Inheritance in Object-Oriented Programming

By creating test cases comparing its output with known results.

By making all methods abstract in the parent class.

By using only default constructors in both classes during testing

By deleting other methods in the subclass temporarily.

The variables from the superclass are not initialized.

The subclass fails to compile until a call to the superclass’s constructor is added.

An exception is thrown at runtime due to incomplete object construction.

The default no-argument superclass constructor is called automatically.

There is no requirement and depends on the subclass one wants to write.

Zero parameters.

Four parameters.

Two parameters.

Declare a new method with only a matching name but different parameters

Use super.methodName() within the new method to indicate an override

Change the method’s return type to differentiate it from that of its superclass

Provide a method with the same signature and return type as in its superclass

Use super() with arguments followed by subclass-specific initializations.

Assume that all initialization is done automatically without needing super().

Arrange for the superclass constructor to call subclass constructors.

Rely solely on default constructors without parameters or separate initializations.

class

extends

super

this

Obtain inputs through parameters

Leave out an explicit method declaration

Do not include data types

Add parameters outside parentheses

Add assertion statements at the end of both super and subclass constructors testing post-conditions prior to object release.

Include invariant check in separate public method called immediately after object creation on client side instead.

Assert condition using static block initially during class loading phase ensuring setup before any construction happens.

Invoke method enforcing invariant within this very constructor after calling superclass constructor but before completing current one.

Vehicle being final or concrete enough so no further inheritance can take place

Car lacking default constructor though Vehicle provides one.

Vehicle having conflicting non-final static fields shared among different classes.

Vehicle having too many methods making complexity high preventing easy inheritance.

Inside the subclass's constructor before calling the superclass constructor with valid parameters.

Before instantiation of any objects from either superclass or subclass within client code.

Inside a separate method called by the superclass constructor after initialization.

After initializing all properties in both superclass and subclass constructors.