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.
constructor
instance
parse.Int()
real-world storage data

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.
objects methods
class
real-world modeling
instance

4. The constructor has the same name as the ______ it resides in.
class
charAt()
algorithms
objects methods

5. Any ___________ that wants to access data in a class can do so by using a method of that class.
charAt()
outside entity
instance
real-world modeling

6. A blueprint that defines an objects variables and methods.
data structure
outside entity
objects methods
class

7. 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.
class
variable
new
instance

8. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
linked lists
real-world storage data
instance
methods

9. Data structures that directly model real-world situations...think graphs.
class
real-world modeling
algorithms
charAt()

10. A software bundle of variables and related methods.
throws IOException
algorithms
object
programmer's tools

11. Execution of the program starts here
algorithms
data structure
class
main()

12. This keyword creates a new object in Java.
algorithms
throws IOException
new
real-world modeling

13. Returns a character at the specific position in the string object.
object.method();
object
charAt()
variable

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

15. Must be added to all input methods for them to work
programmer's tools
throws IOException
instance
parse.Int()

16. A special method that is called automatically whenever a new object is created. It prepares the object for use.
class
real-world storage data
constructor
variable

17. Other parts of your program interact with objects by interacting with an __________
throws IOException
real-world modeling
data structure
objects methods

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

19. Invoking a method for a specific object.
programmer's tools
charAt()
object.method();
object

20. Manipulate the data in data structures in various ways such as sorting.
class
linked lists
variable
algorithms

21. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
algorithms
class
linked lists
constructor