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Java Questions

by | Nov 30, 2023 | questions

1. Write the proper class definition for a class called “checking” that would inherit from base class “account”

2. Another name for a base class is a:
subordinate class
parent class
child class
dependency class

3. Overriding a method is basically:
when a child class inherits from a parent class and both contain a method with the same name and the same number/type of arguments
when a parent class inherits from a child class and both contain a method with the same name and the same number/type of arguments.
when you use the same method more than once in any class.
when you use the same method more than once in any class and don’t specify the base class name.

4. When creating methods in a class, it is permissible to declare multiple methods all with the same name.
True
False

5. The this() method is optional and can always be written another way
True
False

6. An abstract class can be used only
as a child class.
as an inherited class.
as a base class to derive other classes.
as an intermediate class used to define the layout of the base class.

7. If you override method from a parent class by creating a method in a derived class, it is possible to call the overridden method from the parent class by:
can’t be done. Once overridden, can’t be referenced again.
by using super() while specifying the correct arguments.
by using this() while specifying the correct arguments.
by using either super() or this() while specifying the correct arguments.

8. Which method could be used to check the first character if a string named stringName
charAt(0)
stringName.charAt(0)
charAt(1)
stringName.charAt(1)

9. The process of hiding all the details of a class definition that are not necessary to understand how objects of the class are used is called:
Overloading
Inheriting
Encapsulation
Iteration

10. Private methods are not inherited.
True
False

11. If you want to create a method and make it so it cannot be overridden, you would use the ______ keyword
static
public
private
final

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