import java.io.*;import java.net.*;public class TCPServer1 {	public static void main(String[] args) throws IOException {		// TODO Auto-generated method stub		ServerSocket ss=new ServerSocket(10005);		Socket s=ss.accept();				InputStream is=s.getInputStream();				byte[] b=new byte[1024];		int len=is.read(b);		if(len!=0){			System.out.PRintln(new String(b,0,len));		}			OutputStream os=s.getOutputStream();		os.write("ni ye hao".getBytes());				s.close();		ss.close();	}}
import java.io.*;import java.net.*;import java.util.Arrays;public class TCPClient1 {	public static void main(String[] args) throws UnknownHostException, IOException {		// TODO Auto-generated method stub		Socket s=new Socket("127.0.0.1",10005);				OutputStream os=s.getOutputStream();		os.write("nihao".getBytes());				InputStream is=s.getInputStream();		byte[] b=new byte[is.available()];		is.read(b);		System.out.println(new String(b));//ni ye hao		System.out.println(Arrays.toString(b));//	[110, 105, 32, 121, 101, 32, 104, 97, 111]如果不用這個方法的話打印出來的將會是地址值	}}