sjava.java

在pc上调试後运行这段代码

 // tcpServer.java by fpont 3/2000 

// usage : java tcpServer . 
// default port is 1500. 
// connection to be closed by client. 
// this server handles only 1 connection. 

import java.net.*; 
import java.io.*; 

public class tcpServer { 
    
   public static void main(String args[]) { 

int port; 
ServerSocket server_socket; 
BufferedReader input; 
try { 
    port = Integer.parseInt(args[0]); 
} 
catch (Exception e) { 
    System.out.println("port = 1500 (default)"); 
    port = 1500; 
} 

try { 
    server_socket = new ServerSocket(port); 
    System.out.println("Server waiting for client on port " + 
         server_socket.getLocalPort()); 
    // server infinite loop 
    while(true) { 
 Socket socket = server_socket.accept(); 
 System.out.println("New connection accepted " + 
      socket.getInetAddress() + 
      ":" + socket.getPort()); 
 input = new BufferedReader(new InputStreamReader(socket.getInputStream())); 
 // print received data 
 try { 
     while(true) { 
  String message = input.readLine(); 
  if (message==null) break; 
  System.out.println(message); 
     } 
 } 
 catch (IOException e) { 
     System.out.println(e); 
 } 
  
 // connection closed by client 
 try { 
     socket.close(); 
     System.out.println("Connection closed by client"); 
 } 
 catch (IOException e) { 
     System.out.println(e); 
 } 
    } 
} 
catch (IOException e) { 
    System.out.println(e); 
} 
   } 
} 





// tcpClient.java by fpont 3/2000 

// usage : java tcpClient 
// default port is 1500 

import java.net.*; 
import java.io.*; 

public class tcpClient { 



   public static void main(String[] args) { 

int port = 1500; 
String server = "localhost"; 
Socket socket = null; 
String lineToBeSent; 
BufferedReader input; 
PrintWriter output; 
int ERROR = 1; 

// read arguments 
if(args.length == 2) { 
    server = args[0]; 
    try { 
 port = Integer.parseInt(args[1]); 
    } 
    catch (Exception e) { 
 System.out.println("server port = 1000 (default)"); 
 port = 1500; 
    } 
} 



// connect to server 
try { 
    socket = new Socket(server, port); 
    System.out.println("Connected with server " + 
      socket.getInetAddress() + 
      ":" + socket.getPort()); 
} 
catch (UnknownHostException e) { 
    System.out.println(e); 
    System.exit(ERROR); 
} 
catch (IOException e) { 
    System.out.println(e); 
    System.exit(ERROR); 
} 



try { 
    input = new BufferedReader(new InputStreamReader(System.in)); 
    output = new PrintWriter(socket.getOutputStream(),true); 

    // get user input and transmit it to server 
    while(true) { 
 lineToBeSent = input.readLine(); 
 // stop if input line is "." 
 if(lineToBeSent.equals(".")) break; 
 output.println(lineToBeSent); 
    } 
} 
catch (IOException e) { 
    System.out.println(e); 
} 

try { 
    socket.close(); 
} 
catch (IOException e) { 
    System.out.println(e); 
} 
   } 
} 


 // tcpServer.java by fpont 3/2000 

// usage : java tcpServer . 
// default port is 1500. 
// connection to be closed by client. 
// this server handles only 1 connection. 

import java.net.*; 
import java.io.*; 

public class tcpServer { 
    
  public static void main(String args[]) { 

int port; 
ServerSocket server_socket; 
BufferedReader input; 
try { 
   port = Integer.parseInt(args[0]); 
} 
catch (Exception e) { 
   System.out.println("port = 1500 (default)"); 
   port = 1500; 
} 

try { 
   server_socket = new ServerSocket(port); 
   System.out.println("Server waiting for client on port " + 
        server_socket.getLocalPort()); 
   // server infinite loop 
   while(true) { 
Socket socket = server_socket.accept(); 
System.out.println("New connection accepted " + 
     socket.getInetAddress() + 
     ":" + socket.getPort()); 
input = new BufferedReader(new InputStreamReader(socket.getInputStream())); 
// print received data 
try { 
    while(true) { 
 String message = input.readLine(); 
 if (message==null) break; 
 System.out.println(message); 
    } 
} 
catch (IOException e) { 
    System.out.println(e); 
} 
  
// connection closed by client 
try { 
    socket.close(); 
    System.out.println("Connection closed by client"); 
} 
catch (IOException e) { 
    System.out.println(e); 
} 
   } 
} 
catch (IOException e) { 
   System.out.println(e); 
} 
  } 
} 





// tcpClient.java by fpont 3/2000 

// usage : java tcpClient 
// default port is 1500 

import java.net.*; 
import java.io.*; 

public class tcpClient { 



  public static void main(String[] args) { 

int port = 1500; 
String server = "localhost"; 
Socket socket = null; 
String lineToBeSent; 
BufferedReader input; 
PrintWriter output; 
int ERROR = 1; 

// read arguments 
if(args.length == 2) { 
   server = args[0]; 
   try { 
port = Integer.parseInt(args[1]); 
   } 
   catch (Exception e) { 
System.out.println("server port = 1000 (default)"); 
port = 1500; 
   } 
} 



// connect to server 
try { 
   socket = new Socket(server, port); 
   System.out.println("Connected with server " + 
     socket.getInetAddress() + 
     ":" + socket.getPort()); 
} 
catch (UnknownHostException e) { 
   System.out.println(e); 
   System.exit(ERROR); 
} 
catch (IOException e) { 
   System.out.println(e); 
   System.exit(ERROR); 
} 



try { 
   input = new BufferedReader(new InputStreamReader(System.in)); 
   output = new PrintWriter(socket.getOutputStream(),true); 

   // get user input and transmit it to server 
   while(true) { 
lineToBeSent = input.readLine(); 
// stop if input line is "." 
if(lineToBeSent.equals(".")) break; 
output.println(lineToBeSent); 
   } 
} 
catch (IOException e) { 
   System.out.println(e); 
} 

try { 
   socket.close(); 
} 
catch (IOException e) { 
   System.out.println(e); 
} 
  } 
}