public class JBulletCollisionGroup extends CollisionGroup {
it's on the package "impl.jbullet.src.com.jmex.physics.impl.jbullet" << which have a VERY strange name O.o
any ideas on wth happended? (i don't even remember when this happened)
There would be no problem with "impl.jbullet.src.com.jmex.physics.impl.jbullet" as a package name, the same words can appear as many times as you like. In this case tho, the package should just be "com.jmex.physics.impl.jbullet"
Im an eclipse user, not netbeans, but it should be as simple as right click on the project in netbeans and with "source" selected on the left look in the "source package folders" on the right.
Remove whats already there for jbullet, and add a new folder choosing "C:/jME2/jME2Physics/impl/jbullet/src/"