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. Any ___________ that wants to access data in a class can do so by using a method of that class.
new
object.method();
algorithms
outside entity

2. Must be added to all input methods for them to work
throws IOException
outside entity
new
objects methods

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

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4. The constructor has the same name as the ______ it resides in.
constructor
charAt()
outside entity
class

5. Other parts of your program interact with objects by interacting with an __________
programmer's tools
objects methods
linked lists
object.method();

6. Returns a character at the specific position in the string object.
object
charAt()
data structure
parse.Int()

7. Converts the string type into an integer.
parse.Int()
class
algorithms
charAt()

8. A special method that is called automatically whenever a new object is created. It prepares the object for use.
constructor
real-world storage data
parse.Int()
new

9. An object is often referred to as _____ of a class.
real-world modeling
linked lists
instance
algorithms

10. A software bundle of variables and related methods.
constructor
object
throws IOException
class

11. This keyword creates a new object in Java.
new
instance
real-world storage data
linked lists

12. Execution of the program starts here
real-world storage data
main()
throws IOException
data structure

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

14. 5 data types - BLASH: binary trees - _______ - arrays - stacks - hash tables
algorithms
programmer's tools
object
linked lists

15. Data structures that directly model real-world situations...think graphs.
methods
new
real-world modeling
objects methods

16. Invoking a method for a specific object.
methods
instance
object.method();
constructor

17. Manipulate the data in data structures in various ways such as sorting.
methods
charAt()
throws IOException
algorithms

18. 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.
real-world modeling
charAt()
programmer's tools
variable

19. Data structure storage that describes physical entities external to the computer. Accessed by a programs user.
real-world storage data
throws IOException
algorithms
objects methods

20. An arrangement of data inside a computers memory or a disk.
throws IOException
data structure
constructor
algorithms

21. A blueprint that defines an objects variables and methods.
class
real-world storage data
real-world modeling
data structure