howcanicastanobjecttoanintinjava？
if you ' resurethatthisobjectisaninteger :
intI=(integer ) object；
Or，starting from Java 7，you can equivalently write:
intI=(int ) object；
Beware，itcanthrowaclasscastexceptionifyourobjectisn ' tanintegerandanullpointerexceptionifyourobjectisnull。
thiswayyouassumethatyourobjectisaninteger (thewrappedint ) and you unbox it into an int。
intisaprimitivesoitcan ' tbestoredasanobject，theonlywayistohaveanintconsidered/boxedasanintegerthenstoredasanobject。
If your object is a String，thenyoucanusetheinteger.value of (methodtoconvertitintoasimpleint 3360
inti=integer.value of ((字符串) object；
itcanthrowanumberformatexceptionifyourobjectisn ' treallyastringwithanintegerascontent。
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