Download Ch8_quiz_classes

•
Classes and Objects: A Deeper Look quiz
1. Object Oriented Programming aims to Encapsulates data (attributes) and
methods (behaviors) ...
• TRUE
2. Classes are not units of Java programming and functions, or methods, are not
encapsulated in classes
• FALSE
3. public key is using when variables and methods accessible to clients of the
class;
• TRUE
4. What i the purpose of "this" keyword?
• Allows an object to refers to itself
5. What is the role of class contructor?
• to initialize instance variables of a class object
6. In Java we can use the overloaded constructor ...
• TRUE
7. Every class must have at least 2 constructors:
normal constructor and overloaded constructor
• FALSE
8. Accessor method (“get” or query method)
Allow clients to MODIFY private data;
• FALSE
9. Composition:
Class contains references to objects of other object?
• TRUE
10. What the role of garbage collection in java?
• Returns memory to system
11. Access to a class’s public static members:
Qualify the member name with the class name and a dot (.) e.g.,
Math.random()
12. The way we can use te static import ...
• import
static packageName.ClassName.staticMemberName
• import static packageName.ClassName.*;
13. final keyword indicates that variable is modifiable:
• FALSE
14. WE can not import package in program ...
• FALSE
15. If a variable or a method does not have member access modifier
-> package access
• TRUE