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.
throws IOException
objects methods
object
parse.Int()

2. An arrangement of data inside a computers memory or a disk.
outside entity
data structure
throws IOException
object.method();

3. Execution of the program starts here
throws IOException
main()
algorithms
data structure

4. Manipulate the data in data structures in various ways such as sorting.
outside entity
methods
algorithms
linked lists

5. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
linked lists
new
charAt()
outside entity

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

7. Returns a character at the specific position in the string object.
linked lists
objects methods
object.method();
charAt()

8. 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.
linked lists
charAt()
real-world storage data
variable

9. A blueprint that defines an objects variables and methods.
class
parse.Int()
constructor
new

10. A special method that is called automatically whenever a new object is created. It prepares the object for use.
throws IOException
class
linked lists
constructor

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

12. Invoking a method for a specific object.
object.method();
parse.Int()
object
objects methods

13. This keyword creates a new object in Java.
charAt()
parse.Int()
new
constructor

14. An object is often referred to as _____ of a class.
constructor
new
main()
instance

15. Data structures that directly model real-world situations...think graphs.
real-world storage data
main()
real-world modeling
algorithms

16. Any ___________ that wants to access data in a class can do so by using a method of that class.
outside entity
main()
programmer's tools
constructor

17. The constructor has the same name as the ______ it resides in.
class
outside entity
variable
real-world modeling

18. A field of method that is private can only be accessed by _________ that are apart of the same class.
object
class
variable
methods

19. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
new
constructor
algorithms
real-world storage data

20. A software bundle of variables and related methods.
real-world storage data
object
object.method();
data structure

21. Other parts of your program interact with objects by interacting with an __________
objects methods
programmer's tools
variable
real-world storage data