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 special method that is called automatically whenever a new object is created. It prepares the object for use.
constructor
object
variable
objects methods

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

3. An object is often referred to as _____ of a class.
data structure
instance
main()
new

4. A field of method that is private can only be accessed by _________ that are apart of the same class.
constructor
class
methods
programmer's tools

5. An arrangement of data inside a computers memory or a disk.
methods
programmer's tools
data structure
object.method();

6. A blueprint that defines an objects variables and methods.
variable
constructor
class
linked lists

7. Execution of the program starts here
object
main()
real-world storage data
class

8. Invoking a method for a specific object.
class
object.method();
algorithms
real-world modeling

9. Data structures that directly model real-world situations...think graphs.
object
throws IOException
real-world modeling
objects methods

10. The constructor has the same name as the ______ it resides in.
object.method();
linked lists
real-world modeling
class

11. Manipulate the data in data structures in various ways such as sorting.
data structure
class
new
algorithms

12. 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.
data structure
variable
constructor
methods

13. Converts the string type into an integer.
parse.Int()
instance
outside entity
class

14. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
objects methods
outside entity
linked lists
new

15. Any ___________ that wants to access data in a class can do so by using a method of that class.
real-world storage data
outside entity
constructor
programmer's tools

16. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
objects methods
real-world storage data
programmer's tools
new

17. Must be added to all input methods for them to work
class
throws IOException
charAt()
data structure

18. Returns a character at the specific position in the string object.
data structure
charAt()
object.method();
class

19. This keyword creates a new object in Java.
new
class
constructor
object

20. A software bundle of variables and related methods.
object
linked lists
real-world storage data
throws IOException

21. Other parts of your program interact with objects by interacting with an __________
class
charAt()
objects methods
methods