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A ship class is a group of ships of a similar design. [1] This is distinct from a ship type, [1] which might reflect a similarity of tonnage or intended use. For example, USS Carl Vinson is a nuclear aircraft carrier (ship type) of the Nimitz class (ship class). In the course of building a class of ships, design changes might be implemented.
Ships in class: 6 (HDMS Diana, HDMS Freja, HDMS Havfruen, HDMS Najaden, HDMS Nymfen and HDMS Rota) Operator: Royal Danish Navy; Commissioned: 2007–2009; Status: In active service; Diciotti-class patrol boat. Builder: Italy; Displacement: 393 tons; Operators: Italian Coast Guard Maritime Squadron of the Armed Forces of Malta Iraqi Navy
In software engineering, a class diagram [1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.
A ship class can take the name of a class member or it can take a name that is thematically common to all members of the class. When the class takes its name from a member of the class, the name is italicized: Benjamin Franklin-class submarine; Thematically common class names are rendered in normal font:
The objects interact with each other indirectly through a mediator object that controls and coordinates the interaction. This makes the objects loosely coupled. They only refer to and know about their mediator object and have no explicit knowledge of each other. See also the UML class and sequence diagram below.
Class names should be nouns in UpperCamelCase, with the first letter of every word capitalised. Use whole words – avoid acronyms and abbreviations (unless the abbreviation is much more widely used than the long form, such as URL or HTML).
The part may only name the role, it may name an abstract superclass, or it may name a specific concrete class. The part can include a multiplicity factor, such as the [0..*] shown for Viewer in the diagram. Port : A port is an interaction point that can be used to connect structured classifiers with their parts and with the environment. Ports ...
A class diagram exemplifying the singleton pattern. In object-oriented programming, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance. It is one of the well-known "Gang of Four" design patterns, which describe how to solve recurring problems in object-oriented software. [1]