Fundamentals Final (ch 1-7)
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- 1.This is how you create a Java multi-line comment to place the following into a comment. /* Replace the image on the screen and then move it right 10 pixels */
- A.
True
- B.
False
- 2.Suppose you are given a variable named temperature that holds a value. This is how you would write an if-else statement that will display Above Freezing if temperature is greater than 32, Freezing if temperature is equal to 32, else it will display At or Below Freezing. if (temperature > 32) System.out.println("Above Freezing"); else (temperature == 32) System.out.println("Freezing"); else System.out.println("At or Below Freezing");
- A.
True
- B.
False
- 3.Simplify the following expressions to either true or false: Given: x is an integer variable holding the value 3 y is an integer variable holding the value -5 z is an integer variable holding the value -4 (x > z) || (y < z) && !(y < x)
- A.
True
- B.
False
- 4.True of False. Java is not case-sensitive
- A.
True
- B.
False
- 5.This is how you write an if-else statement that will display JCCC 45% of the time, else it will display Cavaliers. if (Greenfoot.getRandomNumber(100) < 45) System.out.println("JCCC"); else System.out.println("Cavaliers");
- A.
True
- B.
False
- 6.Write a statement that will declare an integer instance variable called count and set its initial value to 0.
- A.
Public int count = 0;
- B.
Public count = 0;
- C.
Public void count();
- 7.To pass additional data to a method we specify a
- A.
Return type
- B.
Name
- C.
Parameter
- D.
Parenthesis
- 8.A compiler
- A.
Translates source code into executable code
- B.
Tests a program's logic
- C.
Translates executable code to machine code
- D.
Maintains a collection of programs
- 9.In object-oriented programming a class is
- A.
A group of people sharing the same relationship to the means of production.
- B.
A procedure for a calculation inside a program.
- C.
The term used for programs
- D.
A model or template from which objects are created
- 10.Write one statement that declares a local variable named city and initializes it to Overland Park.
- A.
String city = “Overland Park”;
- B.
String[“Overland Park];
- C.
City = “Overland Park”;
- 11.The best example for the correct way to name a class is
- A.
Bank account
- B.
BankAccount
- C.
Bank_Account
- D.
BankAccount
- 12.Write a method signature for a method named "randomMove". The method has no parameters, and it does not return a value.
- A.
Public randomMove()
- B.
Public void randomMove()
- C.
Public void randomMove
- 13.What the value of x is at the end: int i=0; int x=0; while (i < 4) { x = x + i; i++; }
- A.
1
- B.
2
- C.
3
- D.
4
- 14.Given the following variable declarations, evaluate the following Boolean expression: int a= 7; int b = 12; int c = 12; int d = 7; (a ==c ||a ==b)
- A.
True
- B.
False
- 15.Variable Declarations need a data type and a variable name
- A.
True
- B.
False
- 16.Which of the following is not a data type in Java?
- A.
Int
- B.
Double
- C.
Boolean
- D.
String
- E.
Constant
- 17.An identifier can be named in Java using letters, digits, underscores and the $ sign. They may not begin with an underscore.
- A.
True
- B.
False
- 18.Mark the following identifiers that are valid names to use in Java.
- A.
7days
- B.
_days
- C.
NumDays
- D.
$days
- E.
Num.days
- 19.Which is the best declaration for a variable that will hold monthly rainfall. It is initialized to 0?
- A.
Float totalMonthlyRainfall = 0.0 ;
- B.
Int totalMonthlyRainfall = 0;
- C.
Float totalMonthlyRainfall;
- D.
Int totalMonthlyRainfall;
- 20.Practice with logical operators Given: int age1 = 21; int age2 = 14; int age3 = 15; int birth = 0; String name = “JCCC”; age1 < age2 && age2 < age3
- A.
True
- B.
False
- 21.Given the code below, what are the local variables? public class MathStudent extends Actor { protected String firstName; protected String lastName; public MathStudent() { firstName = ""; lastName = ""; } public void countToFive() { int i = 1; int limit = 5; while (i <= 5) { System.out.println(i); i = i + 1; } } }
- A.
FirstName, lastName
- B.
Limit, i
- C.
FirstName, lastName, limit, i
- 22.Mark the arrays that are declared correctly by good programming standard.
- A.
Int[] scores;
- B.
Int scores [];
- C.
Float[] rates;
- D.
Float rates [];
- 23.Declare and create a new array of 5 elements for a scores array.
- A.
Int[] scores = new int[5];
- B.
Int[5] scores = new int[];
- C.
Int scores = new int[5];
- 24.Write a line of code to change the element at index 3 to 5 in the scores array.
- A.
Scores[3] = 5;
- B.
Scores[5] = 0;
- C.
Scores[5] = 5;
- 25.Objects are created from
- A.
Methods
- B.
Classes
- C.
Parameters
- D.
Commands
- 26.Objects have several ___________ that are blocks of code that perform specific tasks or actions.
- A.
Methods
- B.
Classes
- C.
Instances
- D.
Parameters
- 27.This specifies what type of data a method call with return:
- A.
Parameters
- B.
Commands
- C.
Class type
- D.
Return type
- 28.The mechanism that is used to pass additional information to a method is called a:
- A.
Command
- B.
Parameter
- C.
Return type
- D.
Signature
- 29.The specification of a method, which shows its return type, name and parameters is called its:
- A.
Command
- B.
Parameter
- C.
Return type
- D.
Signature
- 30.Another name for an objects is an:
- A.
Class
- B.
Command
- C.
Method
- D.
Instance
- 31.An instruction that tells an object to perform a specific task it has programming code to do is called a:
- A.
Parameter
- B.
Command
- C.
Method call
- D.
Instance
- 32.The command that allows you to make a decision based on true or false conditions is a(n):
- A.
List command
- B.
Do command
- C.
Act statement
- D.
If statement
- 33.When you need to call a method from a different class you must specify the class name before the method name using:
- A.
Dot notation
- B.
Parenthetical citation
- C.
Curly braces
- D.
Spaces
- 34.Methods that belong to the class itself are marked with the keyword:
- A.
Void
- B.
Public
- C.
Static
- D.
General
- 35.By convention, class names in Java should always start with a:
- A.
Capital letter
- B.
Small letter but use capital letters for the beginning of words in the middle of it
- 36.This default Greenfoot method is automatically created in each new class and is what is executed when you click on Act or Run in the window:
- A.
CanSee()
- B.
Move()
- C.
Run()
- D.
Act()
- 37.Comments are ignored by the computer but necessary for documentation for the user and they are started with:
- A.
/**
- B.
(
- C.
{
- D.
- 38.By convention, method names in Java should always start with a:
- A.
Capital letter
- B.
Small letter but use capital letters for the beginning of words with no spaces (camel casing)
- 39.A bit of memory that belongs to an object to store information is called a:
- A.
Method call
- B.
Instance variable
- C.
Return type
- 40.Good Java coding practice dictates that we should declare all of our variables:
- A.
At the top of the class
- B.
Inside of the method that it is going to be used in
- C.
At the end of the class
- 41.An assignment statement enables us to store something into a variable. The symbol that allows us to do that is:
- A.
!=
- B.
=
- C.
==
- D.
/=
- 42.This statement can be added to the IF statement to specify what should happen if the condition is false:
- A.
When
- B.
While
- C.
Do
- D.
Else
- 43.Putting this symbol in front of something means NOT:
- A.
. (dot
- B.
! (exclamation mark)
- C.
^(caret)
- D.
–(dash)
- 44.These symbols mean AND, which will join two conditions:
- A.
&&
- B.
!!
- C.
||
- D.
- 45.When we need to repeat code or do a similar task repeatedly, we need a:
- A.
Constant
- B.
Loop
- C.
Modifier
- D.
Instance
- 46.This type of data structure allows us to store many values of the same type and access them using an index, like this whiteKeys[2], which would access the third element:
- A.
String
- B.
Array
- C.
Double
- D.
Constant
- 47.A special expression that means “nothing” or “no object” is:
- A.
Null
- B.
Private
- C.
Static
- D.
Boolean
- 48.A method with a void return type does not return a value.
- A.
True
- B.
False
- 49.Actors are classes that are placed into the world
- A.
True
- B.
False
- 50.Computers do not understand source code that we type in so it needs to be translated into machine code by a compiler before being executed.
- A.
True
- B.
False
- 51.Java is very case dependent, so Body and body represent two different things.
- A.
True
- B.
False
- 52.Objects will inherit methods from its superclasses.
- A.
True
- B.
False
- 53.Anything stored in an instance variable will be remembered as long as the object exists and can be accessed later.
- A.
True
- B.
False
- 54.A constant is a named value that is used like a variable, but can only be changed by other classes.
- A.
True
- B.
False
- 55.Methods with void return types represent
- A.
Commands
- B.
Questions
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