Given the fragment:

public class CustomerApplication { public static void main (String args[]) { CustomerDAO custDao= new CustomerDAOMemoryImpl(); // Line 3 // ... other methods } } Which two valid alternatives to line 3 would decouple this application from a specific implementation of CustomerDAO?

Question

Given the fragment:

public class CustomerApplication { public static void main (String args[]) { CustomerDAO custDao= new CustomerDAOMemoryImpl(); // Line 3 // ... other methods } } Which two valid alternatives to line 3 would decouple this application from a specific implementation of CustomerDAO?

Accepted Answer

B. CustomerDAO custDao = (CustomerDAO) new Object (); E. CustomerDAO custDao = customerDAOFactory.getInstance();

Answer

A. CustomerDAO custDao = CustomerDAO();

Answer

C. CustomerDAO custDao = CustomerDAO.getInstance();

Answer

D. CustomerDAO custDao = (CustomerDAO) new CustomerDAOmemoryImp1();

Given the fragment: public class CustomerApplication { public static void main (String args[]) { CustomerDAO custDao= new CustomerDAOMemoryImpl(); // Line 3 // ... other methods } } Which two valid…

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