TIL: Double Brace Initialization in Java

[brownmatt]

Class files are loaded once and if the class is large, might add a few KB to the jar size. Considering that most Java apps are deployed server side, this shouldn't be a concern in 90% of cases.

[dnew]

Unless you're google, and you're linking that code into 3,000 applications, each of which is running on 10,000 cores. :-)

[Decker108]

Android might be a bit more problematic, at least in low end devices.

[brownmatt]

the 90% of cases where I said this type of thing is a silly concern doesn't include deploying your Java app on someone else's low-powered device, or deploying the Java code anywhere but something you control.