what's the meaning of green circle with 'a' in front of prompting in this pic?

Question

when i used alt + '/' in eclipse ,i don't understand the symbol and the char a in front of method name . example : ·A add(String e) : boolean - Colletion ·D foreach(...) : void what the ·A or ·D mean?

Answer 1

It indicates that this is an abtract ("A") public method (green circle). The "D" indicates a default method.

You can see what all the Eclipse symbols mean here.