java3d License to re-distribute

 I have in Sourceforge a program based on Java3d (project cliper). It is distributed in a JAR which includes Java3D.
  Today license field in sourceforge page is  : GNU General public license version 3.0 (GPLv3).
 Is it correct ??

 A user review said that I should include license text in the distributed material, so I am looking for that.

 Here is my question :

 * what is the correct license text to include for re-distributing Java3d ?
 * For my own code I think it may be used as needed (copied, duplicated, grabbed, changed,...).
   So, should I include a separate text to tell that, or use another license for my code ?.

 Thank you for help.
 jfp
 

Java3D complete license:
https://jogamp.org/cgit/java3d/java3d-core.git/tree/LICENSE.txt
https://github.com/philjord/java3d-core/blob/master/LICENSE.txt
https://github.com/hharrison/java3d-core/blob/master/LICENSE.txt

GPLv2 + classpath exception

Summary:

 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation. Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).

Thank you...