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Re: Scope of a JLabel? Also "unchecked operation"

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"Stefan Ram" <ram@zedat.fu-berlin.de> wrote in message 
news:scope-20120104113206@ram.dialup.fu-berlin.de...
> "A B" <@bleBaker.uk> writes:
>>1)The program I'm writing is called Vectorine, never mind why.  Lately I 
>>get
>>this when I compile it: "[...]Vectorine.java uses unchecked or unsafe
>>operations.  Recompile with -Xlint: unchecked for details."  It doesn't 
>>seem
>>to stop it running, though, when I comment out the bit that causes problem
>>2).  It didn't do it before I introduced some Swing components.  What is
>>this?  Does it matter?
>
>  Recompile with -Xlint: unchecked for details.

Yes, but I don't know what that means.  What's -Xlint when it's at home?  Is 
it one of the gadgets in the JDK folder?  And what does it do?

>>2) The itemStateChanged method can't recognise a perfectly good JTextArea
>>that I want it to output to, just keeps saying that there is no variable
>>called "display".
>
>  I recommend to first learn language fundamentals (such as
>  the different scopes of Java) in isolation before one
>  tackles GUI programming.

Probably the best thing, if I had the patience, but anyway I've got it 
working now.
-- 
A. B.
><>
My e-mail address is zen177395 at  zendotcodotuk, though I don't check that 
account very often.
Post unto others as you would have them post unto you. 

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Thread

Scope of a JLabel?  Also "unchecked operation" "A B" <@bleBaker.uk> - 2012-01-03 19:02 +0000
  Re: Scope of a JLabel?  Also "unchecked operation" markspace <-@.> - 2012-01-03 11:05 -0800
  Re: Scope of a JLabel?  Also "unchecked operation" markspace <-@.> - 2012-01-03 11:18 -0800
    Re: Scope of a JLabel?  Also "unchecked operation" "A B" <@bleBaker.uk> - 2012-01-03 21:22 +0000
      Re: Scope of a JLabel?  Also "unchecked operation" markspace <-@.> - 2012-01-03 14:10 -0800
        Re: Scope of a JLabel?  Also "unchecked operation" "A B" <@bleBaker.uk> - 2012-01-04 21:05 +0000
          Re: Scope of a JLabel?  Also "unchecked operation" markspace <-@.> - 2012-01-04 13:10 -0800
          Re: Scope of a JLabel?  Also "unchecked operation" "Gavino" <invalid@invalid.invalid> - 2012-01-05 19:54 +0100
            Re: Scope of a JLabel?  Also "unchecked operation" "A B" <@bleBaker.uk> - 2012-01-12 18:51 +0000
  Re: Scope of a JLabel? Also "unchecked operation" "A B" <@bleBaker.uk> - 2012-01-04 20:58 +0000
    Re: Scope of a JLabel? Also "unchecked operation" "A B" <@bleBaker.uk> - 2012-01-12 18:53 +0000

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