index.js

var net = require('net');

var HOST = '127.0.0.1';
var PORT = 4242;

var server = net.createServer();
server.listen(PORT, HOST);
server.on('connection', function(sock) {
  console.log('CONNECTED');
  
  sock.on('data', function(data) {
    console.log(data);
  });
  
  sock.on('close', function(data) {
    console.log('CLOSED');
  });
  
});

main.java

try {
  InetAddress serverAddress = InetAddress.getByName("192.168.0.1");
  Socket socket = new Socket(serverAddress, 4242);
  connected = true;
  PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(
  socket.getOutputStream())), true);
  out.println("heyDude");
  socket.close();
  } catch (UnknownHostException e) {
  e.printStackTrace();
  } catch (IOException e) {
  e.printStackTrace();
  }

So I am new to nodejs and i am attempting to open a socket connection using the code from this gist. https://gist.github.com/px-amaac/06b313cde46fad4d2da9