How To Fix ABAP_TESTDOUBLE038 - &4 Double cannot be created if all methods are either FINAL or STATIC

SAP Error Message - Details

• Message type: E = Error

• Message class: ABAP_TESTDOUBLE -

• Message number: 038

• Message text: &4 Double cannot be created if all methods are either FINAL or STATIC

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ABAP_TESTDOUBLE038 - &4 Double cannot be created if all methods are either FINAL or STATIC ?

  The SAP error message ABAP_TESTDOUBLE038 indicates that a double cannot be created because all methods in the class are either FINAL or STATIC. This error typically arises in the context of ABAP Object-Oriented programming when you are trying to instantiate a class that does not allow for instantiation due to its method definitions.
  Cause:
  
  
  FINAL Methods: If all methods in a class are declared as FINAL, it means that they cannot be overridden in subclasses. This can prevent the creation of instances of the class if there are no non-final methods available for instantiation.
  
  
  STATIC Methods: If all methods are declared as STATIC, it means that they belong to the class itself rather than to any instance of the class. This also prevents the creation of instances since there are no instance methods available.
  
  
  Solution:
  To resolve this error, you need to ensure that the class has at least one non-static and non-final method that can be called on an instance of the class. Here are some steps you can take:
  
  
  Modify the Class Definition:
  
  Add at least one instance method that is neither FINAL nor STATIC. This allows for the creation of instances of the class.
  
  Example:
  CLASS my_class DEFINITION.
    PUBLIC SECTION.
      METHODS: my_instance_method.
    PROTECTED SECTION.
    PRIVATE SECTION.
  ENDCLASS.
  
  CLASS my_class IMPLEMENTATION.
    METHOD my_instance_method.
      " Implementation code here
    ENDMETHOD.
  ENDCLASS.
  
  
  Check Inheritance:
  
  If the class is intended to be a base class, ensure that it has methods that can be overridden in subclasses. This may involve removing the FINAL keyword from some methods.
  
  
  
  Review Class Design:
  
  Consider whether the class should be designed to be instantiated. If it is meant to be a utility class, it may be more appropriate to keep it as a static class without instance methods.
  
  
  
  Related Information:
  
  ABAP Object-Oriented Programming: Understanding the principles of OOP in ABAP, including the use of FINAL, STATIC, and instance methods, is crucial for effective class design.
  Class Instantiation: Familiarize yourself with how classes are instantiated in ABAP and the implications of method visibility and type.
  SAP Documentation: Refer to the official SAP documentation for more details on class definitions, method declarations, and object-oriented programming practices in ABAP.
  
  By ensuring that your class has the appropriate method definitions, you can avoid the ABAP_TESTDOUBLE038 error and successfully create instances of your class.