There may be flashier, easier languages out there, but, for now, according to Stack Overflow’s calculations at least, 'heritage' programming lingo is still where the big bucks lie. In 2013, Java was the most searched for skill keyword by recruiters, and almost a quarter of all employers’ searches were for Java developers.

Of all keywords searched for on Careers 2.0, Java was far and away the most in-demand, contained within 22.26% of all search queries. Compare this to the second most searched-for skill, PHP, which had almost half that number.

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http://jaxenter.com/why-java-skills-are-still-golden-for-developers.1-49296.html