Re: Global enums and constants
On 2/14/12 3:10 PM, Davej wrote:
On Feb 14, 4:53 pm, Daniel Pitts
<newsgroup.nos...@virtualinfinity.net> wrote:
On 2/14/12 2:37 PM, Davej wrote:
I'm having trouble accessing constants. I know it is always best to
define a constant in only one place, but public or private I still
can't see it. What am I doing wrong? Thanks.
The problem is on line 15 of the example you posted.
In other words, we don't know what you've tried, what error messages you
see, or what you are really attempting to do. Please provide an SSCCE
<http://sscce.org/> and then we'll be able to help without the use of
clairvoyance.
Well, I had a constant CLASSFILEPATH defined here...
public final String CLASSFILEPATH = "/WEB-INF/ClassList.txt";
That is not exactly a constant. It is an instance field. You're missing
the static modifier.
This should do the trick:
public static final String CLASSFILEPATH = "/WEB-INF/ClassList.txt";
When you add "static", it means there is exactly one CLASSFILEPATH per
Student "class". Without the static it is per Student instance.
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Now note that the first file has an import for the second file. Still
the
constant cannot be seen inside the servlets package. The error is;
error: cannot find symbol
String path = sc.getRealPath(CLASSFILEPATH);
symbol: variable CLASSFILEPATH
location: class CalculateGradesServlet
1 error