How to use

getId

method

in

com.jme3.anim.Joint

@Override
public boolean contains(Object target) {
  return affectedJoints.get(((Joint) target).getId());
}

/**
 * Add joints to be influenced by this animation mask.
 */
public void addBones(Armature armature, String... jointNames) {
  for (String jointName : jointNames) {
    Joint joint = findJoint(armature, jointName);
    affectedJoints.set(joint.getId());
  }
}

private void recurseAddJoint(Joint joint) {
  affectedJoints.set(joint.getId());
  for (Joint j : joint.getChildren()) {
    recurseAddJoint(j);
  }
}

public static ArmatureMask createMask(Armature armature, String... joints) {
  ArmatureMask mask = new ArmatureMask();
  mask.addBones(armature, joints);
  for (String joint : joints) {
    mask.affectedJoints.set(armature.getJoint(joint).getId());
  }
  return mask;
}