@Override
    public String toString() {
        return "(" + x + ", " + y + ", " + z + ", " + w + ")";
    }
<code>toString</code> returns the string representation of this vector.
The format is:

(XX.XXXX, YY.YYYY, ZZ.ZZZZ, WW.WWWW)

@return the string representation of this vector.
jme3-core/src/main/java/com/jme3/math/Vector4f.java