Loops
Classes
Arrays
Inheritance
Misc.
100
What are the three types of loops?
For
While
Do-while
100
In object oriented programming, what is a class?
A category/ blueprint for creating objects
100
int[] grades = {42, 75, 84, 92, 77};
What is the value at grades[1] ?
75
100
What keyword is used in inheritance?
extends
100
What is a logical error?
When the output of the code doesn't match what the programmer expects
200
What are the three parts of a for loop?
for(??? ; ??? ; ???)
Starting point, end condition and increment.
200
In object oriented programming, what is an object?
A specific instance of a class
200
Declare an array of doubles called measures with 5 rows and 4 columns.
double[] measures = new double[5][4];
200
What keyword is used for the instance variables of a parent class?
protected
200
What is the name of the import we need when formatting currency?
NumberFormat
300
What type of loop do you use when you know how many times you would like to iterate?
For loop
300
What do we call a behavior that can be performed on an object?
A method
300
boolean[][] answers = new boolean[10][2];
What is the index of the element in the last row and last column of the answers array?
answers[9][1]
300
What is another word for a "child" class?
A subclass
300
What are the three legal characters you can start a variable with?
letter
$ (dollar sign)
_ (underscore)
400
How many iterations?
7
400
When you declare an instance variable as private, ____ has access to the variable.
Only the class itself
400
A two dimensional array can have rows of different lengths?
True
400
Which of the following will be inherited by a subclass?
public instance variables
protected instance variables
private instance variables
public instance variables
protected instance variables
400
What is the purpose of selection sort?
Selection sort puts the elements of an array in order from least to greatest.
500
Predict the output
1 2 3 4
500
What type of variable belongs to the entire class and not each object?
A static variable
500
int[] num = {4, 5, 8, 2, 7};
What would this method call return?
indexOf(num, 1);
-1
500
The word _____ is used when calling the constructor of the parent class.
super
500
Put the following Strings in lexicographic order:
Banana
apple
123orange
banana
APPle
Apple
orange
123orange
APPle
Apple
Banana
apple
banana
orange