java的套接字实现远程连接

package jnet;
//客户端程序，使用套接字连接服务器
import java.net.*;
import java.io.*;
import javax.swing.*;

public class socketClient {
public static void main(String[] args) {
String string=null;
Socket c_socket;
DataInputStream inputStream = null;
DataOutputStream outputStream = null;
try {
c_socket = new Socket("localhost",4329);
inputStream = new DataInputStream(c_socket.getInputStream());
outputStream = new DataOutputStream(c_socket.getOutputStream());
while(true) {
string=inputStream.readUTF();
if(string!=null)
break;
}
outputStream.writeUTF("我是客户机,收到了你返回的信息");
c_socket.close();
}
catch(IOException e) {
string="无法连接";
}
JOptionPane.showMessageDialog(null, "客户机收到:"+string);
System.exit(0);
}
}

package jnet;
import java.net.*;
import java.io.*;
import javax.swing.*;
//远程连接服务器程序
public class Scoketserve {
public static void main(String[] args) {
ServerSocket s_scoket = null;
Socket socket = null;
String string = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;
try {
s_scoket = new ServerSocket(4329);
}
catch(IOException e1)
{
System.out.println("ERRO:"+e1);
}
try {
socket = s_scoket.accept();
inputStream = new DataInputStream(socket.getInputStream());
outputStream = new DataOutputStream(socket.getOutputStream());
outputStream.writeUTF("你好,我是服务器,连接成功");
while(true) {
string = inputStream.readUTF();
if(string!=null)
break;
}
JOptionPane.showMessageDialog(null, "服务器收到:"+string);
socket.close();
}
catch (Exception e) {
System.out.println("ERROR:"+e);
}
}
}