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Ch8 Java

38 Questions  I  By Bing22
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1.  The import declaration import java.util.*; is known as a ________.
A.
B.
C.
D.
2.  Abstract Data Types:
A.
B.
C.
D.
3.   Java programmers do not focus on:
A.
B.
C.
D.
4.   The import declaration import *; ________.
A.
B.
C.
D.
5.  8.5 Q2: Constructors:
A.
B.
C.
D.
6.   Instance variables declared final do not or cannot:
A.
B.
C.
D.
7.   Consider the statement    package com.deitel.jhtp6.ch08;    Which of the following is true?
A.
B.
C.
D.
8.  Which statement is false?
A.
B.
C.
D.
9.  When should a program explicitly use the this reference?
A.
B.
C.
D.
10.  Which of the following statements is true?
A.
B.
C.
D.
11.  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.
12.  Which of the following should usually be private?
A.
B.
C.
D.
13.  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.
14.  Having a this reference allows:
A.
B.
C.
D.
15.   Which syntax imports all static members of class Math?
A.
B.
C.
D.
16.  When implementing a method, use the class’s set and get methods to access the class’s ________ data.
A.
B.
C.
D.
17.   A programmer-defined constructor that has no arguments is called a ________.
A.
B.
C.
D.
18.  A package is:
A.
B.
C.
D.
19.   Composition is sometimes referred to as a(n) ________.
A.
B.
C.
D.
20.  A final field should also be declared ________ if it is initialized in its declaration.
A.
B.
C.
D.
21.   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.
22.  : enum types are implicitly ________ and enum constants are implicitly ________.
A.
B.
C.
D.
23.  Static class variables:
A.
B.
C.
D.
24.   A class within a package must be declared public if
A.
B.
C.
D.
25.  Which statement is false?
A.
B.
C.
D.
26.  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.
27.  The static method ________ of class String returns a formatted String.
A.
B.
C.
D.
28.   The term “information hiding” refers to:
A.
B.
C.
D.
29.  Which of the following is false?
A.
B.
C.
D.
30.   Which statement is false?
A.
B.
C.
D.
31.  Using public set methods provides data integrity if:
A.
B.
C.
D.
32.  Which of the following is false?
A.
B.
C.
D.
33.   Which of the following does not contribute to improved software reusability?
A.
B.
C.
D.
34.  Set methods are also commonly called ________ methods and get methods are also commonly called ________ methods.
A.
B.
C.
D.
35.  When no access modifier is specified for a method or variable, the method or variable:
A.
B.
C.
D.
36.   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.
37.   A constructor cannot:
A.
B.
C.
D.
38.  Which method returns an array of the enum’s constants?
A.
B.
C.
D.
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