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.
new
real-world storage data
algorithms
parse.Int()

2. Must be added to all input methods for them to work
charAt()
throws IOException
new
programmer's tools

3. Execution of the program starts here
main()
real-world storage data
charAt()
outside entity

4. A blueprint that defines an objects variables and methods.
class
instance
charAt()
outside entity

5. A special method that is called automatically whenever a new object is created. It prepares the object for use.
constructor
programmer's tools
real-world modeling
real-world storage data

6. An arrangement of data inside a computers memory or a disk.
new
data structure
instance
variable

7. Returns a character at the specific position in the string object.
parse.Int()
real-world storage data
charAt()
programmer's tools

8. This keyword creates a new object in Java.
class
new
constructor
programmer's tools

9. An object is often referred to as _____ of a class.
instance
new
variable
methods

10. Other parts of your program interact with objects by interacting with an __________
new
objects methods
class
class

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

12. Manipulate the data in data structures in various ways such as sorting.
object.method();
new
main()
algorithms

13. The constructor has the same name as the ______ it resides in.
main()
class
data structure
parse.Int()

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

15. Data structures that directly model real-world situations...think graphs.
instance
real-world modeling
object.method();
class

16. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
linked lists
objects methods
object
class

17. A software bundle of variables and related methods.
real-world modeling
object
programmer's tools
data structure

18. Invoking a method for a specific object.
outside entity
data structure
linked lists
object.method();

19. 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
data structure
real-world modeling
class

20. A field of method that is private can only be accessed by _________ that are apart of the same class.
throws IOException
new
class
methods

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