package sockets;import java.net.*;import java.io.*;public class SocketsServerString {  public static void main(String[] args) throws IOException {    //聲明客戶端寫出類    PrintWriter clientPrintWriter = null;    //聲明客戶端讀入類    BufferedReader clientBufferedReader = null;    //創(chuàng)建服務(wù)接口    ServerSocket serverSocket = null;    try {      //應(yīng)用端口2222      serverSocket = new ServerSocket(2222);    } catch (IOException e) {      e.printStackTrace();      System.exit(0);    }    System.out.println("成功創(chuàng)建2222端口的服務(wù)器.");    //創(chuàng)建Socket的客戶接口,當(dāng)有客戶端的程序訪問該服務(wù)接口時(shí)激活該類    Socket clientSocket = null;    try {      //通過accept()方法使服務(wù)器與客戶端的Socket接口建立聯(lián)系      clientSocket = serverSocket.accept();    } catch (IOException e) {      e.printStackTrace();      System.exit(0);    }    //取得客戶端的寫出類    clientPrintWriter = new PrintWriter(clientSocket.getOutputStream(), true);    //取得客戶端的讀入類    clientBufferedReader = new BufferedReader(new InputStreamReader(                            clientSocket.getInputStream()));    //當(dāng)有客戶端的程序進(jìn)入時(shí)顯示歡迎信息    clientPrintWriter.println("服務(wù)端傳入的字符串");    //讀入客戶端信息    String fromClient = clientBufferedReader.readLine();    System.out.println(fromClient);    System.out.println("完成客戶端信息的讀入.");    //關(guān)閉客戶端的寫出器    clientPrintWriter.close();    //關(guān)閉客戶端的讀入器    clientBufferedReader.close();    //關(guān)閉客戶端接口    clientSocket.close();    //關(guān)閉服務(wù)端接口    serverSocket.close();  }}