It is required if the parameterized constructor (a constructor that takes arguments) of the superclass has to be called from the subclass constructor . The parameterized super() must always be the first statement in the body of the constructor of the subclass, otherwise, we get a compilation error.
Read moreDo subclasses need super?
You need a call to super() if and only if there’s no default constructor (accepting no arguments) for your parent class . In all other cases (where a constructor with zero arguments exists) you don#t have to code it.
Read moreWhat happens if you do not call super () in the subclass constructor?
If a constructor does not explicitly invoke a superclass constructor, the Java compiler automatically inserts a call to the no-argument constructor of the superclass . If the superclass does not have a no-argument constructor, you will get a compile-time error.
Read moreWhat happens if a child class constructor doesn’t have a super () method?
If we call “super()” without any superclass Actually, nothing will be displayed . Since the class named Object is the superclass of all classes in Java. If you call “super()” without any superclass, Internally, the default constructor of the Object class will be invoked (which displays nothing).2 Tem 2019
Read moreIs super constructor always called?
Super class constructor is always called during construction process and it’s guaranteed that super class construction is finished before subclass constructor is called. This is the case for most if not all the object oriented language.
Read moreCan we call a subclass constructor from the superclass constructor?
No, we cannot call subclass constructor from superclass constructor .
Read moreIs it necessary to call super constructor in Java?
There is an implicit call to super() with no arguments for all classes that have a parent – which is every user defined class in Java – so calling it explicitly is usually not required . However, you may use the call to super() with arguments if the parent’s constructor takes parameters, and you wish to specify them.
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