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Answers and rating deltas for

How to solve this NullPointerException? I it should avoid that

Author Votes Δ
harshithdwivedi 0 +0.11
markgiaconia 0 +0.02
shalvah 0 -0.21
Lino 0 -0.01
Last visited: Jun 24, 2017, 4:03:14 PM