Agreed, another reason I guess is because people in Java community is deciplined developers (they have to be since day one) – aware of data structure, time comp

Agreed, another reason I guess is because people in Java community is deciplined developers (they have to be since day one) – aware of data structure, time complexity and some CS principles. Plus the open source community includes some Apache kind sub communities in which developers are really persistent and proud to commit to what they are building.