Pair programming with colleagues I often get frustrated by them wasting time doing things a hard way. Like using print statements instead of the debugger, or setting a breakpoint but then have to skip it twenty times to get to the correct case (instead of a conditional bp), or restarting the whole server instead of hot reloading the changed class in a second.
So I think many don't know how smooth java can be if used correctly. But that also makes me think if there are low hanging fruit / obvious stuff I also don't know that could be a boost to my productivity?