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Answers and rating deltas for

Why does my class cause 'NullPointerException' when I try to add a string to my ArrayList?

Author Votes Δ
Eran 10 +0.67
BobTheBuilder 7 +0.05
Chiseled 2 +0.52
karvoynistas 0 -2.18
Frank 0 -2.46
Last visited: Apr 27, 2015, 10:06:15 PM