How to use

getParent

method

in

com.jme3.anim.Joint

/**
 * Creates an armature from a joint list.
 * The root joints are found automatically.
 * <p>
 * Note that using this constructor will cause the joints in the list
 * to have their bind pose recomputed based on their local transforms.
 *
 * @param jointList The list of joints to manage by this Armature
 */
public Armature(Joint[] jointList) {
  this.jointList = jointList;
  List<Joint> rootJointList = new ArrayList<>();
  for (int i = jointList.length - 1; i >= 0; i--) {
    Joint joint = jointList[i];
    joint.setId(i);
    instanciateJointModelTransform(joint);
    if (joint.getParent() == null) {
      rootJointList.add(joint);
    }
  }
  rootJoints = rootJointList.toArray(new Joint[rootJointList.size()]);
  createSkinningMatrices();
  for (int i = rootJoints.length - 1; i >= 0; i--) {
    Joint rootJoint = rootJoints[i];
    rootJoint.update();
  }
}

System.err.println("-----------------------");
System.err.println("Selected Joint : " + selectedjoint.getName() + " in armature " + ad.getName());
System.err.println("Root Bone : " + (selectedjoint.getParent() == null));
System.err.println("-----------------------");
System.err.println("Local translation: " + selectedjoint.getLocalTranslation());