This is a statement from Mikeal Rogers, community organizer of the Node.js Foundation, from a recent interview with the New Stack. This is someone who has been involved with Node.js, hands on, since it was released. You can check out the New Stack interview - you can read the full story, but basically he’s been a Node junkie since the second day it was released. That was in 2009.
So, getting to it - Java or Node.js?
Mikeal mentioned that there are currently about 8 million estimated Node.js users with a 100% growth rate per year. Last year the Node.js Foundationed announced that they have 3.5 million users, so the 100% growth rate, at least for the time being, is right on the money.
Basic math would put Node.js users at around 16 million next year. So how many users does Java have?
In 2013 Oracle said that there were 9 million Java developers. In 2007 there were about 6 million. In 2017? Hard to tell.
Oracle hasn’t released any official data on this so it’s just conjecture at this point, but considering their (maybe) growth rate, there should be somewhere between 12-14 million Java developers right now. Again, it’s just a guessing game.
But let’s look at some numbers!
The TIOBE index is an indicator of the popularity of programming languages. Popularity being an important factor for adoption, is a good way to compare the two. The TIOBE rating is based on the number of skilled engineers world-wide, courses and third party vendors. It used 25 search engines to calculate the index. You can learn more about it here.
Java has been very popular for a long time before Node.js was even released. Checking out the history index in TIOBE we can see that it was the number one language on more than one occasion.
So far, this year it’s again the most popular language. Here’s Java over time.
Nevertheless, the TIOBE index shows a mature and popular Java. That being said, consider that PayPal and Netflix moved from Java to Node.js. Java might be popular, but companies will still change stacks if something better comes along and Node.js has its share of attributes that make the change worthwhile. There are also plenty other Node.js companies to check out.
HackerNews has a whoishirign section and a tracking system for jobs. In the picture below you can see a comparison of Node js (blue) and Java (black) from August 2011 to June 2017. This is also a subjective comparison, it only takes into account the Hacker news platform, but as an indication it follows the same trend as the previous resources mentioned.
See how Node.js grows and occasionally overtakes Java?
Using the Stack Overflow Survey we can directly compare Java and Node.js. Take into account that the survey is representative only for Stack Overflow users.
Node.js went from 8% in 2013 to 26% in 2017 and Java went from 42% to 39% in the same period (% of respondents that use the language).
Considering the trend(s), even with just a slight drop for Java, Mikeal’s prediction might be true if the Node.js 100% growth rate carries on.