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Developing Object-Oriented Applications with Java for Procedural Developers Pre Test

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Question Title

* 1. Which of the following is the best definition of Encapsulation?

Private Data, Public Methods

Public Data, Private Methods

Private Interfaces, Private Classes

Private Interfaces, Public Classes

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* 2. Which of the following is the correct definition of UML?

Unified Modeling Language

United Modeling Language

Unified Model Language

United Model Language

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* 3. When is the Constructor invoked?

Only the first time that Class is loaded into memory

Every time that Class is referred to in code

Only when an Object of that Class is instantiated

Never, a Constructor is never invoked

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* 4. What is Object Persistence?

Creating Objects from a Database Record

Creating Objects from an XML Configuration File

Saving Objects to maintain the state of the Object

Saving Objects as Object Graphs

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* 5. Inheritance and Composition are the same thing.

True

False

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* 6. Which comes first when “Thinking in Terms of Objects”?

The Implementation

The Interface

Object Persistence

Object References

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* 7. Java Supports Multiple Inheritance

True

False

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* 8. What are “Accessors”?

Methods to Set an Attribute

Methods to Get an Attribute

Public Attributes

Protected Attributes

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* 9. A Java String is an Object.

True

False

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* 10. What is Polymorphism?

Object method selection via Overriding

Object construction via Accessors

Object specialization via Inheritance

Object Persistence via Databases

Do not know