Open source confusion
Is Java open source or not? Just which libraries are open source? Darned if I can be sure even after Google's long skirmish with Oracle. For the most part, Java programmers don't need to worry because the JREs and JDKs are freely available. But in the backs of our minds, there's always the scary feeling that some lawyer will jump out of nowhere and say, “Stop!” Somehow it feels like the legal status makes us all pawns in the battles between IBM, Oracle, and Google.