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. Execution of the program starts here
charAt()
main()
throws IOException
real-world modeling

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

3. Returns a character at the specific position in the string object.
variable
methods
linked lists
charAt()

4. Data structures that directly model real-world situations...think graphs.
methods
new
real-world modeling
data structure

5. Any ___________ that wants to access data in a class can do so by using a method of that class.
real-world storage data
new
constructor
outside entity

6. This keyword creates a new object in Java.
real-world storage data
new
real-world modeling
class

7. Invoking a method for a specific object.
object.method();
real-world storage data
programmer's tools
outside entity

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.
instance
linked lists
class
variable

9. Must be added to all input methods for them to work
linked lists
object.method();
throws IOException
objects methods

10. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
instance
linked lists
real-world modeling
charAt()

11. Converts the string type into an integer.
linked lists
parse.Int()
throws IOException
algorithms

12. Other parts of your program interact with objects by interacting with an __________
instance
object.method();
new
objects methods

13. A blueprint that defines an objects variables and methods.
charAt()
class
methods
data structure

14. An arrangement of data inside a computers memory or a disk.
constructor
data structure
object
charAt()

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

16. An object is often referred to as _____ of a class.
instance
variable
constructor
object.method();

17. A field of method that is private can only be accessed by _________ that are apart of the same class.
algorithms
methods
real-world modeling
constructor

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

19. Manipulate the data in data structures in various ways such as sorting.
object.method();
main()
algorithms
real-world modeling

20. A software bundle of variables and related methods.
main()
throws IOException
outside entity
object

21. The constructor has the same name as the ______ it resides in.
algorithms
variable
class
object.method();