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Interpret which of the following statements are correct with respect to inheritance relationship in java?    Select one or more:a.object of subclass referenced by super class type can access super class variablesb.object of subclass referenced by super class type can invoke newly defined sub class methodsc.object of subclass referenced by super class type can access newly defined sub class variablesd.object of subclass referenced by super class type can invoke super class methodse.object of subclass referenced by super class type can invoke overridden sub class methods

Question

Interpret which of the following statements are correct with respect to inheritance relationship in java?    Select one or more:a.object of subclass referenced by super class type can access super class variablesb.object of subclass referenced by super class type can invoke newly defined sub class methodsc.object of subclass referenced by super class type can access newly defined sub class variablesd.object of subclass referenced by super class type can invoke super class methodse.object of subclass referenced by super class type can invoke overridden sub class methods

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Solution

In Java, the concept of inheritance allows a class to inherit properties and behavior from another class. Here's the interpretation of the given statements:

a. Object of subclass referenced by super class type can access super class variables - This statement is correct. A subclass can access the public and protected members (variables and methods) of the superclass.

b. Object of subclass referenced by super class type can invoke newly defined subclass methods - This statement is incorrect. If the object is referenced by the superclass type, it can only invoke methods that are declared in the superclass, not the ones newly defined in the subclass.

c. Object of subclass referenced by super class type can access newly defined subclass variables - This statement is incorrect. Similar to the above, an object of subclass referenced by super class type cannot access variables that are newly defined in the subclass.

d. Object of subclass referenced by super class type can invoke superclass methods - This statement is correct. A subclass object referenced by superclass type can invoke the methods of the superclass.

e. Object of subclass referenced by super class type can invoke overridden subclass methods - This statement is correct. If a subclass overrides a method from the superclass, then the object of subclass referenced by super class type will invoke the overridden method in the subclass. This is due to the concept of dynamic method dispatch or runtime polymorphism in Java.

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