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. Any ___________ that wants to access data in a class can do so by using a method of that class.
outside entity
throws IOException
constructor
objects methods

2. A software bundle of variables and related methods.
parse.Int()
data structure
object
new

3. The constructor has the same name as the ______ it resides in.
outside entity
objects methods
charAt()
class

4. Other parts of your program interact with objects by interacting with an __________
object
instance
methods
objects methods

5. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
algorithms
class
linked lists
variable

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

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

8. Execution of the program starts here
charAt()
real-world storage data
outside entity
main()

9. Must be added to all input methods for them to work
throws IOException
outside entity
variable
new

10. Data structures that directly model real-world situations...think graphs.
real-world modeling
objects methods
data structure
object.method();

11. An object is often referred to as _____ of a class.
linked lists
throws IOException
real-world storage data
instance

12. 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.
object
constructor
data structure
variable

13. This keyword creates a new object in Java.
new
real-world modeling
instance
charAt()

14. A blueprint that defines an objects variables and methods.
outside entity
main()
class
instance

15. Manipulate the data in data structures in various ways such as sorting.
linked lists
algorithms
instance
real-world modeling

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

17. Invoking a method for a specific object.
object.method();
algorithms
new
class

18. An arrangement of data inside a computers memory or a disk.
data structure
methods
constructor
real-world storage data

19. Converts the string type into an integer.
linked lists
parse.Int()
throws IOException
methods

20. Returns a character at the specific position in the string object.
new
instance
charAt()
real-world storage data

21. A special method that is called automatically whenever a new object is created. It prepares the object for use.
object.method();
constructor
objects methods
class