I have a question,it is very puzzle to me.I have a class named PreReadError,it works
well,it can read data from the file "error.data".For example:
...
public static void main()
{
String str;
PreReadError test=new PreReadError();
str=(String )test.getTable("Error0");
System.out.println("Found Error0");
System.out.println("It's value is "+str);
...
}
When I run it,it will show:
Found Error0
It's value is 3
But when I use this class "PreReadError" in a servlet,for example:
...
public class GetUserIdentity extends HttpServlet
{
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
PreReadError test=new PreReadError();
PrintWriter out=response.getWriter();
out.println("<html>");
out.println("<body>");
String str=(String )test.getTable("Error0");
out.println("<p> It's value is "+str+"</p>");
....
}
Then I use deploytool which contained by j2sdkee1.3.1,I use it to deploy my class
GetUserIdentity
When I run it,it should show:
It's value is 3
But it shows:
It's value is null
Why?
I'm very puzzled with it.
Any idea will be appreciated!
Thanks in advances!
Edward
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