Convert the following UML diagram into Java code.

Note: The structure of the class can be compiled and tested without having bodies for the methods. Just be sure to put in dummy return values for methods that have a return type other than void.

$\backslash$table$[[$Rectangle$],[-$ width : double$],[-$ length : double$],[\backslash$table$[[+$ setWidth$($w : double$)$ : void$],[+$ setLength len : double