Design principles and 23 design patterns of JAVA6

Java Six Design Patterns

1. Single responsibility Rule (SRP): There is only one reason for the change of class.

2. Dependency inversion rule (DIP):

1, the high-level module should not rely on the underlying module, both with the dependency interface;

2, the interface does not depend on the details;

　　　　3, the detail depends on the interface.

3. Interface isolation rules: dependencies between classes should be based on a minimum number of interfaces.

4, the Richter replacement rule: So the reference base class can be transparent to the use of sub-class objects.

5, Dimitri Law: Also called least know the principle. That is, an object should have a minimal understanding of other objects.

6, opening and closing rules: open to the expansion, the modification is closed.

Design principles and 23 design patterns of JAVA6