Consider the following code snippet:
Which of the following statements correctly clones the account?
A)BankAccount clonedAccount = Object.clone(account);
B)BankAccount clonedAccount = account.super.clone();
C)BankAccount clonedAccount = account.clone();
D)BankAccount clonedAccount = (BankAccount) account.clone();

Question

Consider the following code snippet:  
Which of the following statements correctly clones the account? 
A)BankAccount clonedAccount = Object.clone(account); 
B)BankAccount clonedAccount = account.super.clone(); 
C)BankAccount clonedAccount = account.clone(); 
D)BankAccount clonedAccount = (BankAccount) account.clone();

Quizplus · Accepted Answer

Option D is the correct choice because clone() is a protected method of Object class, and the BankAccount class must override this method to make it public. Therefore, when cloning an object, we must cast it to the appropriate class, which in this case is BankAccount. Options A and B are incorrect because the clone() method cannot be called on an object in this way. Option C is incorrect because without overriding the clone() method in the BankAccount class, clone() would still be a protected method in the Object class and cannot be called from outside the class.

Consider the Following Code Snippet