Robert L. Scot Drysdale Judith Hromcik Mark Allen Weiss Reg Hahne Java in the morning...Java in the evening...Java in 2004. 271-272 2003 conf/sigcse/2003 SIGCSE http://doi.acm.org/10.1145/611892.611909 db/conf/sigcse/sigcse2003.html#DrysdaleHWH03