Question 1

With ____, if a programmer changes the way in which a method internally works, programs that use that method will not be affected and will not need to be modified.
A) overloading
B) implementation hiding
C) polymorphism
D) inheritance

Accepted Answer

Implementation hiding is the concept of hiding the internal details of a class or method so that changes to those details do not affect other programs or parts of the code that use the class or method. This is achieved through the use of access modifiers such as private or protected, and through encapsulation. Overloading, polymorphism, and inheritance are all concepts that focus on the behavior and functionality of a class or method, and do not necessarily guarantee that changes to the internal workings will not affect other parts of the code.

Question 2

Because the ReadLine() method call can be assigned to a string, its return type is ____ .
A) int
B) Object
C) bool
D) string

Accepted Answer

The ReadLine() method call returns a string value that can be assigned to a string variable. Therefore, the return type of ReadLine() is a string.

Question 3

The type of an argument in a method call must exactly match the type of the corresponding parameter specified in the method declaration.

Accepted Answer

False

Question 4

If you use the keyword modifier ____, you indicate that a method can be called by referring to the class rather than an object from the class.
A) static
B) internal
C) protected
D) nonstatic

Accepted Answer

The keyword modifier for indicating that a method can be called by referring to the class rather than an object from the class is "static".

Question 5

A method ____ is a variable that holds data passed to the method when it is called; it receives an argument's value when the method executes.
A) element
B) parameter
C) literal
D) declaration

Accepted Answer

A parameter is a variable declared in a method's signature and receives an argument's value when the method is called, allowing for dynamic input to the method's logic.

Question 6

The ____ accessibility modifier allows access to a method from other classes.
A) public
B) protected
C) private
D) protected internal

Accepted Answer

The public accessibility modifier allows access to a method from other classes.

Question 7

A program element's ____ is the segment of code in which it can be used.
A) scope
B) locality
C) accessibility
D) nesting

Accepted Answer

The scope of a program element determines where it can be used or accessed within the program. This includes both the physical location within the code, as well as the level of nesting or hierarchy within the program structure. The scope can be local or global, depending on how the element is defined and where it is declared.

Question 8

A declaration for a method that receives two or more arguments must list the type for each parameter separately only if the parameters have different types.

Accepted Answer

The answer of A declaration for a method that receives...

Question 9

A parameter within a method header is called a(n) ____ parameter.
A) formal
B) local
C) global
D) actual

Accepted Answer

A parameter within a method header is called a formal parameter. This is because formal parameters are declared within the method header and serve as placeholders for values that will be passed as arguments when the method is called.

Question 10

A method can return, at most, one value to a method that calls it.

Accepted Answer

A method in Java can only return one value at a time to the calling method. This value can be of any data type, including primitive types, object types or arrays. However, a method cannot return multiple values directly. To return multiple values, you can use arrays, objects or collections.

Question 11

To more easily incorporate methods into a program, it is common practice to store methods in their own classes and files. Then you can add them into any application that uses them. The resulting compound program is called a(n) ____.
A) interface
B) multifile assembly
C) hid assembly
D) hid implementation

Accepted Answer

Storing methods in their own classes and files allows for easier incorporation into programs, and the resulting compound program is called a multifile assembly. Option A is incorrect because an interface refers to a set of methods that can be implemented by a class. Option C is incorrect because HID stands for Human Interface Device, and has nothing to do with storing methods in separate classes and files. Option D is incorrect because HID implementation is not a common programming term.

Question 12

A(n) ____ is a device you can use without knowing how it works internally.
A) white box
B) interface
C) black box
D) method

Accepted Answer

A black box is a term used to describe a device or system whose internal workings are not visible to the user. The user only interacts with the inputs and outputs of the device without needing to understand how it works internally. A white box, on the other hand, is a device whose internal workings are visible and accessible to the user. An interface is a means of communication between different components or systems. A method is a code block that can be called to perform a specific task in a program.

Question 13

Methods can ____, or call, other methods; that is, a program uses a method's name and the method performs a job for the class.
A) instantiate
B) overload
C) inherit
D) invoke

Accepted Answer

The term "invoke" means to call or activate a method in programming, which matches the description provided in the statement. Therefore, the correct choice is D, invoke.

Question 14

The ____ accessibility modifier limits method access to the class that contains the method.
A) protected
B) private
C) protected internal
D) internal

Accepted Answer

Private accessibility modifier limits the method access only to the class that contains the method. Protected, protected internal, and internal accessibility modifiers allow certain levels of access to other classes as well.

Question 15

If you do not provide an accessibility modifier for a method, it is private by default.

Accepted Answer

The answer of If you do not provide an accessibility...

Question 16

A method that uses another is called a ____ of the method it uses.
A) peer
B) server
C) pair
D) client

Accepted Answer

A method that uses another method is called a client of the method it uses. The client method sends a request to the server method and waits for a response.

Question 17

The number of arguments does not need to match the number in the parameter list when you use ____.
A) default arguments
B) value parameters
C) scope relaxation
D) non-critical parameters

Accepted Answer

When using default arguments, you can specify default values for parameters so that if the argument is not provided, the default value will be used instead. This means that you can call the function with fewer arguments than listed in the parameter list, and the default values will be used for the missing arguments. Therefore, the number of arguments does not need to match the number in the parameter list.

Question 18

Arrays, like all objects, are passed by value.

Accepted Answer

Arrays are passed by reference in many programming languages, including Java.

Question 19

The optional declared ____ for a method (for example, public ) sets limits as to how other methods can use it.
A) protection
B) qualifier
C) accessibility
D) type

Accepted Answer

The accessibility modifier (public, private, protected) determines the level of access other classes have to the method. The other choices are not applicable to this context.

Question 20

A formal parameter that receives a copy of the value passed to it is also an example of a(n) ____ parameter.
A) reference
B) output
C) input
D) value

Accepted Answer

A formal parameter that receives a copy of the value passed to it is an example of a value parameter. Value parameters make a copy of the data passed to them, so any changes made to the parameter inside the function do not affect the original data outside of the function.

Quiz 7: Using Methods

With ____, if a programmer changes the way in which a method internally works, programs that use that method will not be affected and will not need to be modified.

Because the ReadLine() method call can be assigned to a string, its return type is ____ .

The type of an argument in a method call must exactly match the type of the corresponding parameter specified in the method declaration.

If you use the keyword modifier ____, you indicate that a method can be called by referring to the class rather than an object from the class.

A method ____ is a variable that holds data passed to the method when it is called; it receives an argument's value when the method executes.

The ____ accessibility modifier allows access to a method from other classes.

A program element's ____ is the segment of code in which it can be used.

A declaration for a method that receives two or more arguments must list the type for each parameter separately only if the parameters have different types.

A parameter within a method header is called a(n) ____ parameter.

A method can return, at most, one value to a method that calls it.

To more easily incorporate methods into a program, it is common practice to store methods in their own classes and files. Then you can add them into any application that uses them. The resulting compound program is called a(n) ____.

A(n) ____ is a device you can use without knowing how it works internally.

Methods can ____, or call, other methods; that is, a program uses a method's name and the method performs a job for the class.

The ____ accessibility modifier limits method access to the class that contains the method.

If you do not provide an accessibility modifier for a method, it is private by default.

A method that uses another is called a ____ of the method it uses.

The number of arguments does not need to match the number in the parameter list when you use ____.

Arrays, like all objects, are passed by value.

The optional declared ____ for a method (for example, public ) sets limits as to how other methods can use it.

A formal parameter that receives a copy of the value passed to it is also an example of a(n) ____ parameter.