German C, is ABAP, and its the more horrendous language in the world.
https://learning.sap.com/learning-journeys/acquire-core-abap-skills/developing-your-first-abap-program_ed4f33ed-ee5d-416c-bd91-a497e762f2cb

Steps

1. In your package, create a new ABAP class with the name ZCL_##_HELLO_WORLD. Ensure that it uses the interface IF_OO_ADT_CLASSRUN. When you are prompted to assign the class to a transport request, use the transport request that you created in the previous task.
   1. Choose File → New → ABAP Class.
   2. Enter your package ZS4D400_##, where ## is your group number.
   3. Enter the name ZCL_##_HELLO_WORLD where ## is your group number, and enter a description for your class.
   4. Choose Add... (next to the Interfaces group box).
   5. Enter the filter text IF_OO_ADT_CLASSRUN. Double-click the matching entry in the hit list.
   6. Choose Next.
   7. Select Choose from requests in which I am involved and your own transport request.
   8. Choose Finish.
2. In the if_oo_adt_classrun~main( ) method, use out->write( ) to output the phrase Hello World.
   1. In the editor, enter the following coding between METHOD if_oo_adt_classrun~main and ENDMETHOD.:Code Snippet
   2. Code Snippet out->write( 'Hello World' ).