{"id":7154,"date":"2025-07-30T22:34:53","date_gmt":"2025-07-30T17:04:53","guid":{"rendered":"https:\/\/www.sapewmhelp.com\/?question=what-is-inheritance"},"modified":"2025-07-31T10:38:23","modified_gmt":"2025-07-31T05:08:23","slug":"what-is-inheritance","status":"publish","type":"question","link":"https:\/\/www.sapewmhelp.com\/?question=what-is-inheritance","title":{"rendered":"What is Inheritance ? Using Inheritance in SAP ABAP"},"content":{"rendered":"

Inheritance allows one class to reuse<\/strong> the code from another class. In SAP ABAP, this helps in building modular<\/strong>, reusable<\/strong>, and maintainable<\/strong> programs.<\/p>\n

Use of Inheritance in SAP<\/h3>\n
\n
\n\n\n\n\n\n\n\n\n\n
Purpose<\/strong><\/th>\nExplanation<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Code Reusability<\/td>\nYou don’t need to rewrite common logic; it can be inherited from a base class.<\/td>\n<\/tr>\n
Standardization<\/td>\nCommon functionality can be centralized in a superclass and reused.<\/td>\n<\/tr>\n
Simplifies Maintenance<\/td>\nChanges in the parent class reflect automatically in all child classes.<\/td>\n<\/tr>\n
Extensibility<\/td>\nChild classes can add or override methods to provide specific functionality.<\/td>\n<\/tr>\n
Polymorphism Support<\/td>\nYou can treat objects of different subclasses uniformly using references.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Types of Inheritance in SAP ABAP<\/h3>\n
    \n
  1. Single Inheritance<\/strong> \u2013 A subclass inherits from only one parent class.<\/li>\n
  2. No Multiple Inheritance<\/strong> \u2013 SAP ABAP does not support multiple inheritance, but it allows interfaces<\/strong> for similar functionality.<\/li>\n<\/ol>\n
    \n
    *&---------------------------------------------------------------------*<\/span>\n*&\u00a0Report\u00a0\u00a0ZREP_LCLCLASS<\/span>\n*&<\/span>\n*&---------------------------------------------------------------------*<\/span>\n*&<\/span>\n*&<\/span>\n*&---------------------------------------------------------------------*<\/span>\n\nREPORT\u00a0<\/span>zrep_lclclass.<\/span>\n\nCLASS\u00a0<\/span>parent_class\u00a0DEFINITION<\/span>.<\/span>\n\u00a0\u00a0PUBLIC\u00a0<\/span>SECTION<\/span>.<\/span>\n\u00a0\u00a0\u00a0\u00a0METHODS<\/span>:\u00a0<\/span>display.<\/span>\nENDCLASS<\/span>.<\/span>\n\nCLASS\u00a0<\/span>parent_class\u00a0IMPLEMENTATION<\/span>.<\/span>\n\u00a0\u00a0METHOD\u00a0<\/span>display.<\/span>\n\u00a0\u00a0\u00a0\u00a0WRITE<\/span>:\u00a0<\/span>'This\u00a0is\u00a0<\/span>parent\u00a0class'.<\/span>\n\u00a0\u00a0ENDMETHOD<\/span>.<\/span>\nENDCLASS<\/span>.<\/span>\n\nCLASS\u00a0<\/span>child_class\u00a0DEFINITION\u00a0<\/span>INHERITING\u00a0<\/span>FROM\u00a0<\/span>parent_class.<\/span>\n\u00a0\u00a0PUBLIC\u00a0<\/span>SECTION<\/span>.<\/span>\n\u00a0\u00a0\u00a0\u00a0METHODS<\/span>:\u00a0<\/span>show.<\/span>\nENDCLASS<\/span>.<\/span>\n\nCLASS\u00a0<\/span>child_class\u00a0IMPLEMENTATION<\/span>.<\/span>\n\u00a0\u00a0METHOD\u00a0<\/span>show.<\/span>\n\u00a0\u00a0\u00a0\u00a0WRITE<\/span>:\u00a0<\/span>'This\u00a0is\u00a0<\/span>child\u00a0class'.<\/span>\n\u00a0\u00a0ENDMETHOD<\/span>.<\/span>\nENDCLASS<\/span>.<\/span>\n\nSTART-OF-SELECTION<\/span>.<\/span>\n\u00a0\u00a0DATA\u00a0<\/span>obj\u00a0TYPE\u00a0<\/span>REF\u00a0<\/span>TO\u00a0<\/span>child_class.<\/span>\n\u00a0\u00a0CREATE\u00a0<\/span>OBJECT\u00a0obj.<\/span>\n\u00a0\u00a0obj-><\/span>display(\u00a0<\/span>)<\/span>.\u00a0\u00a0\u00a0<\/span>\"Inherited\u00a0method<\/span>\n\u00a0\u00a0skip\u00a0<\/span>2<\/span>.<\/span>\n\u00a0\u00a0obj-><\/span>show(\u00a0<\/span>)<\/span>.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>\"Own\u00a0method<\/span><\/span> <\/code><\/pre>\n<\/div>\n
    Output:
    \n<\/p>\n<\/div>\n<\/div>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","question-category":[174],"question_tags":[190,191,192,168,177],"class_list":["post-7154","question","type-question","status-publish","hentry","question-category-ooabap","question_tags-inheritence","question_tags-method-overriding","question_tags-object-oriented-programming","question_tags-ooabap","question_tags-sap"],"_links":{"self":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/question\/7154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/question"}],"about":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/types\/question"}],"author":[{"embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7154"}],"wp:attachment":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7154"}],"wp:term":[{"taxonomy":"question-category","embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fquestion-category&post=7154"},{"taxonomy":"question_tags","embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fquestion_tags&post=7154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}