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The Papaer Java Test Questions and Answers

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Gaddis – Starting Out With Java 5 – From Control Structures to Objects
Chapter 06 – A First Look At Classes

Multiple Choice

1. One or more objects may be created from a(n)_____.
a. field
b. class
c. method
d. instance

ANS: B

2. Class objects normally have _____ that perform useful operations on their data, but primitive variables do not.
a. fields
b. instances
c. methods
d. relationships

ANS: C

3. In the cookie cutter method: Think of the _____ as a cookie cutter and _____ as the cookies.
a. object; classes
b. class; objects
c. class; fields
d. field; methods

ANS: B

4. A UML diagram does not contain _____.
a. class name
b. methods
c. fields
d. object names

ANS: D

5. An access specifier …show more content…

object name; fields; methods
d. object name; methods; fields

ANS: A

25. The public access specifier for an field indicates that the field may not be accessed by statements outside the class.
a. True
b. False

ANS: B

26. For the following code, which statement is not true? public class Circle
{
private double radius; public double x; private double y;
}
a. x is available to code that is written outside the Circle class.
b. radius is not available to code written outside the Circle class.
c. radius, x, and y are called members of the Circle class.
d. y is available to code that is written outside the Circle class.

ANS: D

27. It is common practice in object-oriented programming to make all of a class’s _____.
a. methods private
b. fields private
c. fields public
d. fields and methods public

ANS: B

28. After the header, the body of the method appears inside a set of
a. brackets, []
b. paretheses, ()
c. braces, {}
d. double quotes, “”

ANS: C

29. A method that gets a value from a class’s field but does not change it is known as a mutator method.
a. True
b. False

ANS: B

30. In UML diagrams, a ____ indicates the member is private and a _____ indicates the member is public.
a. *; /
b. #; @
c. –; +
d. (); :

ANS: C

31. In a UML diagram to indicate the data type of a variable enter
a. the variable name followed by the data type
b. the variable name followed by a colon and the data type
c. the

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