Which is correct implementation code for the withdraw method...

Which is correct implementation code for the withdraw method in the CheckingAccount class? (A) super.withdraw(amount); if (balance $<$ MIN_BALANCE) super.withdraw(FEE); (B) withdraw(amount); if (balance $<$ MIN_BALANCE) withdraw(FEE); (C) super.withdraw(amount); if (getBalance() $<$ MIN_BALANCE) super.withdraw(FEE); (D) withdraw(amount); if (getBalance() $<$ MIN_BALANCE) withdraw(FEE) ; (E) balance $-=$ amount if (balance $<$ MIN_BALANCE) balance $\mathrm{FEE}$

Which is correct implementation code for the withdraw method in the CheckingAccount class?
(A) super.withdraw(amount);
if (balance $<$ MIN_BALANCE)
super.withdraw(FEE);
(B) withdraw(amount); if (balance $<$ MIN_BALANCE)
withdraw(FEE);
(C) super.withdraw(amount);
if (getBalance() $<$ MIN_BALANCE)
super.withdraw(FEE);
(D) withdraw(amount);
if (getBalance() $<$ MIN_BALANCE)
withdraw(FEE) ;
(E) balance $-=$ amount
if (balance $<$ MIN_BALANCE)
balance $\mathrm{FEE}$

Key Concepts

Inheritance

Inheritance is a fundamental concept in object-oriented programming that allows one class (the subclass) to inherit fields and methods from another class (the superclass). This mechanism promotes code reuse and a hierarchical organization of classes, enabling subclasses to build on or extend the functionality provided by their superclasses.

Method Overriding

Method overriding occurs when a subclass provides its own implementation of a method that is already defined in its superclass. This allows the subclass to modify or extend the behavior inherited from the superclass, which is essential for implementing specialized behaviors in a subclass without altering the general behavior defined in the superclass.

Using the super Keyword

The super keyword is used within a subclass to explicitly call methods or access variables defined in its superclass. This is useful when the subclass needs to invoke the original implementation from the superclass, especially in the context of overriding methods, ensuring that the inherited behavior is executed as part of the new implementation.

Encapsulation and Data Access

Encapsulation is the design principle that bundles the data (fields) and the methods that operate on the data into a single unit or class, while hiding the internal state of the object from external modification. Accessor methods like getters (e.g., getBalance()) are used to retrieve field values safely, thereby protecting the integrity of the object's state.

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