intro to java course(please make it as easy as possible to understand) Any help greatly appreciated

1. Implement a method named surface that accepts 3 integer parameters named width, length, and depth. It will return the total surface area (6 sides) of the rectangular box it represents.

2. Implement a method named rightTriangle that accepts 2 double arameters named sideA and hypotenuseB. The method will return the length of the third side.

(This next part is a note that is a bit confusing to me)

To test, you should put all of these methods into a MyMethods class and then write an application that will instantiate an instance (object) of that class to use the above methods. It should be obvious that you will need to get the parameters from either the user or through some other means (random number generator) so that when you call (invoke) the method you have the actual parameters to pass along to the method being called. If you do generate numbers have the application print them out so that you know what was generated and given to the method so that the return values can be checked for correctness.