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.
outside entity
class
parse.Int()
real-world modeling

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

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3. 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
real-world modeling
object.method();
variable

4. Any ___________ that wants to access data in a class can do so by using a method of that class.
outside entity
main()
class
parse.Int()

5. A software bundle of variables and related methods.
main()
object
instance
throws IOException

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

7. Manipulate the data in data structures in various ways such as sorting.
new
algorithms
class
programmer's tools

8. Execution of the program starts here
main()
algorithms
parse.Int()
charAt()

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

10. An arrangement of data inside a computers memory or a disk.
objects methods
object.method();
data structure
linked lists

11. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
data structure
linked lists
charAt()
real-world storage data

12. Returns a character at the specific position in the string object.
new
main()
instance
charAt()

13. A field of method that is private can only be accessed by _________ that are apart of the same class.
variable
class
methods
class

14. The constructor has the same name as the ______ it resides in.
real-world storage data
outside entity
class
throws IOException

15. Other parts of your program interact with objects by interacting with an __________
objects methods
linked lists
parse.Int()
outside entity

16. Invoking a method for a specific object.
object.method();
throws IOException
class
new

17. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
class
real-world storage data
methods
charAt()

18. Must be added to all input methods for them to work
real-world storage data
throws IOException
variable
main()

19. This keyword creates a new object in Java.
new
throws IOException
parse.Int()
outside entity

20. An object is often referred to as _____ of a class.
class
real-world storage data
charAt()
instance

21. Data structures that directly model real-world situations...think graphs.
parse.Int()
object.method();
variable
real-world modeling