Rule Definition
Utility classes are not meant to be instantiated because all the functionalities that they provide are accessible without instantiating the class. Instantiating these classes means that the developer has misused the class. It also consumes memory unnecessarily. Instead, providing a private default constructor ensures that the class is not instantiated.

Remediation
Add a private default constructor to ensure that the class cannot be instantiated.

Violation Code Sample

public class MyClassUtility
{
      static public bool MyUtilityFunction() {
            // Do Something Usefull 
            return true;
      }

      static int UtilityCount;
}  // VIOLATION

Fixed Code Sample

public class MyClassUtility
{
      static public bool MyUtilityFunction() {
            // Do Something Usefull 
            return true;
      }

      private MyUtilityClass() {  // FIXED
            // Avoid instantiation of the class
      }
      static int UtilityCount;
}

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