The Single Responsibility Principle (SRP) is a software development principle that states that a class or module should have only one reason to change. In other words, a class should have only one responsibility or job to do, and all of its methods and properties should be focused on that one responsibility. This makes the class easier to understand, modify, and maintain over time.

The Single Responsibility Principle (SRP) was popularized by Robert C. Martin, also known as “Uncle Bob”, in his book “Agile Software Development, Principles, Patterns, and Practices”.

he Single Responsibility Principle (SRP) is one of the five SOLID principles of object-oriented design, which are guidelines for writing clean, maintainable, and scalable code. The SOLID principles are:

1. Single Responsibility Principle (SRP)
2. Open-Closed Principle (OCP)
3. Liskov Substitution Principle (LSP)
4. Interface Segregation Principle (ISP)
5. Dependency Inversion Principle (DIP)

The SRP is the first principle and it emphasizes the importance of designing classes that have only one responsibility. The other SOLID principles build upon this foundation by defining guidelines for designing classes that are open for extension but closed for modification (OCP), substitutable for their base types (LSP), and that depend on abstractions rather than concretions (DIP). The ISP provides guidelines for designing interfaces that are specific to the needs of clients, and not too broad or too narrow. By following these principles, developers can create code that is easy to maintain, test, and extend over time.