A common use case for the TextFormatter class in JavaFX is a text field that should convert any lower-case character input into an upper-case character. This can be achieved easily by defining a filter for the text formatter as described here. A straightforward implementation could look like this:

private UnaryOperator …

There are a lot of code examples for restricting or modifying user input into a JavaFX text field. Most examples I have seen suggest adding a change listener to the text field's text property. Here's how you would allow only lower-case characters in your text field using the change listener …

Now that I have understood what a DTO is good for, I'm thinking about ways to improve it. As they are right now, our DTOs are POJOs extended by JSR 303 annotations for defining constraints on their fields/methods. The annotations are duplicates of the annotations defined on the corresponding …

A new version of the fancy chart control is available at https://github.com/tesis-dynaware/fancy-chart

This version supports zooming for the XY chart: by dragging the mouse, you can select an area in the chart to scale the selected area up to full size of the chart. This allows …

JavaFX is a great UI toolkit. TestFX is a great library for testing the user interfaces written in JavaFX. Writing graphical tests with TestFX is simple and fast, but one challenge remains when you build your software using a headless build machine: how can you perform your UI tests in …

A new version of the fancy chart control is available at https://github.com/tesis-dynaware/fancy-chart

Data can now be imported and exported to CSV, XLS, and HDF5 files. A lot of code was refactored to make it easier to support other file formats in the future.

Due to popular demand, I published the source code for the combined LineChart and TableView control mentioned in this post to Github. You can find the sources here:

https://github.com/tesis-dynaware/fancy-chart

(click to watch the video)

This video shows a widget for displaying three characteristics (velocity vs. distance) in a LineChart node and a tabbed TableView node. The two nodes provide different views on the same data.

The widget comes with the following features:

• hovering over a data point in the …

The following video shows a custom control in JavaFX that lets you select items from a list and position them in a grid. The items represent UI widgets, that is, JavaFX controls, with a defined size on the grid. The grid represents a page on which these widgets will be …

Another thing we've been working on is going to see the light of day soon: a graph editor for JavaFX. The current beta version provides the following main features:

• create draggable, resizable nodes and connections between them
• add multiple input or output connectors to a node
• create joints inside a …