inoltre ho impostato questo.....

codice:
gianni@ubuntu:~$ sudo update-alternatives --config java
Password:

There are 3 alternatives which provide `java'.

  Selection    Alternative
-----------------------------------------------
      1        /usr/bin/gij-wrapper-4.1
 +    2        /usr/lib/jvm/java-gcj/jre/bin/java
*     3        /usr/lib/jvm/java-1.5.0-sun/jre/bin/java

Press enter to keep the default[*], or type selection number:
scegliendo la 3a opzione......