Difference between revisions of "Instantiation"
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* Every constructor as its first statement has a call to this() or super(). | * Every constructor as its first statement has a call to this() or super(). | ||
* Compiler will only automatically insert call to no-arg super() or this(). | * Compiler will only automatically insert call to no-arg super() or this(). | ||
| − | * CANNOT call an instance method or access instance variables till the super constructor has run. | + | * '''CANNOT call an instance method or access instance variables till the super constructor has run.''' |
* Only Static variables can be accessed as a call to super() or this(). | * Only Static variables can be accessed as a call to super() or this(). | ||
Revision as of 05:12, 16 August 2011
Constructors
- Every class - including Abstract classes - MUST have a constructor.
- Constructor chaining is built in. Every class constructor will call its default superclass constructor using super().
- Every constructor as its first statement has a call to this() or super().
- Compiler will only automatically insert call to no-arg super() or this().
- CANNOT call an instance method or access instance variables till the super constructor has run.
- Only Static variables can be accessed as a call to super() or this().
