Ch8 Java

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Java Quizzes & Trivia

  
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1.  The import declaration import java.util.*; is known as a ________.
A.
B.
C.
D.
2.  Which of the following statements is true?
A.
B.
C.
D.
3.  When should a program explicitly use the this reference?
A.
B.
C.
D.
4.   A constructor cannot:
A.
B.
C.
D.
5.  Using public set methods provides data integrity if:
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B.
C.
D.
6.  Which of the following is false?
A.
B.
C.
D.
7.  8.5 Q2: Constructors:
A.
B.
C.
D.
8.   Composition is sometimes referred to as a(n) ________.
A.
B.
C.
D.
9.  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.
10.   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.
11.  The static method ________ of class String returns a formatted String.
A.
B.
C.
D.
12.  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.
13.  Which of the following should usually be private?
A.
B.
C.
D.
14.  When no access modifier is specified for a method or variable, the method or variable:
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B.
C.
D.
15.   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.
16.  Which statement is false?
A.
B.
C.
D.
17.  Having a this reference allows:
A.
B.
C.
D.
18.  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.
19.   Consider the statement    package com.deitel.jhtp6.ch08;    Which of the following is true?
A.
B.
C.
D.
20.  Set methods are also commonly called ________ methods and get methods are also commonly called ________ methods.
A.
B.
C.
D.
21.  Which method returns an array of the enum’s constants?
A.
B.
C.
D.
22.   Instance variables declared final do not or cannot:
A.
B.
C.
D.
23.   The term “information hiding” refers to:
A.
B.
C.
D.
24.   A programmer-defined constructor that has no arguments is called a ________.
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B.
C.
D.
25.   Which syntax imports all static members of class Math?
A.
B.
C.
D.
26.  Which statement is false?
A.
B.
C.
D.
27.   Which of the following does not contribute to improved software reusability?
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.  A package is:
A.
B.
C.
D.
30.   The import declaration import *; ________.
A.
B.
C.
D.
31.  Abstract Data Types:
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B.
C.
D.
32.   A class within a package must be declared public if
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B.
C.
D.
33.  : enum types are implicitly ________ and enum constants are implicitly ________.
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B.
C.
D.
34.  Static class variables:
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B.
C.
D.
35.   Java programmers do not focus on:
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B.
C.
D.
36.  Which of the following is false?
A.
B.
C.
D.
37.  A final field should also be declared ________ if it is initialized in its declaration.
A.
B.
C.
D.
38.   Which statement is false?
A.
B.
C.
D.
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