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. Returns a character at the specific position in the string object.
outside entity
throws IOException
charAt()
data structure

2. Execution of the program starts here
parse.Int()
class
throws IOException
main()

3. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
new
class
charAt()
real-world storage data

4. Invoking a method for a specific object.
linked lists
instance
outside entity
object.method();

5. Any ___________ that wants to access data in a class can do so by using a method of that class.
methods
data structure
outside entity
object.method();

6. A field of method that is private can only be accessed by _________ that are apart of the same class.
methods
real-world modeling
parse.Int()
variable

7. A special method that is called automatically whenever a new object is created. It prepares the object for use.
outside entity
throws IOException
constructor
object.method();

8. A software bundle of variables and related methods.
programmer's tools
real-world modeling
object
main()

9. Other parts of your program interact with objects by interacting with an __________
charAt()
objects methods
variable
real-world storage data

10. Converts the string type into an integer.
object.method();
class
main()
parse.Int()

11. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
main()
linked lists
object
charAt()

12. An arrangement of data inside a computers memory or a disk.
throws IOException
methods
objects methods
data structure

13. The constructor has the same name as the ______ it resides in.
throws IOException
class
objects methods
main()

14. A blueprint that defines an objects variables and methods.
class
instance
charAt()
outside entity

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

16. Data structures that directly model real-world situations...think graphs.
object
real-world modeling
variable
object.method();

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

18. An object is often referred to as _____ of a class.
variable
constructor
throws IOException
instance

19. Manipulate the data in data structures in various ways such as sorting.
algorithms
class
methods
throws IOException

20. Must be added to all input methods for them to work
constructor
class
linked lists
throws IOException

21. 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.
variable
outside entity
object.method();
class