JDK 8 came out in 2014 and has support from Oracle (and plenty other vendors as well) till 2030, the least. That, plus Java is highly backwards compatible. Which platform can even come remotely close to its stability? Remember, it runs on an abstract instruction set, so there is no hardware-lock in (which happened with those fortran behemoths from the previous century - some of which actually chug along in VMs nowadays) effectively allowing code written for the platform to always be runnable.