Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Java Final

Java I - Final Exam

QuestionAnswer
what is an interface in Java a collection of constants and methods
can an interface ever contain method bodies no
when a class implements an interface, what must it do it must declare and provide a method of body for each method in the interface
(True/False) a child class can extend just on parent and can implement zero or more interfaces true
Is the following a correct way to start out an interface class definition: public class SomeClass implements MyInterface Yes --SomeClass is automatically a child of the class Object
Look at the following interface: interface Taxable {double taxRate = 0.06 ; double calculateTax();} is the interface correct? Yes -- taxRate will automatically be a constant since it is in an interface
Can an Interface name be used as the type of a variable, like this: public static void main (String [] args) {SomeInterface x: ...} Yes--the variable can refer to any object who's class implements the interface
Is it OK if a class definition implements two different interfaces, each of which has the same definition for the constant PI? No--=if a class implements several interfaces, each constant must be defined in only one interface
Can an intefrace be given the private access modifier No--then the interface would never be used
Can an interface extend another interface Yes
Created by: kandriot