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. Any ___________ that wants to access data in a class can do so by using a method of that class.
objects methods
data structure
outside entity
instance

2. A field of method that is private can only be accessed by _________ that are apart of the same class.
new
linked lists
methods
data structure

3. This keyword creates a new object in Java.
throws IOException
algorithms
new
programmer's tools

4. A software bundle of variables and related methods.
class
object.method();
object
algorithms

5. An arrangement of data inside a computers memory or a disk.
real-world storage data
parse.Int()
data structure
variable

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

7. Data structures that directly model real-world situations...think graphs.
outside entity
objects methods
linked lists
real-world modeling

8. The constructor has the same name as the ______ it resides in.
object
new
class
programmer's tools

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

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10. An object is often referred to as _____ of a class.
instance
charAt()
object
constructor

11. Manipulate the data in data structures in various ways such as sorting.
constructor
instance
algorithms
new

12. Execution of the program starts here
class
parse.Int()
data structure
main()

13. Converts the string type into an integer.
parse.Int()
charAt()
programmer's tools
real-world modeling

14. A special method that is called automatically whenever a new object is created. It prepares the object for use.
parse.Int()
constructor
object.method();
class

15. A blueprint that defines an objects variables and methods.
throws IOException
algorithms
class
real-world modeling

16. Returns a character at the specific position in the string object.
real-world storage data
objects methods
object.method();
charAt()

17. 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.
real-world storage data
variable
programmer's tools
throws IOException

18. Must be added to all input methods for them to work
throws IOException
charAt()
programmer's tools
linked lists

19. Other parts of your program interact with objects by interacting with an __________
constructor
objects methods
main()
methods

20. Invoking a method for a specific object.
outside entity
object.method();
constructor
real-world storage data

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