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instance field

pooja jain
Ranch Hand

Joined: Jan 12, 2005
Posts: 213
I read this statement from core java - cays - sun microsystems book .

interface can't have instance field & implemented method .

implemented method is OK but what is the meaning of instance field .

thanks in advance .
pooja .

M Beck
Ranch Hand

Joined: Jan 14, 2005
Posts: 323
unless i'm badly mistaken, an "implemented field" is to variables what an "instance method" is to a procedure / code snippet. that is, a variable that wouldn't be considered fully virtual, one that would be instantiated if the class were to be instantiated. i might be wrong, though.
Mike Gershman
Ranch Hand

Joined: Mar 13, 2004
Posts: 1272
an instance field is a non-static variable

interface variables are always static, final, and public. These modifiers can be used but are unnecessary.

Mike Gershman
SCJP 1.4, SCWCD in process
It is sorta covered in the JavaRanch Style Guide.
subject: instance field