summarizer 2 feb 2016
Class reference;
nullsometimes?
Class reference;new Instance;
its a operator
Class reference = new Instance();point create
re-points (assign)
simply a class that can’t be instantiated.
useful if you want to create a base structure for objects.
methods defined, with a signature
but not implemented.
a class with a abstract method must be defined as abstract.
why? can’t remember…
The big O(bject)In the beginning was the Object, and the Object was with God,
and the Object was God.
operatorinstanceof
checks if a reference points to a class
o Class
finallyCar Crash!
hours later…we managed
to move them!