This addon is a modification of TextField, which accepts only number input and has new properties. 1. Enable/disable negative values #setSigned. Default true. 2. Enable/disable number grouping #setUseGrouping. Default false. 3. Setting grouping separator #setGroupingSeparator. Default character dot character. 4. Enable/disable decimal numbers #setDecimal. Default false. 5. Setting decimal separator #setDecimalSeparator. Default value space character. If you want to get converted value, you need to use binder and set custom converter by calling ` binderBuilder.forField(field)` `.withConverter(createStringToIntegerConverter())` For demo you could checkout and run demo app from [here](https://github.com/ojkey/master/tree/master/vaadinWidgets/vaadin-demo).