Classes: Constructors

• Creating instance object of a class
• Use of new
• Constructors with 0 or more parameters (cf. overloaded methods) that initialise member variables
• Default constructor: member variables initialised to null values
• Not methods (Not class members)
• Constructor body starts with super(...): uses body of existing superclass constructor (if present); higher level initialisation done first; No such super() use in overriding methods
• Access specifiers: private (constructor not available outside the class); protected (constructors accessible by subclasses only), public (constructors available for object instantiation by other objects), package (default, access within the package containing it)
• Example: