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. The constructor has the same name as the ______ it resides in.
constructor
instance
class
algorithms

2. Invoking a method for a specific object.
object.method();
new
objects methods
object

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

4. Any ___________ that wants to access data in a class can do so by using a method of that class.
object
outside entity
object.method();
throws IOException

5. Data structures that directly model real-world situations...think graphs.
methods
real-world modeling
variable
charAt()

6. Other parts of your program interact with objects by interacting with an __________
data structure
outside entity
objects methods
real-world modeling

7. An object is often referred to as _____ of a class.
outside entity
real-world storage data
instance
objects methods

8. Execution of the program starts here
main()
class
real-world modeling
methods

9. A field of method that is private can only be accessed by _________ that are apart of the same class.
new
objects methods
main()
methods

10. A blueprint that defines an objects variables and methods.
class
object
instance
linked lists

11. Manipulate the data in data structures in various ways such as sorting.
algorithms
linked lists
throws IOException
parse.Int()

12. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
algorithms
outside entity
charAt()
real-world storage data

13. This keyword creates a new object in Java.
objects methods
throws IOException
programmer's tools
new

14. A special method that is called automatically whenever a new object is created. It prepares the object for use.
constructor
new
linked lists
throws IOException

15. A software bundle of variables and related methods.
methods
variable
object
instance

16. Must be added to all input methods for them to work
objects methods
constructor
throws IOException
outside entity

17. An arrangement of data inside a computers memory or a disk.
instance
data structure
class
main()

18. 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.
variable
object.method();
main()
parse.Int()

19. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
data structure
programmer's tools
object.method();
linked lists

20. Returns a character at the specific position in the string object.
charAt()
methods
parse.Int()
instance

21. Converts the string type into an integer.
instance
object.method();
class
parse.Int()