Assertions in java

Question

i m confused by the call by value property of java.those it sends an object it treats it as call by value.so what actually happens in terms of memory wise when an object is passed to a function.this quite a puzzed question to me and i ll be thank ful to u if u could help me
regards
bhushan

Answer 1

What has this with assertions to do? Assertions are a way to check the consistency of programs during development.
Anyway all parameters in method calls are passed by value in Java. This means that the content of a variable is passed.
Now in Java all objects are treated by their references. You can think of a reference as a pointer to an object. The object value itself is at a storage called the heap. So all object variables contains a reference to some object. That's why they're also called reference variables.
So the content of a reference variable is a reference and it's passed by value to a method. The object value always stays on the heap while references to it are passed around.