Re: Color to Hex string

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#698

From: Alan Shiers
Date: Wed, 01 Dec 2004 13:30

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> I do not know of one that exists already, but it is not very hard to write
> one:
>
> public String convertColorToHexString(java.awt.Color c)
> {
>    String str = Integer.toHexString( c.getRGB() & 0xFFFFFF );
>    return ( "#" + "000000".substring( str.length() ) +
str.toUpperCase() );
> }

Wow.  That's all I really needed.

Just curious about one thing though, John.  On the second line you write:

"000000".substring( str.length() )

Why is this necessary?  I wrote out a println statement:
System.out.println("substring = " + "000000".substring( str.length() ));
And all this does is return an empty string.  Why concatonate with an empty
string? Is there some reason for this?

Alan

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