Methods Notes

Java always passes arguments by value. For objects the value copied is the reference, which explains every result that looks like pass by reference.

Java

A variable arity parameter lets a method accept any number of arguments, and inside the method it is simply an array.

Java

A recursive method calls itself on a smaller problem, and it works only when a base case guarantees the shrinking stops.

Java

Several methods may share a name if their parameter lists differ, and the compiler decides which one runs before the program starts.

Java

A method groups a piece of behaviour behind a name, a parameter list and a return type, and that signature is the contract callers depend on.