[email] Suggestion to avoid NullPointerException

Dear Developers, We are a team of researchers from the Hong Kong University of Science and Technology (HKUST). Currently, we are studying how crowdsourcing can help developers to build a higher quality software. One of the subjects that we used is Apache Commons Email. From our experiment, we ide

[math] Suggestion to use List instead of Type array

Dear Developers, We are a team of researchers from the Hong Kong University of Science and Technology (HKUST). Currently, we are studying how crowdsourcing can help developers to build a higher quality software. One of the subjects that we used is Apache Commons Math. From our experiment, we iden