Can I download the classic eclipse version and add packages that will get me any of the others that are offered for download?
I want the java development AND the C/C++ development versions but would like them in one eclipse installation. Is this possible or do I have to download two eclipses and keep two installations and run two versions?
You just need the one eclipse install. All packages can be installed via the Install Software menu options. The only difference between the Java and C/C++ versions is the packages that have been preinstalled thus saving time in the beginning setup.