Refer to the UML below to implement the data structure of a stack

Step $1$: Create a java interface, StackInterface, to define Stack ADT.

Step $2$: Create a java class, ArrayStack, to implement the interface.

Step $3$: Create a java class, TestStack, to test if your implementation works or not.

Paste your implementation below:

$(1)$ The code of StackInterface:

$(2)$ The code of ArrayStack:

Need help please, if you could incorporate the stack interface code, ArrayStack code, and TestStack based off the UML and send final output