http://www.cs.duke.edu/csed/jflap/new/DOCS/
JFLAP requires the presence of Java 1.3.1 or later. If you do not have Java of this version or later, see Sun's Java page for a download for your OS.
Assuming Java is properly installed on your system, running JFLAP requires only the presence of the JFLAP.jar file. Here are instructions on how to run JFLAP once Java has been properly installed on several platforms:
| Mac OS X | Double click on the JFLAP.jar file. |
| Unix/Linux | From the directory with the JFLAP.jar, execute java -jar JFLAP.jar from your favorite shell. |
| Windows | Double click on the JFLAP.jar file. |
Following this, JFLAP should start with the list of different structures to start with. If it does not, check your Java installation.