A subclass needs a constructor if the superclass does not have a default constructor (or has one that is not accessible to the subclass). If the subclass has no constructor at all, the compiler will automatically create a public constructor that simply calls through to the default constructor of the superclass.
Read moreDoes subclass need constructor?
A subclass needs a constructor if the superclass does not have a default constructor (or has one that is not accessible to the subclass). If the subclass has no constructor at all, the compiler will automatically create a public constructor that simply calls through to the default constructor of the superclass.
Read moreCan a subclass have its own constructor?
A subclass can have its own private data members, so a subclass can also have its own constructors . The constructors of the subclass can initialize only the instance variables of the subclass. … To call a superclass constructor the super keyword is used.
Read moreCan a subclass have its own constructor?
A subclass can have its own private data members, so a subclass can also have its own constructors . The constructors of the subclass can initialize only the instance variables of the subclass. … To call a superclass constructor the super keyword is used.
Read moreCan a subclass have its own constructor?
A subclass can have its own private data members, so a subclass can also have its own constructors . The constructors of the subclass can initialize only the instance variables of the subclass. … To call a superclass constructor the super keyword is used.
Read moreWhat are constructors in subclass?
Subclass Constructors. This constructor explicitly initializes the cx and cy fields newly defined by PlaneCircle , but it relies on the superclass Circle() constructor to initialize the inherited fields of the class. To invoke the superclass constructor, our constructor calls super(). super is a reserved word in Java.
Read moreWhat are constructors in subclass?
Subclass Constructors. This constructor explicitly initializes the cx and cy fields newly defined by PlaneCircle , but it relies on the superclass Circle() constructor to initialize the inherited fields of the class. To invoke the superclass constructor, our constructor calls super(). super is a reserved word in Java.
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