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. A software bundle of variables and related methods.
charAt()
instance
parse.Int()
object

2. Invoking a method for a specific object.
object
class
objects methods
object.method();

3. Data structures that directly model real-world situations...think graphs.
programmer's tools
variable
real-world modeling
methods

4. Converts the string type into an integer.
methods
charAt()
parse.Int()
instance

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

6. Must be added to all input methods for them to work
throws IOException
real-world storage data
data structure
variable

7. A field of method that is private can only be accessed by _________ that are apart of the same class.
variable
parse.Int()
methods
charAt()

8. Returns a character at the specific position in the string object.
parse.Int()
methods
charAt()
instance

9. 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
programmer's tools
parse.Int()
algorithms

10. Execution of the program starts here
main()
new
object
class

11. This keyword creates a new object in Java.
new
data structure
object.method();
programmer's tools

12. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
linked lists
variable
real-world storage data
parse.Int()

13. The constructor has the same name as the ______ it resides in.
objects methods
programmer's tools
constructor
class

14. Any ___________ that wants to access data in a class can do so by using a method of that class.
new
outside entity
constructor
parse.Int()

15. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
real-world modeling
real-world storage data
variable
object

16. Other parts of your program interact with objects by interacting with an __________
new
objects methods
linked lists
object

17. Manipulate the data in data structures in various ways such as sorting.
constructor
algorithms
class
instance

18. An arrangement of data inside a computers memory or a disk.
data structure
class
new
real-world storage data

19. A special method that is called automatically whenever a new object is created. It prepares the object for use.
outside entity
class
new
constructor

20. An object is often referred to as _____ of a class.
variable
instance
new
algorithms

21. A blueprint that defines an objects variables and methods.
class
real-world modeling
objects methods
instance