@Override
    public void simpleUpdate(float tpf) {
        frameTime += tpf;

        if (timeToNextPrint > 0f) {
            timeToNextPrint -= tpf;
            return;
        }

        if (firstPrint) { // synchronize
            frameTime = 0.;
            physicsTime = 0.;
            firstPrint = false;
        }

        System.out.printf(" frameTime= %s   physicsTime= %s%n",
                frameTime, physicsTime);
        timeToNextPrint = 1f;
    }
Test case for JME issue #883: extra physicsTicks in ThreadingType.PARALLEL.

<p>If successful, physics time and frame time will advance at the same rate.
jme3-examples/src/main/java/jme3test/bullet/TestIssue883.java