a. A class containing abstract methods is called an abstract class.
b. Abstract methods should be implemented in the derived class.
c. An abstract class cannot have non-abstract methods.
d. A class must be qualified as ‘abstract’ class, if it contains one abstract method.
c. An abstract class cannot have non-abstract methods
An abstract class can contain both abstract and non-abstract methods. So, option c is not true and remaining all options are true.
a) lib b) package c) getlib d) import Answer d) import
a. ResultSet b. DriverManager c. Statement d. Connection Answer: b. DriverManager Explanation: DriverManager is a class that acts as an interface between users and Drivers. It
a) True b) False Answer b) False Explanation: A subtype is something that is substituted for and behaves as its parent type. All subclass may
i) It is used as its fundamental building block ii) Similar objects are classified using a concept of class iii) Polymorphism and abstraction are not
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