from the command line. Replace [file location] with the path of the downloaded JAR file, of course. Also, be sure to execute java.exe from within the directory you unzipped to (so that the CCU can locate the 'bin' directory). If you plan on creating Java classes that extend existing custom classes, make sure that the superclasses are included in your classpath as well:
If you wish to import to or export from a database, ensure that your JDBC drivers are included in the classpath. Lastly, if your CLASSPATH is quoted (in order to accommodate directories with spaces in them), ccu.bat may claim to be unable to find a class. This is because "ccu.jar;%CLASSPATH%" evaluates to a classpath with a quote in the middle. Try manually editing ccu.bat and remove the '-cp' (and its associated parameter). You'll then need to put the JAR file in your CLASSPATH manually.
usage
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Once you're up and running, create a new project (File >> New) and insert entities (Tools >> Insert >> Entity) and attributes (Tools >> Insert >> Attribute) as necessary. Alternatively, you can import elements from a database with the 'Import' & 'JDBC...' buttons.
troubleshooting
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If the CCU will not start using the above methods, try double-clicking the executable 'ccu.jar'. If in a Windows environment, one might also attempt to run 'ccu.exe'. If this fails, activate 'check_jvm.exe' in order to verify that the JVM is found properly. When running 'ccu.exe', JVM parameters can be specified with "-J[VM parameter]" (e.g. -J-Xmx512m). If difficulties occur in transferring project files from one computer to another, be certain that identical versions of the CCU are in use; the application build time can be found at the end of this file.
