I'm trying to make a jar file from eclipse (no problem), but the problem is the following: my program accesses some classes that are bundled in an additional jar file, so I've imported this additional ...

There are various instances of this issue that we get such as JAVAC’, JRE, ‘MVN’, JAR’ is not recognized as an internal or external command, operable program or batch file, ‘Java’ is not recognized as ...