Node.java — a faithful port of the asynchronous Node.js platform to the strongly-typed Java language.

HelloNode.java

import java.util.Map;
import java.util.HashMap;
import com.joyent.node.http;
import com.joyent.node.http.RequestListener;
import com.joyent.node.http.ServerRequest;
import com.joyent.node.http.ServerResponse;

public class HelloNode {
    
    public static void main(string[] args) {
        
        http.createServer(new RequestListener() {
            
            public void onRequest(ServerRequest req, ServerResponse res) {
                Map<string, string> headers = new HashMap<string, string>();
                headers["Content-Type"] = "text/plain";
                res.writeHead(200, headers);
                res.end("Hello World\n");
            }
            
        }).listen(1337, "127.0.0.1");
        
        console.log("Server running at http://127.0.0.1:1337/");
        
    }
    
}

hellonode.js

// Example from https://nodejs.org/

var http = require('http');

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(1337, '127.0.0.1');

console.log('Server running at http://127.0.0.1:1337/');