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what is a sealed package?

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  what is a sealed package? "Jking" <jking@THRWHITE.remove-dii-this> - 2011-04-27 16:08 +0000
    Re: what is a sealed pack "=?ISO-8859-1?Q?Arne_Vajh=" <=?iso-8859-1?q?arne_vajh=@THRWHITE.remove-dii-this> - 2011-04-27 16:08 +0000

#148 — what is a sealed package?

  To: comp.lang.java.programmer
Hi,

I am quite confused about what is a sealed package.
In java.lang.Package, there is a method:

isSealed()

or

isSealed(URL url)

So why to seal a package ? the usage? how to make a package sealed?

Anyone could kindly explain it for me?

Thank you.

Justin

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#149 — Re: what is a sealed pack

  To: comp.lang.java.programmer
Jking wrote:
> I am quite confused about what is a sealed package.
> In java.lang.Package, there is a method:
> 
> isSealed()
> 
> or
> 
> isSealed(URL url)
> 
> So why to seal a package ? the usage? how to make a package sealed?
> 
> Anyone could kindly explain it for me?

http://java.sun.com/docs/books/tutorial/deployment/jar/sealman.html

Arne

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