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. Must be added to all input methods for them to work
parse.Int()
throws IOException
data structure
objects methods

2. 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
variable
class
methods

3. The constructor has the same name as the ______ it resides in.
object.method();
class
data structure
algorithms

4. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
outside entity
linked lists
class
variable

5. Data structures that directly model real-world situations...think graphs.
real-world modeling
constructor
outside entity
linked lists

6. Returns a character at the specific position in the string object.
parse.Int()
charAt()
outside entity
data structure

7. Other parts of your program interact with objects by interacting with an __________
throws IOException
class
object.method();
objects methods

8. Any ___________ that wants to access data in a class can do so by using a method of that class.
outside entity
programmer's tools
real-world modeling
throws IOException

9. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
objects methods
real-world storage data
object
throws IOException

10. A software bundle of variables and related methods.
class
outside entity
new
object

11. A field of method that is private can only be accessed by _________ that are apart of the same class.
real-world storage data
new
real-world modeling
methods

12. An arrangement of data inside a computers memory or a disk.
throws IOException
main()
real-world modeling
data structure

13. A blueprint that defines an objects variables and methods.
instance
class
throws IOException
linked lists

14. Execution of the program starts here
new
variable
data structure
main()

15. This keyword creates a new object in Java.
new
charAt()
class
linked lists

16. An object is often referred to as _____ of a class.
instance
class
constructor
variable

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

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

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19. Manipulate the data in data structures in various ways such as sorting.
methods
real-world modeling
algorithms
linked lists

20. Converts the string type into an integer.
charAt()
object
data structure
parse.Int()

21. A special method that is called automatically whenever a new object is created. It prepares the object for use.
objects methods
constructor
main()
class