Learn enough java so you can read and understand it, then learn Kotlin to write your own tools.
Java is verbose and clunky, but it has decades of tools, programs and libraries done and availiable, most of them open source.
Since Kotlin can use any java library and compile to JVM bytecode, you keep access to all the millions of developer hours Java accumulated while still using something lean and concise to write your own code
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Can i do a half-pitch?
Learn enough java so you can read and understand it, then learn Kotlin to write your own tools.
Java is verbose and clunky, but it has decades of tools, programs and libraries done and availiable, most of them open source.
Since Kotlin can use any java library and compile to JVM bytecode, you keep access to all the millions of developer hours Java accumulated while still using something lean and concise to write your own code