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Q) How is java classified?


A) Sun micro Systems divided java into 3 platforms or 3 editions
1) Standard edition (j2se)
2) Enterprise edition (j2ee)
3) Micro edition (j2me)

The core java is the Standard edition (j2se). The core means base, so, for j2ee & j2me the base is j2se.
i.e., in j2se the oop learning of java and the platform independency of java is learning here.

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