As a ten year veteran of Java, currently learning C# (the world is full of irony), I can say that Java is a simpler language. There are a bunch of bones thrown to c++ and assembler focused guys in C# making it a more complex language to master. And I dispute that VisualStudio is a better IDE than IntelliJ. So, my honest opinion is start with Java.
Spend time writing code, and just as importantly, reading it. Read through Spring, Hibernate, et al. Understand the architectures, the trade offs, and the code tricks.
Spend time writing code, and just as importantly, reading it. Read through Spring, Hibernate, et al. Understand the architectures, the trade offs, and the code tricks.