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PooledDaytimeServer.java
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54 lines (45 loc) · 1.3 KB
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import java.io.*;
import java.net.*;
import java.util.*;
import java.util.concurrent.*;
public class PooledDaytimeServer {
public final static int PORT = 13;
public static void main(String[] args) {
ExecutorService pool = Executors.newFixedThreadPool(50);
try (ServerSocket server = new ServerSocket(PORT)) {
while (true) {
try {
Socket connection = server.accept();
Callable<Void> task = new DaytimeTask(connection);
pool.submit(task);
} catch (IOException ex) {}
}
} catch (IOException ex) {
System.err.println("Couldn't start server");
}
}
private static class DaytimeTask implements Callable<Void> {
private Socket connection;
DaytimeTask(Socket connection) {
this.connection = connection;
}
@Override
public Void call() {
try {
Writer out = new OutputStreamWriter(connection.getOutputStream());
Date now = new Date();
out.write(now.toString() +"\r\n");
out.flush();
} catch (IOException ex) {
System.err.println(ex);
} finally {
try {
connection.close();
} catch (IOException e) {
// ignore;
}
}
return null;
}
}
}