Question

Here’s the code.

public class testClient {
public static void main(String[] args) {
    testClient abc = new testClient();
    abc.go();
}
public void go() {
    try {
        Socket s = new Socket("127.0.0.1",  5000);
        InputStreamReader  sr = new InputStreamReader(s.getInputStream());
        BufferedReader reader = new BufferedReader(sr);
        String x = reader.readLine();
        System.out.println(x);
        reader.close();
    } catch(IOException ex) {
        ex.printStackTrace();
    }
  }
}

public class testServer {
public static void main(String[] args) {
    testServer server = new testServer();
    server.go();
}
public void go() {
    try {
        ServerSocket s = new ServerSocket(5000);
        while(true) {
            Socket sock = s.accept();

            PrintWriter writer = new PrintWriter(sock.getOutputStream());
            String toReturn = "No cake for you.";
            writer.println(toReturn);
        }
    } catch(IOException ex) {
        ex.printStackTrace();
    }
  }
}

java.io.* and java.net.* are imported in both classes.

Now, when I try to run these(using different terminals), nothing happens. What am I doing wrong?

Screen: http://i29.tinypic.com/250qlmt.jpg

Answer 1

When using PrintWriter you need to call flush method. Changed your code to following and it works :).

public class testServer {
public static void main(String[] args) {
    testServer server = new testServer();
    server.go();
}
public void go() {
    try {
        ServerSocket s = new ServerSocket(5000);
        while(true) {
            Socket sock = s.accept();

            PrintWriter writer = new PrintWriter(sock.getOutputStream());
            String toReturn = "No cake for you.";
            writer.println(toReturn);
            writer.flush();
        }
    } catch(IOException ex) {
        ex.printStackTrace();
    }
  }
}