$ java TestOut
63 == 65533
[1]+  Done                    java TestIn
$ java TestIn &
[1] 29008
$ java Terminator localhost

65533 == 65533
[1]+  Done                    java TestIn
$ cat TestIn.java
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;


public class TestIn {
        public static void main(String[] args) {
                try {
                        ServerSocket ss = new ServerSocket(16789);
                        Socket s = ss.accept();
                        InputStreamReader isr = new InputStreamReader(s.getInputStream());
                        System.out.print((int) isr.read());
                        System.out.println(" == 65533");
                } catch (Exception e) {
                        e.printStackTrace();
                }
        }
}
$ cat TestOut.java
import java.io.OutputStreamWriter;
import java.net.Socket;

public class TestOut {
        public static void main(String[] args) {
                try {
                        OutputStreamWriter osw = new OutputStreamWriter(new Socket("127.0.0.1", 16789).getOutputStream());
                        osw.write(65533);
                        osw.flush();
                } catch (Exception e) {
                        e.printStackTrace();
                }
        }
}