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. An object is often referred to as _____ of a class.
instance
methods
linked lists
object

2. Returns a character at the specific position in the string object.
charAt()
object
class
objects methods

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

4. A field of method that is private can only be accessed by _________ that are apart of the same class.
methods
instance
charAt()
real-world storage data

5. Manipulate the data in data structures in various ways such as sorting.
methods
algorithms
real-world storage data
charAt()

6. Execution of the program starts here
linked lists
real-world storage data
main()
constructor

7. Invoking a method for a specific object.
variable
data structure
object.method();
instance

8. This keyword creates a new object in Java.
object
instance
class
new

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

10. An arrangement of data inside a computers memory or a disk.
real-world storage data
objects methods
data structure
object

11. The constructor has the same name as the ______ it resides in.
class
instance
constructor
real-world modeling

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.method();
throws IOException
variable
new

13. A blueprint that defines an objects variables and methods.
parse.Int()
class
constructor
instance

14. Any ___________ that wants to access data in a class can do so by using a method of that class.
object
class
outside entity
methods

15. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
linked lists
object
outside entity
programmer's tools

16. Other parts of your program interact with objects by interacting with an __________
real-world storage data
objects methods
class
parse.Int()

17. Must be added to all input methods for them to work
real-world storage data
constructor
throws IOException
object.method();

18. A software bundle of variables and related methods.
object
variable
algorithms
methods

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

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20. Data structures that directly model real-world situations...think graphs.
class
new
real-world modeling
methods

21. Converts the string type into an integer.
object.method();
parse.Int()
data structure
throws IOException