Hello.    This is more a question of curiousity than actually needing a
performance increase.
I was wondering if the Java compiler (I am using Sun's j2sdk 1.4.2_10) will
change Math.PI * 2.0 into a constant in bytecode, or should I make a final

I'm coding a simple cell phone application that reads a resource file
as follows:
InputStream is = getClass().getResourceAsStream("help.txt");
I was told,J2ME can read files outside the jar by specifying / before

I need to replace a tab for every 4 consecutive spaces for a statement
which is included in an array. I've set another index array to mark
whether the content is space, if the index become 4, if change to tab.
But it seems hard to go back the previous index to delete the previous

I am using property file to get a rate revision date. When I first use
the
getServletConfig().getServletContext().getRealPath("ratecheck.properties"),
i got the non-static method ServletConfig() can not be used in static