public void mult(float scalar, Vector3f product) { if(null == product) { product = new Vector3f(); }  product.x = x * scalar; product.y = y * scalar; product.z = z * scalar;
public Vector3f mult(float scalar) { return new Vector3f(x*scalar, y*scalar, z*scalar);
    public void mult(float scalar, Vector3f product) {        if(null == product) {            product = new Vector3f();        }        product.x = x * scalar;        product.y = y * scalar;        product.z = z * scalar;    }