Create an interface RoleDisplayable to require a void method displayNameAndRole$()$

a$.$ Code a default method for displayNameAndRole$()$ that makes all Student instances display

the name with $,$ Student$$ after the name.

b$.$ Important: if it$$s not a Student, let$$s make the default method do nothing. $[$Maybe not

great design, but it will make this lab more interesting!$]$ How will you do this??

c$.$ Also important: if you try to invoke getName$()$ from your default method, you$$ll get a

compile error! $[$Remember static and dynamic types? getName$()$ is in the dynamic type

Student!$]$ To solve this problem, we$$ll need to add a cast before the

dot and method call something like this: $(($Student$)$ this$)$

$.$

$2.$ Make class Student implement RoleDisplayable.

$3.$ Write a test driver $($in main$())$ that

a$.$ builds an ArrayList of objects, populated with some Student objects. $[$do

it fast: copy and paste and edit $-10$ lines of code that add$()...]$

$4.$ Iterate through the list using a for$-$each loop in $,$ invoking the $[$default$]$

displayNameAndRole$()$

$5.$ Now, make Instructor class implement RoleDisplayable.

a$.$ In Instructor, override the displayNameAndRole$()$ method so an Instructor object has the

correct title displayed