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.
constructor
variable
class
main()

2. A software bundle of variables and related methods.
object
real-world modeling
charAt()
constructor

3. This keyword creates a new object in Java.
programmer's tools
new
methods
class

4. Execution of the program starts here
data structure
main()
methods
parse.Int()

5. Converts the string type into an integer.
throws IOException
instance
outside entity
parse.Int()

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

7. Returns a character at the specific position in the string object.
real-world modeling
linked lists
class
charAt()

8. Manipulate the data in data structures in various ways such as sorting.
object.method();
constructor
class
algorithms

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

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10. An arrangement of data inside a computers memory or a disk.
data structure
throws IOException
outside entity
main()

11. An object is often referred to as _____ of a class.
parse.Int()
variable
objects methods
instance

12. A special method that is called automatically whenever a new object is created. It prepares the object for use.
constructor
real-world storage data
class
objects methods

13. Must be added to all input methods for them to work
object.method();
throws IOException
methods
linked lists

14. Any ___________ that wants to access data in a class can do so by using a method of that class.
programmer's tools
outside entity
object.method();
real-world storage data

15. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
linked lists
charAt()
algorithms
variable

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.
outside entity
variable
main()
object

17. Invoking a method for a specific object.
object.method();
main()
real-world storage data
charAt()

18. Data structures that directly model real-world situations...think graphs.
data structure
variable
real-world modeling
programmer's tools

19. A field of method that is private can only be accessed by _________ that are apart of the same class.
object
methods
object.method();
real-world modeling

20. The constructor has the same name as the ______ it resides in.
objects methods
class
object
constructor

21. Other parts of your program interact with objects by interacting with an __________
constructor
class
programmer's tools
objects methods