Consider the constructor of the BankAccount class that has a parameter for the initial balance.Which line of code is equivalent to this constructor body?
balance = initialBalance;
A)this.balance = initialBalance;
B)this.initialBalance = balance
C)balance = this.initialBalance;
D)this.balance = this.initialBalance;

Question

Quizplus · Accepted Answer

Since the constructor has a parameter called initialBalance, we need to assign that value to the instance variable called balance. In option A, we are correctly assigning the value of initialBalance to balance using the "this" keyword to refer to the instance variable. Therefore, option A is the correct line of code to use in the constructor. Option B is assigning the value of balance, which is not what we want, and option C is assigning the value of this.initialBalance, which is not initialized yet. Option D is almost correct, but it is using an unnecessary "this" keyword.

Consider the Constructor of the BankAccount Class That Has a Parameter