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. A field of method that is private can only be accessed by _________ that are apart of the same class.
parse.Int()
objects methods
methods
variable

2. Invoking a method for a specific object.
charAt()
class
object.method();
object

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

4. An arrangement of data inside a computers memory or a disk.
real-world modeling
objects methods
data structure
main()

5. A blueprint that defines an objects variables and methods.
class
instance
constructor
linked lists

6. Converts the string type into an integer.
outside entity
class
parse.Int()
object.method();

7. The constructor has the same name as the ______ it resides in.
programmer's tools
main()
class
object.method();

8. A software bundle of variables and related methods.
main()
variable
real-world storage data
object

9. A special method that is called automatically whenever a new object is created. It prepares the object for use.
instance
parse.Int()
constructor
main()

10. Manipulate the data in data structures in various ways such as sorting.
main()
instance
data structure
algorithms

11. Must be added to all input methods for them to work
class
methods
real-world storage data
throws IOException

12. Returns a character at the specific position in the string object.
real-world storage data
data structure
object.method();
charAt()

13. Any ___________ that wants to access data in a class can do so by using a method of that class.
instance
outside entity
linked lists
object

14. Data structures that directly model real-world situations...think graphs.
methods
real-world modeling
real-world storage data
variable

15. An object is often referred to as _____ of a class.
linked lists
instance
throws IOException
constructor

16. This keyword creates a new object in Java.
parse.Int()
main()
data structure
new

17. Execution of the program starts here
objects methods
object.method();
parse.Int()
main()

18. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
class
data structure
linked lists
real-world storage data

19. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
data structure
charAt()
linked lists
object

20. Other parts of your program interact with objects by interacting with an __________
new
linked lists
objects methods
throws IOException

21. 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.
class
methods
variable
real-world storage data