topic interface in Application Development and Automation Discussions

topic interface in Application Development and Automation Discussions https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643320#M608663 <HTML><HEAD></HEAD><BODY><P>Hi..</P><P>What is the difference b/w classes and interface</P></BODY></HTML> Fri, 17 Aug 2007 04:06:19 GMT Former Member 2007-08-17T04:06:19Z interface https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643320#M608663 <HTML><HEAD></HEAD><BODY><P>Hi..</P><P>What is the difference b/w classes and interface</P></BODY></HTML> Fri, 17 Aug 2007 04:06:19 GMT https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643320#M608663 Former Member 2007-08-17T04:06:19Z Re: interface https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643321#M608664 <HTML><HEAD></HEAD><BODY><P>Hii..</P><P></P><P>Class will have implementation. Interface will have definition only.</P><P>We can Instantiate a Class but not an Interface.</P><P>Interface will not have Visibility Sections(Public, Private, Protected)</P><P>All interface components are PUBLIC by default.</P><P></P><P></P><P><b>Reward if Helpful</b></P></BODY></HTML> Fri, 17 Aug 2007 04:10:22 GMT https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643321#M608664 varma_narayana 2007-08-17T04:10:22Z Re: interface https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643322#M608665 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P><b>Interfaces</b></P><P></P><P>Interfaces are independent structures that allow you to enhance the class-specific public points of contact by implementing them in classes. </P><P></P><P>->Interfaces can be defined globally in the R/3 repository or locally in ABAP program</P><P>->Can define exactly same components in Interfaces as in Classes</P><P>->Unlike classes, Interfaces do not have instances, instead they are implemented by classes</P><P>->Implemented using INTERFACES statement in the declaration part of the class</P><P>->INTERFACES statement must be included in the PUBLIC SECTION of the class</P><P>->Different classes that implement the same interface can all be addressed in the same way.</P><P>->Interfaces can also be nested.</P><P></P><P>Interfaces are the basis for polymorphism in classes, because they allow a single interface method to behave differently in different classes.</P><P></P><P></P><P>Here you can find all about OO ABAP,</P><P>includes about class also.</P><P></P><P>links for OO ABAP.</P><P></P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm</A></P><P><A href="http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt" target="test_blank">http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt</A></P><P></P><P><A href="http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf" target="test_blank">http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf</A></P><P><A href="http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt" target="test_blank">http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt</A></P><P><A href="http://www.allsaplinks.com/" target="test_blank">http://www.allsaplinks.com/</A></P><P><A href="http://www.sap-img.com/" target="test_blank">http://www.sap-img.com/</A></P><P><A href="http://www.sapgenie.com/" target="test_blank">http://www.sapgenie.com/</A></P><P><A href="http://help.sap.com" target="test_blank">http://help.sap.com</A></P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P><A href="http://www.sapgenie.com" target="test_blank">http://www.sapgenie.com</A>.</P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://www.sapgenie.com/abap/controls/index.htm" target="test_blank">http://www.sapgenie.com/abap/controls/index.htm</A></P><P><A href="http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf" target="test_blank">http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf</A></P><P><A href="http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf" target="test_blank">http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf</A></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm" target="test_blank">http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm</A></P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P></P><P></P><P>some more materials.</P><P></P><P>Go through the following Documents Links & Materials for ABAP Objects</P><P></P><P>check the below links lot of info and examples r there</P><P></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://www.geocities.com/victorav15/sapr3/abap_ood.html" target="test_blank">http://www.geocities.com/victorav15/sapr3/abap_ood.html</A></P><P><A href="http://www.brabandt.de/html/abap_oo.html" target="test_blank">http://www.brabandt.de/html/abap_oo.html</A></P><P></P><P>Check this cool weblog:</P><P>/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql</P><P>/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql</P><P>/people/sap.user72/blog/2005/05/10/a-small-tip-for-the-beginners-in-oo-abap</P><P>/people/ravikumar.allampallam/blog/2005/02/11/abap-oo-in-action</P><P>/people/thomas.jung3/blog/2005/09/08/oo-abap-dynpro-programming</P><P><A href="http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm" target="test_blank">http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm</A></P><P></P><P></P><P></P><P></P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm</A></P><P><A href="http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt" target="test_blank">http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt</A></P><P></P><P><A href="http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf" target="test_blank">http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf</A></P><P><A href="http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt" target="test_blank">http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt</A></P><P><A href="http://www.allsaplinks.com/" target="test_blank">http://www.allsaplinks.com/</A></P><P><A href="http://www.sap-img.com/" target="test_blank">http://www.sap-img.com/</A></P><P><A href="http://www.sapgenie.com/" target="test_blank">http://www.sapgenie.com/</A></P><P><A href="http://help.sap.com" target="test_blank">http://help.sap.com</A></P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://www.sapgenie.com/abap/controls/index.htm" target="test_blank">http://www.sapgenie.com/abap/controls/index.htm</A></P><P><A href="http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf" target="test_blank">http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf</A></P><P><A href="http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf" target="test_blank">http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf</A></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm" target="test_blank">http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm</A></P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P></P><P></P><P>these links </P><P><A href="http://help.sap.com/saphelp_47x200/helpdata/en/ce/b518b6513611d194a50000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_47x200/helpdata/en/ce/b518b6513611d194a50000e8353423/content.htm</A></P><P></P><P>For funtion module to class</P><P><A href="http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5954f411d194a60000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5954f411d194a60000e8353423/content.htm</A></P><P></P><P>for classes</P><P><A href="http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5c54f411d194a60000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b5c54f411d194a60000e8353423/content.htm</A></P><P></P><P>for methods</P><P><A href="http://help.sap.com/saphelp_47x200/helpdata/en/08/d27c03b81011d194f60000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_47x200/helpdata/en/08/d27c03b81011d194f60000e8353423/content.htm</A></P><P></P><P>for inheritance</P><P><A href="http://help.sap.com/saphelp_47x200/helpdata/en/dd/4049c40f4611d3b9380000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_47x200/helpdata/en/dd/4049c40f4611d3b9380000e8353423/content.htm</A></P><P></P><P>for interfaces</P><P><A href="http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b6254f411d194a60000e8353423/content.htm" target="test_blank">http://help.sap.com/saphelp_47x200/helpdata/en/c3/225b6254f411d194a60000e8353423/content.htm</A></P><P></P><P></P><P></P><P>check the below links lot of info and examples r there</P><P></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://www.geocities.com/victorav15/sapr3/abap_ood.html" target="test_blank">http://www.geocities.com/victorav15/sapr3/abap_ood.html</A></P><P><A href="http://www.brabandt.de/html/abap_oo.html" target="test_blank">http://www.brabandt.de/html/abap_oo.html</A></P><P></P><P>Check this cool weblog:</P><P>/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql</P><P>/people/thomas.jung3/blog/2004/12/08/abap-persistent-classes-coding-without-sql</P><P><A href="http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm" target="test_blank">http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b6254f411d194a60000e8353423/frameset.htm</A></P><P></P><P>Regards,</P><P>Priyanka.</P></BODY></HTML> Fri, 17 Aug 2007 04:12:29 GMT https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643322#M608665 Former Member 2007-08-17T04:12:29Z Re: interface https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643323#M608666 <HTML><HEAD></HEAD><BODY><P>The essential difference between interfaces and classes is that there is no implementation part for an interface. Therefore, it is not necessary to add DEFINITION to INTERFACE. The methods of an interface are all abstract. They are fully declared, including their parameter interface, but not implemented in the interface. Like the subclasses that implement the abstract methods of their abstract superclasses, all classes that want to use an interface must implement its methods.</P></BODY></HTML> Fri, 17 Aug 2007 04:20:24 GMT https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643323#M608666 Former Member 2007-08-17T04:20:24Z Re: interface https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643324#M608667 <HTML><HEAD></HEAD><BODY><P>Thanks to all</P></BODY></HTML> Fri, 17 Aug 2007 05:19:14 GMT https://community.sap.com/t5/application-development-and-automation-discussions/interface/m-p/2643324#M608667 Former Member 2007-08-17T05:19:14Z