Java sucked from day one. Anything that can be "destroyed" by MS, Oracle, IBM or Sun was never worth a crap to begin with. I've programmed with MS .Net and Java and every Java solution took longer to code, was less reliable, slower and consumed more system resources. It got hyped because it was an alternative to MS back in the days when Ellison and McNealy went crying to the government over MS's supposed "monopoly".

No intermittent source is worth a damn anyway. Solar will always have to be backed up by a gas plant operating on spinning standby so it is next to useless in replacing a fossil fuel, nuclear or hydro power plant. Solar is incapable of meeting any of the grid demand elements. Same with wind.