Hi Sharma,
it will not create any of the java objects initailly..
You have to create those java objects based on your requirement by running inijvm.sql .....it is available under $ORACLE_HOME/javavm/install/initjvm.sql..

we generally (need to) run for the protal/any of the java applications...
we can even check dba_objects for the obkjects like '%JAVA%' ....and the count(*) should return >8000...then you are fine.Otherwise deinstall and reinstall..
Thanks.
Thanigaivasan.