XChart is a light-weight and convenient library for plotting data. Its focus is on simplicity and ease-of-use, requiring only two lines of code to save or display a basic default chart.
Usage is very simple: Create a Chart instance, add a series of data to it, and either save it or display it.
Simplicity prioritized over everything else so you can quickly make a chart and move on.
Use in your Swing, Java EE or Java SE applications.
Apache 2.0 open source license means you can use it worry-free in your personal and commercial projects.