Plot4j

Plot4j is a Java library that permits to draw two-variables Diagrams in a Cartesian plan. The diagrams can be exported as images or visualized on Java Swing panels. If in your desktop application you want to show real-time data, and your graphs must refresh every n seconds, let`s say 2 seconds, you can set a refresh interval to your DiagramPanel: diagramPanel.setRefreshInterval(2000); In this way, the DiagramPanel will read the data every 2 seconds, refreshing the diagram on the screen.