a) It can only contain one class declaration.
b) It can contain one public class declaration and one public interface definition.
c) It must define at least one public class.
d) It may define at most one public class.
d) It may define at most one public class.
A valid .java file may define any number of classes or interfaces. However, It can only have at most one public class. Thus, Options A, B, and C are incorrect. Option D is the only correct answer.
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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