Java网络编程基础(二) Socket类的使用方法

Socket s = new Socket ("198.163.227.6", 13);
InputStream is = s.getInputStream ();
// Read from the stream.
is.close ();
      s.close ();

// SSClient.java
import java.io.*;
import java.net.*; 
class SSClient
{
　public static void main (String [] args)
　{
　　String host = "localhost";
　　// If user specifies a command-line argument, that argument
　　// redivsents the host name.
　　if (args.length == 1)
　　　host = args [0];
　　BufferedReader br = null;
　　PrintWriter pw = null;
　　Socket s = null;
　　try
　　{
　　　// Create a socket that attempts to connect to the server
　　　// program on the host at port 10000.
　　　s = new Socket (host, 10000);
　　　// Create an input stream reader that chains to the socket's
　　　// byte-oriented input stream. The input stream reader
　　　// converts bytes read from the socket to characters. The
　　　// conversion is based on the platform's default character
　　　// set.
　　　InputStreamReader isr;
　　　isr = new InputStreamReader (s.getInputStream ());
　　　// Create a buffered reader that chains to the input stream
　　　// reader. The buffered reader supplies a convenient method
　　　// for reading entire lines of text.
　　　br = new BufferedReader (isr);
　　　// Create a print writer that chains to the socket's byte-
　　　// oriented output stream. The print writer creates an
　　　// intermediate output stream writer that converts
　　　// characters sent to the socket to bytes. The conversion
　　　// is based on the platform's default character set.
　　　pw = new PrintWriter (s.getOutputStream (), true);
　　　// Send the DATE command to the server.
　　　pw.println ("DATE");
　　　// Obtain and print the current date/time.
　　　System.out.println (br.readLine ());
　　　// Send the PAUSE command to the server. This allows several
　　　// clients to start and verifies that the server is spawning
　　　// multiple threads.
　　　pw.println ("PAUSE");
　　// Send the DOW command to the server.
　　　pw.println ("DOW");
　　　// Obtain and print the current day of week.
　　　System.out.println (br.readLine ());
　　　// Send the DOM command to the server.
　　　pw.println ("DOM");
　　　// Obtain and print the current day of month.
　　　System.out.println (br.readLine ());
　　　// Send the DOY command to the server.
　　　pw.println ("DOY");
　　　// Obtain and print the current day of year.
　　　System.out.println (br.readLine ());
　　}
　　catch (IOException e)
　　{
　　　System.out.println (e.toString ());
　　}
　　finally
　　{
　　　try
　　　{
　　　　if (br != null)
　　　　　br.close ();
　　　　if (pw != null)
　　　　　pw.close ();
　　　　if (s != null)
　　　　　s.close ();
　　　}
　　　catch (IOException e)
　　　{
　　　　}
　　　}
　}
      }