Question 1

When you invoke a method with a parameter, the value of the argument is passed to the parameter. This is referred to as _________. 
A) pass by name
B) pass by value
C) pass by reference
D) method invocation

Accepted Answer

When a method is invoked with a parameter, the value of the argument is copied into the parameter. This means that any changes made to the parameter within the method do not affect the original argument. This is known as pass by value. Pass by name and pass by reference are not used in Java. Method invocation is the act of calling a method.

Question 2

Analyze the following code: 
A) The program displays int followed by 5.
B) The program displays long followed by 5.
C) The program runs fine but displays things other than 5.
D) The program does not compile.

Accepted Answer

D

Question 3

A variable defined inside a method is referred to as __________. 
A) a local variable
B) a block variable
C) a global variable
D) a method variable

Accepted Answer

A variable defined inside a method is only accessible within that method, making it a local variable. Options B, C, and D do not accurately describe a variable defined inside a method.

Question 4

What is Math.rint(3.5)? 
A) 3
B) 5.0
C) 4
D) 3.0
E) 4.0

Accepted Answer

Math.rint() rounds the argument to the nearest integer. If the argument is exactly halfway between two integers, it rounds to the even integer. Therefore, 3.5 is rounded to 4.0.

Question 5

The signature of a method consists of ____________. 
A) method name and parameter list
B) return type, method name, and parameter list
C) parameter list
D) method name

Accepted Answer

The signature of a method in many programming languages, including Java, is defined by its method name and the parameter list (types and order of parameters). The return type is not considered part of the method signature.

Question 6

Which of the following should be declared as a void method? 
A) Write a method that returns a random integer from 1 to 100.
B) Write a method that prints integers from 1 to 100.
C) Write a method that checks whether current second is an integer from 1 to 60.
D) Write a method that converts an uppercase letter to lowercase.

Accepted Answer

A void method is one that doesn't return a value but performs a certain action. In this case, the only method that performs an action without returning a value is printing integers from 1 to 100, which is option B. Options A, C, and D all involve returning a value or checking a value without performing an action.

Question 7

Suppose  What is the printout of the call nPrint('a', 4)? 
A) aaaaa
B) aaaa
C) invalid call, because 'a' is a character, not a string.
D) aaa

Accepted Answer

The answer of Suppose  What is the printout of...

Question 8

__________. 
A) between 'a' and 'y'
B) between 'b' and 'z'
C) between 'b' and 'y'
D) between 'a' and 'z'

Accepted Answer

The answer of  __________. 
A) between 'a' and 'y'
B)...

Quiz 7: Multidimensional Arrays

When you invoke a method with a parameter, the value of the argument is passed to the parameter. This is referred to as _________.

Analyze the following code:

A variable defined inside a method is referred to as __________.

What is Math.rint(3.5) ?

The signature of a method consists of ____________.

Which of the following should be declared as a void method?

Suppose What is the printout of the call nPrint('a', 4) ?

__________.