public void setShininess(float shininess) {
        this.shininess = shininess;
        if (material != null) {
            material.setFloat("Shininess", shininess);
        }
    }
Sets the shininess factor of the water
default is 0.7f

@param shininess the desired factor (default=0.7)
jme3-effects/src/main/java/com/jme3/water/WaterFilter.java