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 blueprint that defines an objects variables and methods.
programmer's tools
new
class
instance

2. Other parts of your program interact with objects by interacting with an __________
objects methods
outside entity
throws IOException
parse.Int()

3. 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
algorithms
programmer's tools
variable

4. An arrangement of data inside a computers memory or a disk.
class
object.method();
data structure
real-world storage data

5. Returns a character at the specific position in the string object.
parse.Int()
new
charAt()
object

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

7. An object is often referred to as _____ of a class.
data structure
constructor
real-world modeling
instance

8. Any ___________ that wants to access data in a class can do so by using a method of that class.
real-world modeling
outside entity
new
charAt()

9. Must be added to all input methods for them to work
new
throws IOException
real-world modeling
algorithms

10. This keyword creates a new object in Java.
new
charAt()
instance
programmer's tools

11. Data structures that directly model real-world situations...think graphs.
linked lists
variable
constructor
real-world modeling

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

13. A field of method that is private can only be accessed by _________ that are apart of the same class.
parse.Int()
methods
charAt()
instance

14. The constructor has the same name as the ______ it resides in.
algorithms
parse.Int()
real-world storage data
class

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

16. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
class
linked lists
variable
parse.Int()

17. Invoking a method for a specific object.
outside entity
class
object.method();
main()

18. Converts the string type into an integer.
parse.Int()
methods
class
data structure

19. Execution of the program starts here
new
main()
programmer's tools
throws IOException

20. A software bundle of variables and related methods.
real-world modeling
constructor
object
class

21. Manipulate the data in data structures in various ways such as sorting.
real-world storage data
data structure
algorithms
instance