Complete - interrupt : #0309
task : #0308 - StudentUnit, StuaUnit, TcaUnit, TaskUnit
test : #0309 - hashCode(), equals() for all POJOs
New - task : #0310
task : #0310 - upgrade all UnitTest case.
task : #0308 - StudentUnit, StuaUnit, TcaUnit, TaskUnit
test : #0309 - hashCode(), equals() for all POJOs