Test your basic knowledge |

Data Structures And Algorithms Java

Subject : it-skills

Instructions:

Answer 21 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Data structure storage that is accessed by the program itself. Ex - stacks and queues.

2. Converts the string type into an integer.
algorithms
parse.Int()
real-world storage data
instance

3. Other parts of your program interact with objects by interacting with an __________
methods
parse.Int()
data structure
objects methods

4. An object is often referred to as _____ of a class.
linked lists
constructor
instance
data structure

5. A special method that is called automatically whenever a new object is created. It prepares the object for use.
charAt()
parse.Int()
objects methods
constructor

6. A software bundle of variables and related methods.
throws IOException
real-world storage data
object
methods

7. This keyword creates a new object in Java.
new
real-world storage data
objects methods
main()

8. Any ___________ that wants to access data in a class can do so by using a method of that class.
outside entity
data structure
methods
object

9. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
real-world storage data
new
outside entity
main()

10. The constructor has the same name as the ______ it resides in.
main()
linked lists
objects methods
class

11. Execution of the program starts here
main()
new
outside entity
real-world modeling

12. A field of method that is private can only be accessed by _________ that are apart of the same class.
methods
linked lists
real-world storage data
constructor

13. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
real-world modeling
instance
linked lists
data structure

14. Manipulate the data in data structures in various ways such as sorting.
data structure
new
algorithms
object.method();

15. Must be added to all input methods for them to work
instance
throws IOException
charAt()
data structure

16. To create an object in Java you must do two things: 1. Use the keyword "new" 2. Store a reference to the object in a ______ that is the same type as the class.
linked lists
charAt()
throws IOException
variable

17. Invoking a method for a specific object.
object.method();
methods
variable
objects methods

18. A blueprint that defines an objects variables and methods.
real-world modeling
class
linked lists
main()

19. Data structures that directly model real-world situations...think graphs.
real-world modeling
class
linked lists
algorithms

20. An arrangement of data inside a computers memory or a disk.
data structure
throws IOException
object
constructor

21. Returns a character at the specific position in the string object.
charAt()
algorithms
new
objects methods