Which keyword is used to refer to the immediate parent class object in java?Question 17Answera.thatb.superc.thisd.parent

Super keyword in java is used toSelect one:Refer immediate parent class instance variables.Invoke immediate parent class methods.Invoke immediate parent class constructor.All

What Java keyword is used to call the parent constructor from the child constructor?Group of answer choicessuperNone of the aboveextendsclassthis

Which java keyword is used to inherit a class in Java?Question 18Answera.extendsb.derivesc.inheritsd.implements

Which of the following code snippets is VALID regarding the use of a parent (superclass) reference for holding objects of its child class?Group of answer choicesAnimal animal = new Dog();List<Animal> animalList = new ArrayList<Animal>();animalList.add(new Dog());Animal animal = new Dog();List<Dog> dogList = new ArrayList<Animal>();Animal animal = new Dog();List<Dog> dogList = new ArrayList<Dog>();dogList.add(new Animal());Animal animal = new Dog();List<Animal> animalList = new ArrayList<Dog>();

a.It is used to call a constructor of the superclass. b.It can be used to call a static method in the superclass.c.It must always be the first line of code in a constructor. d.It can only be used in a subclass.