How to find out about available fields and methods in Java (similar to dir in Python)?

Question

Java

I am a Python developer but have recently started learning Java. Many familiar (and very convenient) things for Python in the Java language are missing. For example, when developing, I often use the dir function, which gives me a small overview of an object.
Question: can this (or something similar) be done in Java and how?

Answer 1

Java doesn't have repl, so either you want it in debug or before compilation. In any debugger, it is possible to see what is inside the objects. And before compilation - look at the sources and docks. IDEs make this very easy.