$***$Java$***$ Polymorphism and Dynamic Binding: Create a class named Utilities

$**$ Each class file must be in its own file, separate from the main. $20$ Points.

The Utilities class will have a static method Combiner, that combines different types of inputs in different ways.

The examples below demonstrate functionality but aren't representative of every kind of input$/$output combination. The ones that include a boolean have "false" negate the other input.

Combiner$(3,"3")=9$

Combiner$("3",3)=9$

Combiner$("3","3")="3$ x $3=9"$

Combiner$(5,$ true$)=5$

Combiner$(5,$ false$)=-5$

Combiner$(-5,$ true$)=-5$

Combiner$("5",$ true$)="5"$

Combiner$("-5",$ false$)="5"$