You can download eclipse for one of the languages, and then download plugins for this, or you can download four separate ZIP files and unzip them into one PARENT folder!
how
/Eclipse/Java /Eclipse/C /Eclipse/Cpp /Eclipse/Php
I'm not sure what will happen if you unpack them into one folder, but I would dissuade her. By unpacking them into a separate folder, you can run a specific eclipse installation for one of the views, so you do not have to switch views.
Also, I remember that having one version of eclipse with multiple plugins tends to do eclipse eclipses (at least at the time I used it more or less a year ago)
thomaux
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