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. Converts the string type into an integer.
programmer's tools
main()
linked lists
parse.Int()

2. Data structures that directly model real-world situations...think graphs.
linked lists
real-world modeling
methods
programmer's tools

3. Any ___________ that wants to access data in a class can do so by using a method of that class.
charAt()
outside entity
constructor
methods

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

5. Execution of the program starts here
instance
data structure
algorithms
main()

6. This keyword creates a new object in Java.
objects methods
new
linked lists
class

7. Other parts of your program interact with objects by interacting with an __________
class
variable
parse.Int()
objects methods

8. A software bundle of variables and related methods.
object
throws IOException
constructor
outside entity

9. Must be added to all input methods for them to work
class
object
instance
throws IOException

10. A blueprint that defines an objects variables and methods.
real-world storage data
objects methods
real-world modeling
class

11. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
real-world storage data
constructor
linked lists
objects methods

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

13. Invoking a method for a specific object.
throws IOException
programmer's tools
object
object.method();

14. 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.
instance
linked lists
outside entity
variable

15. The constructor has the same name as the ______ it resides in.
variable
class
main()
parse.Int()

16. Returns a character at the specific position in the string object.
programmer's tools
objects methods
charAt()
real-world modeling

17. A special method that is called automatically whenever a new object is created. It prepares the object for use.
constructor
instance
programmer's tools
real-world storage data

18. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
real-world storage data
data structure
object.method();
instance

19. An object is often referred to as _____ of a class.
real-world modeling
objects methods
linked lists
instance

20. Manipulate the data in data structures in various ways such as sorting.
objects methods
data structure
throws IOException
algorithms

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