How to use

getMotorSpeed

method

in

org.jbox2d.dynamics.joints.RevoluteJoint

@Override
public void processJoint(Joint joint, Long tag) {
 if (tag == JOINT_TAG) {
  m_joint = (RevoluteJoint) joint;
  isLeft = m_joint.getMotorSpeed() > 0;
 } else {
  super.processJoint(joint, tag);
 }
}

@Override
public void processJoint(Joint joint, Long tag) {
 if (tag == JOINT_TAG) {
  m_joint = (RevoluteJoint) joint;
  isLeft = m_joint.getMotorSpeed() > 0;
 } else {
  super.processJoint(joint, tag);
 }
}

builder.setUpperLimit(j.getUpperLimit());
builder.setEnableMotor(j.isMotorEnabled());
builder.setMotorSpeed(j.getMotorSpeed());
builder.setMaxMotorTorque(j.getMaxMotorTorque());
break;

 class RemindTask extends TimerTask {
    RevoluteJoint rj1;;
    RemindTask(RevoluteJoint rj){
    rj1 = rj;
  }
  @Override
  public void run() {
    Log.d("x","x" +"Reversing motor");
    reverseMotor();          
  }

  public void reverseMotor(){
    rj1.setMotorSpeed(-(rj1.getMotorSpeed()));
    rj1.setMaxMotorTorque(100);

  }
}