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The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes unboxing issues Big Moose Saloon
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unboxing issues

Adeyemi Adeseye

Joined: Jan 10, 2009
Posts: 27
can someone explain why this code gives a null pointer exception at runtime

SCJP 6.0 (83%)
Kamil Wojcik
Ranch Hand

Joined: May 19, 2008
Posts: 78

because default value for Integer (it's an Object!) is NULL

SCJP 6.0 Passed | SCWCD Passed | PSM in progress...
Adeyemi Adeseye

Joined: Jan 10, 2009
Posts: 27
oh, tanks, that skipped my mind.
It is sorta covered in the JavaRanch Style Guide.
subject: unboxing issues
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