simplechatclient.java

简单通信程序

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

public class SimpleChatClient {
	
	public static final int DEFAULT_PORT = 8878;
	
	public static void main(String[] args) {
		Socket server = null;
		try {
			server = new Socket( "127.0.0.1", DEFAULT_PORT );
			Scanner serverInput = new Scanner( server.getInputStream() );
			PrintWriter serverOutput = new PrintWriter( server.getOutputStream() );
			Scanner in = new Scanner( System.in );
			while ( true ) {
				System.out.println( "input your message to server:" );
				String out = in.nextLine();
				serverOutput.println( out );
				serverOutput.flush();
				String returnMessage = serverInput.nextLine();
				System.out.println( returnMessage );
				if ( out.equals( "exit" )) {
					break;
				}
			}
		} catch( IOException e ) {
			e.printStackTrace();
		} finally {
			try {
				server.close();
			} catch( IOException e ) {
				e.printStackTrace();
			}
		}
	}
}