I don't know what happened but the intellisense just disappeared; how to get it back? I tried creating new projects, rebooting, doesn't help.
Try this: Go to Preferences » Java » Editor » Content Assist » Advanced. Make sure Other Java Proposals is ticked/checked.
Did you reset the preferences of default options in 'Windows > Preferences > Java > Editor > Content Assist > Advanced
', like mentioned in this answer?
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