B4J Question Compiler Speed?

I don't have any numbers to give you however the slowest part during compilation is the java compilation step. The java compiler is a very mature and optimized compiler and is quite fast.

You can also split this project into several sub-projects and compile those components as libraries (jars). This will make things easier to maintain and will also improve compilation performance.

I've not got anything that big to test, but 20K lines of code takes about 10 seconds in release mode and 15 seconds or so in debug. All Java 14. Program is one main code module of 18K lines, about 10 class and code modules with around a dozen libraries referenced.

Clearly, this depends on the version of Java, the processor, storage system, memory, etc.

AMD Ryzen 1700, 32Gb Ram, NVME SSD with processor slightly overclocked.

Never felt it was slow, but if I work on my old laptop then I really notice the difference.