CLASS

Reference

Syntax Forms

Declaration part

CLASS class DEFINITION [INHERITING FROM superclass]
                       [ABSTRACT]
                       [FINAL]
                       [CREATE {PUBLIC|PROTECTED|PRIVATE}]
                       [SHARED MEMORY ENABLED]
                       [FOR TESTING]
                       [[GLOBAL] FRIENDS [class1 class2 ...]
                                         [intf1 intf2 ...] ].
  [PUBLIC SECTION.
    [components]]
  [PROTECTED SECTION.
    [components]]
  [PRIVATE SECTION.
    [components]]
ENDCLASS.

Implementation part

CLASS class IMPLEMENTATION.
  implementations
ENDCLASS.

Effect

Declaration and implementation of a class class. In the declaration part, the components components of a class are declared in the visibility sections PUBLIC, PROTECTED and PRIVATE SECTION, using ALIASES, [CLASS-]DATA, [CLASS-]METHODS and [CLASS-]EVENTS. In the implementation part, all the concrete methods declared in the declaration part between METHOD and ENDMETHOD are implemented.

Additions

• INHERITING FROM superclass
  Defines class as a subclass of superclass.
  
  
• ABSTRACT
  Defines class as an abstract class - that is, a class that cannot be instantiated.
  
  
• FINAL
  
  
• Defines class as a final class, from which you cannot derive subclasses.
  
  
• CREATE {PUBLIC|PROTECTED|PRIVATE}
  Specifies whether the class class can be instantiated as public, protected or private.
  
  
• SHARED MEMORY ENABLED
  Specifies that instances of the class can be stored in shared memory.
  
  
• FOR TESTING
  Defines a test class for ABAP Unit.
  
  
• [GLOBAL] FRIENDS [class1 class2 ...] [intf1 intf2 ...]
  Describes other classes class1 class2 ... or interfaces intf1 intf2 ... as friends, which are permitted to access protected and private components of class.