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i've already selected Preferences -> Java -> Editor -> Content Assist for all types. but i couldn't save the settings. when i restart eclipse it will reset to defaults.i.e. untick Java Type Proposal and others.

i've tested this in eclipse 3.7.2, eclipse 4.2.1, eclipse-jee-indigo-SR2-linux-gtk

My Java version 1.6.0_38

thanks

amila ariyasingha
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You have some potential causes for Eclipse settings not being saved properly in "Can't save project preferences in Eclipse".
This thread warns again installation of Eclipse done as an Administrator (even though in the end, the actual cause was a faulty Windows(!) installation).

But the safest path would be to create a new workspace and see if the issue persists ie, can you save your settings and preferences in that new workspace).

Community
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VonC
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  • i've investigate this further and found everytime i'm restarting eclipse org.eclipse.jdt.ui.prefs add following entry. content_assist_disabled_computers=org.eclipse.jdt.ui.javaNoTypeProposalCategory\u0000org.eclipse.jdt.ui.textProposalCategory\u0000org.eclipse.jdt.ui.javaTypeProposalCategory\u0000 – amila ariyasingha Dec 21 '12 at 08:18
  • @user1920633 do you see the same issue with a "naked" Eclipse (without plugins)? As in https://bugs.eclipse.org/bugs/show_bug.cgi?id=310761, where Mylyn prevented that settings? – VonC Dec 21 '12 at 08:48
  • my eclipse 3.7.2 is a "naked" eclipse. when i create a simple JAVA project,the entry content_assist_disabled_computers=org.eclipse.jdt.ui.javaNoTypeProposalCategory\‌​u00000org.eclipse.jdt.ui.javaTypeProp‌​osalCategory\u0000 added to org.eclipse.jdt.ui.prefs. then i've changed those in Preferences -> Java -> Editor -> Content Assist. prefs file updated correctly. still conent assist not working. after restarting eclipse and goto Preferences -> Java -> Editor -> Content Assist those entries has been added automatically. – amila ariyasingha Dec 21 '12 at 09:38