Constructor
A constructor is a function that initializes a newly allocated object.
Related concepts: ClassObjectMethod
Closest Wikipedia entry: Constructor (object-oriented programming)
Misconceptions about Constructor18 documented Misconceptions
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AllClassesHaveDefaultConstructor
All classes automatically get a no-argument constructorCannotChainMemberToConstructor
Method calls or field accesses cannot be chained to a constructor invocationConstructorAllocates
The constructor allocates the objectConstructorParameterIsField
Formal constructor parameters are equivalent to instance variablesConstructorReturnsObject
Constructors need to return objectsConstructorWithoutNew
One can write the constructor name, without new, to instantiate a classImmutableRequiresFinalParameters
Immutable classes need final constructor/method parametersMustInitializeFieldInConstructor
Constructors must assign values to all fieldsNoEmptyConstructor
A constructor must do somethingNoInsideMethodCallInConstructor
It is foirbidden to call other methods on the same object while inside its constructorObjectLabeledWithConstructorSignature
In stack and heap diagrams, an object on the heap is labeled like a stack frame of a constructor callObjectsMustBeNamed
A variable is needed to instantiate an objectThisInConstructorIsNull
In a constructor, this is null