Understanding Mutator Methods in Java

What analogy is used to explain changing an object's attribute?

• Changing a car's color

• Changing a cell phone case

• Changing a computer's wallpaper

• Changing a book's cover

What is the primary purpose of a mutator method?

• To delete an instance variable

• To change the value of an instance variable

• To create a new object

• To print information to the console

What keyword begins the method signature of a mutator method?

• public

• private

• void

• protected

What is the return type of the 'setCaseColor' mutator method?

• boolean

• int

• String

• void

What naming convention is used for mutator methods?

• variableNameSet

• changeVariableName

• setVariableName

• getVariableName

What data type must the parameter of the 'setCaseColor' method match?

• int

• String

• boolean

• char

How do you change the 'caseColor' of a 'CellPhone' object to 'green'?

• myCellPhone.setCaseColor('green')

• setCaseColor('green')

• CellPhone.setCaseColor('green')

• myCellPhone.changeColor('green')

Can the 'caseColor' of a 'CellPhone' object be changed multiple times?

• Yes, as many times as desired

• No, only once when it is created

• No, it cannot be changed

• Yes, but only twice

Why are mutator methods important for object attributes?

• They are not important

• They allow for the creation of new objects

• They enable changing attributes without creating new objects

• They prevent any changes to the object

State 2 concepts that you reviewed or learned during this video.