Q$9.$ Consider the Java interface defined below. According to this definition, if a class declares that it is Printable, then it must implement a print$()$ method. public interface Printable $\{$ void print$()$; $\}$ Write two simple classes Test$1$ and Test$2$ which implement the Printable interface. Q$10.$ Using your Test$1$ and Test$2$ classes of Q$9,$ implement a method in a new test class, void printAll$($Printable printables$[])$ which takes an array of Printable references and calls print$()$ on e XM$06$ ach reference in the array. The array passed in to printAll should be composed of a mixture of Test$1$ and Test$2$ objects.