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. Converts the string type into an integer.
objects methods
parse.Int()
algorithms
throws IOException

2. Execution of the program starts here
objects methods
outside entity
main()
real-world storage data

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

4. Must be added to all input methods for them to work
data structure
object.method();
throws IOException
algorithms

5. Data structures that directly model real-world situations...think graphs.
methods
real-world modeling
variable
class

6. A software bundle of variables and related methods.
main()
object
linked lists
programmer's tools

7. 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.
outside entity
main()
variable
programmer's tools

8. Returns a character at the specific position in the string object.
class
algorithms
methods
charAt()

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

10. Manipulate the data in data structures in various ways such as sorting.
outside entity
parse.Int()
algorithms
real-world storage data

11. An arrangement of data inside a computers memory or a disk.
object
real-world storage data
charAt()
data structure

12. This keyword creates a new object in Java.
algorithms
constructor
real-world modeling
new

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

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

15. A blueprint that defines an objects variables and methods.
linked lists
charAt()
algorithms
class

16. An object is often referred to as _____ of a class.
linked lists
variable
instance
real-world storage data

17. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
object.method();
linked lists
real-world storage data
class

18. The constructor has the same name as the ______ it resides in.
class
main()
object
parse.Int()

19. Invoking a method for a specific object.
parse.Int()
class
programmer's tools
object.method();

20. A special method that is called automatically whenever a new object is created. It prepares the object for use.
main()
constructor
real-world storage data
data structure

21. Other parts of your program interact with objects by interacting with an __________
variable
outside entity
new
objects methods