Java Package defnition -

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is there website can come know information about

  1. technical implementation possibilities
  2. where package used extensively
  3. why used?

for example timertask, used scheduling task execute in batch mode. other have other scenarios can use it?

please share information helpful.

i sorry if question appears vague, want learn possibilities in java

the offical java api: http://java.sun.com/javase/6/docs/api/index.html?overview-summary.html

and java book or tutorial tell lot of examples , possibilities java.


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