Ch8 Java

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Java Quizzes & Trivia

  
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1.   Instance variables declared final do not or cannot:
A.
B.
C.
D.
2.  Which statement is false?
A.
B.
C.
D.
3.   Consider the statement    package com.deitel.jhtp6.ch08;    Which of the following is true?
A.
B.
C.
D.
4.   Which of the following does not contribute to improved software reusability?
A.
B.
C.
D.
5.  8.5 Q2: Constructors:
A.
B.
C.
D.
6.   The term “information hiding” refers to:
A.
B.
C.
D.
7.  Which of the following statements is true?
A.
B.
C.
D.
8.   A class within a package must be declared public if
A.
B.
C.
D.
9.  Static class variables:
A.
B.
C.
D.
10.  Which of the following is false?
A.
B.
C.
D.
11.   A constructor cannot:
A.
B.
C.
D.
12.   Java programmers do not focus on:
A.
B.
C.
D.
13.  A package is:
A.
B.
C.
D.
14.   What happens when this is used in a constructor’s body to call another constructor of the same class if that call is not the first statement in the constructor?
A.
B.
C.
D.
15.  Set methods are also commonly called ________ methods and get methods are also commonly called ________ methods.
A.
B.
C.
D.
16.  When should a program explicitly use the this reference?
A.
B.
C.
D.
17.  The classpath consists of a list of directories or archive files, each separated by a ________ on Windows or a ________ on UNIX/Linux/Max OS X.
A.
B.
C.
D.
18.  Which method returns an array of the enum’s constants?
A.
B.
C.
D.
19.  The static method ________ of class String returns a formatted String.
A.
B.
C.
D.
20.  Abstract Data Types:
A.
B.
C.
D.
21.  Which of the following should usually be private?
A.
B.
C.
D.
22.  Having a this reference allows:
A.
B.
C.
D.
23.  Which of the following is false?
A.
B.
C.
D.
24.  8.2 Q1: The _________ of a class are also called the public services or the public interface that the class provides to its clients.
A.
B.
C.
D.
25.   By default, the classpath consists only of the ________. However, the classpath can be modified by providing the ________ option to the javac compiler.
A.
B.
C.
D.
26.  : enum types are implicitly ________ and enum constants are implicitly ________.
A.
B.
C.
D.
27.  The import declaration import java.util.*; is known as a ________.
A.
B.
C.
D.
28.  When implementing a method, use the class’s set and get methods to access the class’s ________ data.
A.
B.
C.
D.
29.   Which statement is false?
A.
B.
C.
D.
30.  When no access modifier is specified for a method or variable, the method or variable:
A.
B.
C.
D.
31.   Which syntax imports all static members of class Math?
A.
B.
C.
D.
32.   A programmer-defined constructor that has no arguments is called a ________.
A.
B.
C.
D.
33.  When compiling a class in a package, the javac command-line option ________ causes the javac compiler to create appropriate directories based on the class’s package declaration.
A.
B.
C.
D.
34.  Which statement is false?
A.
B.
C.
D.
35.  Using public set methods provides data integrity if:
A.
B.
C.
D.
36.   Composition is sometimes referred to as a(n) ________.
A.
B.
C.
D.
37.  A final field should also be declared ________ if it is initialized in its declaration.
A.
B.
C.
D.
38.   The import declaration import *; ________.
A.
B.
C.
D.
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