Welcome to ADTPro!
To get started, you will need a Java installation you can call from the command line of your host computer. This means that if you type the command java -version from a terminal window it ought to produce a Java message and not complaints. One place to get a downloadable Java distribution is from Oracle: Java SE JRE download. When you get there, look for a Java SE JRE download button. Download for your platform and install it, paying careful attention on Windows to 32-bit or 64-bit versions; letting Oracle pick for you has been known to result in the incorrect version being installed.
If the the JRE you install results in a "java.lang.UnsupportedClassVersionError" error, first confirm you downloaded the correct JRE version, and not (for example) the 32-bit version of Java which would not be correct for a 64-bit OS. If the JRE still does not work for you, try try installing the latest JDK version of Java (which sometimes contains a newer version of Java, which hasn't yet made it to the JRE distribution. The main downside of using the JDK is a larger disk requirement on the host.
The ADTPro distribution comes as a single file named something similar to ADTPro-2.1.0 with an extension particular to the target platform:
(The "2.1.0" part signifies the Version, Release, and Modification numbers of the particular version of ADTPro you're looking at.)
Installation steps:
Please open an issue for any troubles, bugs, requests for help, etc. at GitHub:
https://github.com/ADTPro/adtpro/issues
Good luck - and have fun!
The distribution should contain most of these files, depending on platform:
adtpro.bat - A Windows server startup batch file
ADTPro-2.1.0.app - An OSX server application for OSX 10.6 and above
ADTPro.command - An OSX server startup command file
adtpro.sh - A Linux server startup shell script
ac.bat - A Windows AppleCommander command line invoker batch file
ac.sh - A Linux AppleCommander command line invoker script
LICENSE - The GNU Public License file
README - The info you're looking at now, mostly
disks/ADTPRO-2.1.0.DSK - ADTPro Apple II client-side software (an Apple 140K disk image)
disks/ADTPROSOS-2.1.0.DSK - ADTPro Apple /// client-side software (an Apple 140K disk image)
disks/ADTPRO-2.1.0.PO - ADTPro Apple II client-side software (an Apple 800K disk image)
disks/VDRIVE-2.1.0.DSK - Virtual drive driver software (see the virtual drive section)
disks/Virtual.po - A blank example virtual disk that is served to virtual drive requests
disks/Virtual2.po - A blank example virtual disk that is served to virtual drive requests
lib/ADTPro-2.1.0.jar - ADTPro server-side software (a Java .jar file)
lib/AppleCommander/AppleCommander-2.1.0.p-ac.jar - AppleCommander support software (a Java .jar file)
lib/jssc/... - Java serial library files