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. Manipulate the data in data structures in various ways such as sorting.
new
parse.Int()
objects methods
algorithms

2. An object is often referred to as _____ of a class.
data structure
algorithms
instance
methods

3. Converts the string type into an integer.
real-world modeling
class
parse.Int()
object

4. An arrangement of data inside a computers memory or a disk.
constructor
real-world modeling
data structure
programmer's tools

5. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
constructor
real-world storage data
methods
class

6. 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.
algorithms
outside entity
object
variable

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

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8. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
real-world modeling
new
throws IOException
linked lists

9. A blueprint that defines an objects variables and methods.
data structure
objects methods
linked lists
class

10. Must be added to all input methods for them to work
real-world modeling
throws IOException
charAt()
real-world storage data

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

12. A software bundle of variables and related methods.
object
algorithms
constructor
class

13. The constructor has the same name as the ______ it resides in.
throws IOException
main()
class
object.method();

14. Invoking a method for a specific object.
charAt()
object.method();
throws IOException
new

15. Execution of the program starts here
real-world storage data
class
main()
objects methods

16. This keyword creates a new object in Java.
objects methods
real-world storage data
constructor
new

17. Data structures that directly model real-world situations...think graphs.
charAt()
programmer's tools
real-world modeling
methods

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

19. A special method that is called automatically whenever a new object is created. It prepares the object for use.
objects methods
methods
constructor
data structure

20. Any ___________ that wants to access data in a class can do so by using a method of that class.
methods
programmer's tools
outside entity
object.method();

21. Returns a character at the specific position in the string object.
constructor
instance
charAt()
algorithms