Java design Pattern Six principles or seven principles.

1. Opening and closing principle (Open Close Principle)

2. The principle of substitution on the Richter scale (Liskov Substitution Principle)

3. Dependency reversal principle (dependence inversion Principle)

4. Interface Isolation principle (Interface segregation Principle)

5. Dimitri rule (Law of Demeter) and least known principle

6. Single Duty principle (Responsibility Principle)

7. Combination/Aggregation multiplexing principle

General principles of software programming: low-coupling, high cohesion

Java design Pattern Six principles or seven principles.