After Install JDK 8 on Raspberry Pi, you can try the Java SE Development Kit 8 Update 6 Demos and Samples for ARM on Raspberry Pi.
JDK 8 for ARM Downloads (http://www.oracle.com/technetwork/java/javase/downloads/jdk8-arm-downloads-2187472.html) provide download of Java SE Development Kit 8 Update 6 Demos and Samples for ARM.
The video below show the demo of Java2Demo run on Raspberry Pi.
- This Java2D demo consists of a set of demos housed in one GUI framework that uses a JTabbedPane. You can access different groups of demos by clicking the tabs at the top of the pane. There are demo groups for Arcs_Curves, Clipping, Colors, Composite, Fonts, Images, Lines, Mix, Paint, Paths and Transforms. On the right-hand side of the pane, the GUI framework features individual and global controls for changing graphics attributes. There's also a memory-usage monitor, and a monitor for tracking the performance, in frames per second, of animation demos.
Download and unpack the Java SE Development Kit 8 Update 6 Demos and Samples for ARM, copy file /demo/jfc/Java2D/Java2Demo.jar to Raspberry Pi, run the command on Raspberry Pi in Terminal (under X-window environment).
$ java -jar Java2Demo.jar
Direct run on Raspberry Pi, output to HDMI: