Java Language Specification, Version Java SE 21 Edition

8.4. Method Declarations

5 Documented Misconceptions

MethodWithoutReturnType

A method declaration does not need to include a return type

MethodsWithoutClass

Methods can be defined outside a class

RecursiveActivationsShareFrame

Recursive calls of a method share a stack frame

RecursiveMethodImpliesRecursiveType

A class with a recursive method represents part of a recursive data structure

RecursiveMethodNeedsIfElse

A recursive method needs to contain an if-else statement