I also feel like it’s not accurate anymore.
Java doesn’t run on iOS. Period. In fact it’s almost impossible to build an iOS app using Java - the only ways to do it are essentially to transpile Java to some other language, so Java isn’t running on iOS at all.
iOS is one of the most popular operating system in the world by any measure. It supports a lot of languages.
But not Java.
I said “one of” the most popular.