Consider the following code snippet.
Which of the following statements is correct?
A)Coin dime = new Coin(0.1, "dime"); BankAccount b= (Measureable)dime;
B)Measureable m= new BankAccount (1000); BankAccount b=m ;
C)Coin dime = new Coin(0.1 , "dime"); Measurable m= dime;
D)Measurable m= new Coin(0.1 , "dime"); Coin dime =m ;

Question

Consider the following code snippet. 
Which of the following statements is correct?
A)Coin dime = new Coin(0.1, "dime"); BankAccount b= (Measureable)dime; 
B)Measureable m= new BankAccount (1000); BankAccount b=m ; 
C)Coin dime = new Coin(0.1 , "dime"); Measurable m= dime; 
D)Measurable m= new Coin(0.1 , "dime"); Coin dime =m ;

Quizplus · Accepted Answer

In this code snippet, the Coin class implements the Measurable interface, which means any object of the Coin class can be assigned to a variable of type Measurable. Option C creates a Coin object called dime and assigns it to a Measurable variable called m, which is valid since Coin implements Measurable. Option A is not valid because BankAccount does not implement Measurable, so we cannot cast Coin to BankAccount as a Measurable. Option B is also not valid because the BankAccount constructor does not take a measureable parameter, so we cannot create a Measurable object and then assign it to a BankAccount variable. Option D is not valid because we cannot assign a Measurable object to a Coin variable since the Measurable interface does not provide the methods required for a Coin object.

Consider the Following Code Snippet