Does changing a private method violate the Open/Closed principle?

Changing a private method does not violate the Open/Closed Principle (OCP), as this principle states that "software entities should be open for extension but closed for modification."

Private methods are implementation details of a class, inaccessible from outside. Changing them does not affect the external interface and does not break client code.

However, if changing a private method requires modifying the public interface or behavior of the class, then it may violate the OCP.

In summary: changing a private method is an internal modification that does not contradict the Open/Closed principle.