Bob Martin's principles

Bob Martin's Principles of OOD

Martin does not claim to have invented the ideas he writes about, but he is among their foremost articulators.

Martin's articles can be found in the resources section of Object Mentor.

Principles of class design

• (SRP) The Single responsibility principle
• (OCP) The Open closed principle
• (LSP) The Liskov substitution principle
• (ISP) The Interface segregation principle
• (DIP) The Dependency inversion principle

The five principles above are known as SOLID (from their first letters).

Principles of package cohesion

• (REP) The Reuse release equivalence principle
• (CCP) The Common closure principle
• (CRP) The Common reuse principle

Principles of package coupling

• (ADP) The Acyclic dependencies principle
• (SDP) The Stable dependencies principle
• (SAP) The Stable abstractions principle

See also

• Bob Martin
• A very nice presentation from Bob Martin on the SOLID principles:[Principles of Agile Designs]
• Principles Of Object Oriented Design for examples.