Ctrl + Space not working for content assist on eclipse

Question

My problem is that the content assist window won\'t pop up after clicking Ctrl + Space. I checked my shortcuts and the content assist is bound to Ctrl + S

Answer 1

Go to Windows > Preferences > Java > Editor > Content Assist > Advanced > select all Java only. If you select all, then multiple occurrence of same instance would be shown in Suggestion list. which might be annoying some times.