public void setUseRipples(boolean useRipples) {
        this.useRipples = useRipples;
        if (material != null) {
            material.setBoolean("UseRipples", useRipples);
        }

    }
Set to true to use ripples

@param useRipples true to enable ripples, false to disable them
(default=true)
jme3-effects/src/main/java/com/jme3/water/WaterFilter.java