Improve ListTest sample test (#1389)
Improve ListTest sample test (#1389)

* Set private to fEmpty, fFull and remove unnecesary boxing on ListTest
* Change from protected to private fEmpty and fFull
* Remove unnecesary boxing on fFull.remove()
* Remove main method from ListTest, rename fEmpty to emptyList and rename fFull to fullList

junit-team/junit,mekwin87/junit4,stefanbirkner/junit,alb-i986/junit,kcooney/junit,powazny/junit4,junit-team/junit,kcooney/junit,panchenko/junit,ashleyfrieze/junit,powazny/junit4,stefanbirkner/junit,mekwin87/junit4,junit-team/junit4,mekwin87/junit4,mekwin87/junit4,ashleyfrieze/junit,stefanbirkner/junit,ashleyfrieze/junit,alb-i986/junit,junit-team/junit4,junit-team/junit,powazny/junit4,panchenko/junit,alb-i986/junit,kcooney/junit,junit-team/junit4,panchenko/junit