Kinda tricky to explain. It like 1 line expression becomes a method what could be method becomes a whole class. What could reasonably be a class is a whole package. So this whole application I am looking at is about 10 KLOC in 100 Java source files arranged in 15 or so packages along with 100s of jars buried somewhere in maven repo.

To compare other application which I wrote in straightforward manner is about 20 Java files in 2-3 packages in total 4 KLOC and 15 external jar files. And my application 4-5 functions from business POV as compared to 2 functions in Spring boot application.

So to me it is more about some cobbled app as opposed to engineered solution which I hope to deliver. Mind you this is all my opinion as management is doubling down on Spring boot and mandate from very top is to convert all Java app in Spring boot based services.