObj1.close();
writerObj.close();
clientObj.close();
socketObj.close();
}catch(Exception   e){
System.out.println( "Error: "+e);
}
}
}

客户端：
import   java.io.*;
import   java.net.*;
public     class   ClientSocketTest{
public   static   void   main(String   args[]){
try{
Socket   socketObj   =   new   Socket( "127.0.0.1 ",4700);
InputStreamReader   instreamObj=new   InputStreamReader(System.in);
BufferedReader   buffObj1=new   BufferedReader(instreamObj);
OutputStream   outstreamObj=socketObj.getOutputStream();
PrintWriter   writerObj=new   PrintWriter(outstreamObj);
InputStream   inputObj=socketObj.getInputStream();
InputStreamReader   instreamObj2=new   InputStreamReader(inputObj);
BufferedReader   buffObj2=new   BufferedReader(instreamObj2);
String   strLine;
strLine   =   buffObj1.readLine();
while(!strLine.equals( "Finished "))
{
writerObj.println(strLine);
writerObj.flush();
System.out.println( "Client   words: "+strLine);
System.out.println( "Server   words: "+buffObj2.readLine());
strLine   =   buffObj1.readLine();
}
writerObj.close();
buffObj2.close();
socketObj.close();
}catch(IOException   e){
System.out.println( "IO   error ");
}
}
}

------解决方案--------------------
你随便找一本书看看应该就明白了啊

try{
ServerSocket socketObj = null;
try{
socketObj = new ServerSocket(4700);//建立服务器端套接字
}catch(Exception e){