Final answer:
The UML diagram entry '+ setHeight(h : double) : void' represents a public method used to set a property's value, specifically height, in a class. It takes a double as a parameter and does not return a value.
Step-by-step explanation:
A UML method is the implementation of an operation; if constraints are defined, the method must satisfy them.
A method may be illustrated several ways, including: in interaction diagrams, by the details and sequence of messages. in class diagrams, with a UML note symbol stereotyped with «method».
The UML (Unified Modeling Language) diagram entry + setHeight(h : double) : void represents a public method of a class in object-oriented programming.
The + symbol indicates that the method is public, meaning it can be accessed by any other class.
The method's name is setHeight, which suggests that it's used to set the value of a property, likely the height of an object.
The parameter 'h' of type double indicates that when calling this method, a double precision floating-point number should be passed as an argument. Finally, the : void part shows that this method does not return any value when it's called.