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 software bundle of variables and related methods.
programmer's tools
methods
charAt()
object

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

3. Data structures that directly model real-world situations...think graphs.
outside entity
real-world modeling
instance
variable

4. A special method that is called automatically whenever a new object is created. It prepares the object for use.
variable
linked lists
constructor
programmer's tools

5. An object is often referred to as _____ of a class.
outside entity
new
instance
object

6. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
linked lists
outside entity
class
programmer's tools

7. Must be added to all input methods for them to work
throws IOException
variable
object
programmer's tools

8. Any ___________ that wants to access data in a class can do so by using a method of that class.
linked lists
outside entity
object
charAt()

9. 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
data structure
programmer's tools
parse.Int()

10. Execution of the program starts here
object
data structure
main()
programmer's tools

11. Converts the string type into an integer.
real-world modeling
parse.Int()
object
objects methods

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

13. An arrangement of data inside a computers memory or a disk.
data structure
constructor
outside entity
parse.Int()

14. The constructor has the same name as the ______ it resides in.
class
charAt()
instance
main()

15. Other parts of your program interact with objects by interacting with an __________
objects methods
algorithms
real-world storage data
main()

16. A blueprint that defines an objects variables and methods.
real-world storage data
throws IOException
outside entity
class

17. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
programmer's tools
constructor
real-world storage data
new

18. Manipulate the data in data structures in various ways such as sorting.
real-world modeling
methods
new
algorithms

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

20. This keyword creates a new object in Java.
new
real-world modeling
parse.Int()
real-world storage data

21. Invoking a method for a specific object.
outside entity
methods
object.method();
class