I have now seen a few of your messages,
and they often do not have enough
information to help you.

Sometimes people can describe program
output well enough to get help, but you
are not a fluent(or confident) speaker
of english.

One good way to get help is to give us
an SSCCE* that shows the broken behaviour,
it is a short piece of code that requires
no other libraries to compile and run.

For more information on the SSCCE, see
<http://www.physci.org/codes/sscce>

But before you go rushing into posting
a code example, note that many of the
questions you ask, are answered in the
Java Tutorial and JavaDocs, and you
should work through the Java Tutorial,
and look over the methods of relevant
classes in the cods., before posting -
because people will generally not do
that for you.

Andrew T.