@Override
    public float getVolume() {
        return 4 * FastMath.ONE_THIRD * FastMath.PI * radius * radius * radius;
    }
<code>toString</code> returns the string representation of this object.
The form is: "Radius: RRR.SSSS Center: vector".

@return the string representation of this.
jme3-core/src/main/java/com/jme3/bounding/BoundingSphere.java