小弟在java socket编程上面遇到了一个问题，新手求助，谢谢

[fujiji]

代码如下：server端
import java.net.*; import java.io.*;
public class EchoServer {
void doService(Socket clientSocket) {
try{
DataInputStream in = new DataInputStream(clientSocket.getInputStream());
PrintStream out = new PrintStream(clientSocket.getOutputStream());
while (true) {String theLine=in.readLine(); out.println(theLine); }
}catch (IOException e) { System.err.println(e); }}

public void main(String[] args) {
ServerSocket listenSocket;
try {
listenSocket = new ServerSocket(8888); // port
while(true) {
Socket clientSocket = listenSocket.accept();
System.err.println("Connexion from:" + clientSocket.getInetAddress());
doService(clientSocket);
}}
catch (Exception e) { System.err.println(e); }
}}

client端
import java.net.*; import java.io.*;
public class EchoClient {
public static void main(String[] args) {
Socket theSocket;
DataInputStream theInputStream; DataInputStream userInput;
PrintStream theOutputStream;
String theLine;
try {
theSocket = new Socket(InetAddress.getLocalHost(),8888);
theInputStream = new DataInputStream(theSocket.getInputStream());
theOutputStream = new PrintStream(theSocket.getOutputStream());
userInput = new DataInputStream(System.in);
while (true) {
theLine = userInput.readLine();
if (theLine.equals(".")) break;
theOutputStream.println(theLine);
System.out.println(theInputStream.readLine());
}
} catch (UnknownHostException e) { System.err.println(e);
} catch (IOException e) { System.err.println(e); } } }


不知道为什么编译的时候没有问题，但是在运行服务端的时候，显示如下错误？
Exception in thread "main" java.lang.NoSuchMethodError: main

希望有明白人给小弟解答，多谢各位高手了

[网络咖啡]

public void main(String[] args) {
修改为：
public static void main(String[] args) {

[fujiji]

还是不行啊，说static方法main不能调用doService(clientSocket);
谢了

[AshEmissary]

main方法必须是public static void main(Strng[] xxx)
不能调用doService就把他搞成static就行了

[AshEmissary]

少了个i