code: public static boolean isDefaultValue(final String value) {
  		if (value == null || value.equals("") || value.equals("0,00") || value.equals("0")) {
  			return true;
  		}
  		return false;
  	}
docs: Checks if a given value is the default value. Default value can be
  <ul>
  <li>{@code null}</li>
  <li>empty string</li>
  <li>0</li>
  <li>0,00</li>
  </ul>
  
  @param value
  the value to check
  @return {@code true} if the value is the default value, {@code false} otherwise