Module 01-11 Inheritance

Question 1

Using inheritance to organize your classes allows you to build a…

Answer 1

Class Hierarchy of your code

Question 2

True or False: A class can inherit from more than one parent

Answer 2

FALSE

Question 3

True or False: A class can have more than one child

Answer 3

TRUE

Question 4

In Java, all Objects (Reference Types) are subclasses of the class…

Answer 4

java.lang.Object (the only class in Java that doesn’t have a superclass)

Question 5

Even if no superclass is specified, all classes still implicitly extend from java.lang.Object and inherit a set of common methods, such as…

Answer 5

.toString()
.equals()
.hashCode()

Question 6

True or False: BigDecimals are immutable

Answer 6

True

Question 7

True or False: BigDecimals can use operators like + or *

Answer 7

False, they must use methods like add()

Question 8

True or False: BigDecimals don’t have the rounding problem of double and float

Answer 8

True