Question

If I created an Instance of a class how long does the Object live for and what does its life cycle depend on?

For example I have classA which I instantiate in my main class like so:

classA ca = new classA();

Does this object last as long as the runtime?

Answer 1

well, It depends on how long the object have a reference associated to itself(read about type of ref for detail). for ex.

classA ca = new classA();
classA ca = new classB();  //first reference assigned to some other object

Now your first object is eligible for garbage collection and will be destroyed in the nextGC cycle.