client1.java

简单清晰具有启发性的实例。 Net1和Client1类实现了TCP的简单应用。 Udp和Udpwatch类实现了UDP的简单应用。 Chater是一个聊天小工具

import java.net.*;
import java.io.*;
public class Client1{
	public static void main(String[] args){
			try{
				InetAddress addr = InetAddress.getByName("Localhost");
				System.out.println("addr = "+addr);
				Socket socket2 = new Socket(addr, Net1.PORT);
				System.out.println("socket = "+socket2);
			try{
				BufferedReader sin = 
												new BufferedReader(
													 new InputStreamReader(
													 		System.in));
				BufferedReader in = 
												new BufferedReader(
													 new InputStreamReader(
													 		socket2.getInputStream()));
				PrintWriter out = 
												new PrintWriter(
														new BufferedWriter(
																new OutputStreamWriter(
																	 socket2.getOutputStream())),true);
				out.println("hello");
				String str = in.readLine();
				System.out.println(str);
				while(true){
						String ss = sin.readLine();
						out.println(ss);
						if(ss.equals("end")) break;
						str = in.readLine();
						System.out.println("From remote: "+str);
					}

			}
			finally{
				System.out.println("closing..");
				socket2.close();
			}
		}catch(Exception e){
				e.printStackTrace();
			}
	}
}