These are The Java Language Week 3 Coursera Answers
Q1. True or False: Java is the only language that supports inheritance.
True
False
Answer: True
Q2. Which Java keyword creates a class as a superclass?
is
implements
super
extends
Answer: extends
Q3. If class A extends class B, class A will have class B’s and . Select all that apply.
none of these
subclasses
methods
properties
Answer: methods, properties
These are The Java Language Week 3 Coursera Answers
Q4. True or False: If a class inherits from another class, it cannot have its own methods and properties.
True
False
Answer: False
Q5. A superclass inherits from __________ .
Nothing
the new class
the Java Object
a subclass
Answer: a subclass
Q6. True or False: if there is no extends keyword, a class still inherits from Java Object.
True
False
Answer: True
These are The Java Language Week 3 Coursera Answers
Q7. ________ allows a class to inherit from another class, while having its own unique properties and methods.
Inheritance
Polymorphism
Superclasses
Answer: Polymorphism
Q8. Which of the following describes Overloading Functions? Select all that apply.
Java runs the called functions with matching parameters at runtime
is supported by Java
Class can have more than 1 function with the same name IF the parameters are different
is implemented using the extends keyword
Answer: Java runs the called functions with matching parameters at runtime, is supported by Java, Class can have more than 1 function with the same name IF the parameters are different
Q9. Which class is at the top of the class hierarchy?
the superclass
the object class
the parent class
the subclass
Answer: the object class
Q10. True or False: An abstract class can only be subclassed.
True
False
Answer: True
These are The Java Language Week 3 Coursera Answers
