Tiobe has updated its programming language popularity index for October, and the big news was climbing popularity for Java, which remains at the top of the chart. Java's rating increased to 20.403 percent; it was the first time it reached above the 20 percent mark since July 2009. "The Java language is changing nowadays, after having been at the same level for many years," Tiobe Managing Director Paul Jansen said. "It's closing the gap with functional programming languages -- e.g. with Java Streams -- thus making life much easier."