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 blueprint that defines an objects variables and methods.
class
linked lists
main()
real-world storage data

2. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
outside entity
methods
variable
linked lists

3. Converts the string type into an integer.
class
methods
parse.Int()
constructor

4. A software bundle of variables and related methods.
main()
objects methods
instance
object

5. Manipulate the data in data structures in various ways such as sorting.
class
parse.Int()
constructor
algorithms

6. A special method that is called automatically whenever a new object is created. It prepares the object for use.
class
constructor
real-world modeling
data structure

7. The constructor has the same name as the ______ it resides in.
constructor
throws IOException
methods
class

8. Returns a character at the specific position in the string object.
charAt()
data structure
outside entity
methods

9. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
real-world storage data
programmer's tools
outside entity
instance

10. 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.
real-world storage data
class
real-world modeling
variable

11. Any ___________ that wants to access data in a class can do so by using a method of that class.
main()
objects methods
object
outside entity

12. Must be added to all input methods for them to work
algorithms
throws IOException
linked lists
objects methods

13. This keyword creates a new object in Java.
data structure
new
parse.Int()
algorithms

14. A field of method that is private can only be accessed by _________ that are apart of the same class.
methods
constructor
outside entity
charAt()

15. Execution of the program starts here
constructor
main()
methods
real-world modeling

16. An arrangement of data inside a computers memory or a disk.
object
variable
object.method();
data structure

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

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18. Invoking a method for a specific object.
object.method();
class
algorithms
constructor

19. Other parts of your program interact with objects by interacting with an __________
new
objects methods
real-world modeling
linked lists

20. An object is often referred to as _____ of a class.
main()
instance
class
charAt()

21. Data structures that directly model real-world situations...think graphs.
outside entity
class
charAt()
real-world modeling