Can a Java object pass itself an instance of itself

Question

I have a class called SomeClass which has a method called methodToCall(SomeClass o)

If I instantiate SomeClass like this:

SomeClass itsObject = new SomeClass();

Can I then do this:

itsObject.methodToCall(itsObject);

Answer 1

Absolutely. How that will behave will depend on the implementation, of course.

Just as an example, equals is defined to be reflexive, such that:

x.equals(x)

should always return true (assuming x is non-null).