如何创建基本的Java服务器

以下是Sun提供的一个简单的“Knock Knock"”服务器：
import javanet;import javaio;public class KnockKnockServer {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(4444);
} catch (IOException e) {
Systemerrprintln("Could not listen on port: 4444");
Systemexit(1);
}
Socket clientSocket = null;
try {
clientSocket = serverSocketaccept();
} catch (IOException e) {
Systemerrprintln("Accept failed");
Systemexit(1);
}
PrintWriter out = new PrintWriter(clientSocketgetOutputStream(), true);
BufferedReader in = new BufferedReader(
new InputStreamReader(
clientSocketgetInputStream()));
String inputLine, outputLine;
KnockKnockProtocol kkp = new KnockKnockProtocol();
outputLine = kkpprocessInput(null);
outprintln(outputLine);
while ((inputLine = inreadLine()) != null) {
outputLine = kkpprocessInput(inputLine);
outprintln(outputLine);
if (outputLineequals("Bye"))
break;
}
outclose();
inclose();
clientSocketclose();
serverSocketclose();
}}
再简单不过了。

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