Calling a class from another class

Is there a way to call another class from the main class? Pretty new to java!
Matt VilkAsked:
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Martin MillerCTOCommented:
You're asking a common OO, Object Oriented question, main()::  is just a kick-off, or starting point. You can instantiate, and "call" another class, you will need to import/add package where the other class is defined. There is more to this... that links to build and classpath. But your simple answer is YES.

I found one link that may be of reference for you:

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you will need to import/add package where the other class is defined.

?. Could you expand on this please?
Martin MillerCTOCommented:
Can we close this question ?
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