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. This keyword creates a new object in Java.
new
object
throws IOException
constructor

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.
variable
outside entity
class
objects methods

3. Execution of the program starts here
class
new
objects methods
main()

4. Other parts of your program interact with objects by interacting with an __________
instance
outside entity
class
objects methods

5. A field of method that is private can only be accessed by _________ that are apart of the same class.
object.method();
objects methods
methods
variable

6. Converts the string type into an integer.
objects methods
parse.Int()
new
instance

7. A special method that is called automatically whenever a new object is created. It prepares the object for use.
object.method();
linked lists
constructor
main()

8. Invoking a method for a specific object.
data structure
object.method();
charAt()
objects methods

9. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
parse.Int()
real-world storage data
linked lists
outside entity

10. A blueprint that defines an objects variables and methods.
real-world storage data
class
charAt()
data structure

11. Data structures that directly model real-world situations...think graphs.
object
real-world modeling
linked lists
programmer's tools

12. Manipulate the data in data structures in various ways such as sorting.
outside entity
algorithms
charAt()
linked lists

13. The constructor has the same name as the ______ it resides in.
outside entity
class
real-world storage data
real-world modeling

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

15. An object is often referred to as _____ of a class.
objects methods
programmer's tools
methods
instance

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

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

18. Returns a character at the specific position in the string object.
real-world modeling
constructor
data structure
charAt()

19. A software bundle of variables and related methods.
object
outside entity
object.method();
programmer's tools

20. An arrangement of data inside a computers memory or a disk.
data structure
object.method();
object
main()

21. Must be added to all input methods for them to work
class
variable
instance
throws IOException