Java library that allows matching many thousands of Events per second
Event Ruler (called Ruler in the rest of the doc for brevity) is a Java library that allows matching Rules to Events. An event is a list of fields, which may be given as name/value pairs or as a JSON object. A rule associates event field names with lists of possible values. Event Ruler is a Java library that allows matching many thousands of Events per second to any number of expressive and sophisticated rules.
JDrafting is an open source Java application to create Technical Drawing exercises.
This application is inspired by the 'Classical Construction', also known as 'Ruler-and-compass Construction' or 'Compass-and-straightedge construction'. However, another drawing tools can be used.
(More info about classical construction: https://en.wikipedia.org/w/index.php?title=Compass-and-straightedge_construction)
Download examples in 'Files tab'
JRE 8+ needed
Github:
https://github.com/miguelalejandromorenobarrientos/jdrafting
Android version (not compatible)
https://sourceforge.net/projects/andrafting/
Pixel Ace is pixel ruler for your computer. This tool can be used to measure items (in pixels) on your computer. Measure items horizontally and vertically. Expand the ruler into a box view and measure the height and width of items behind it.
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Battlefield Java is simple grid and turned based battle simulation game for Java developers. It requires you to develop a Ruler to control your game pieces. Battlefield Java is a great way to learn Java while having fun and doing battle with your friends.
DM Ruler helps dungeon master to create rules, senario, worlds, maps, monsters database, spells database, and so on. Everything can be customize with xml files. Build your own system or use an existing one.
Route Ruler helps runners, hikers, bikers, etc., plot & measure routes. Load a map, set your scale and click along the route's path to calculate the distance.