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I have Eclipse 2019-09 and I’m working on a Java application using some Collection classes.

I needed to see all the available methods for the Map interface but when I pressed “Ctrl+Space”, auto-complete didn’t work. “No default proposals” message came up.

How can I enable IntelliSense for Java in Eclipse IDE?

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1 Answer 1

Reset to default
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I found a workaround to fix this issue in the below article.

Eclipse Java autocomplete not working

In Windows: 

Window->Preferences->Java->Editor->Content Assist->Advanced

In MacOSX:

Eclipse->Preferences->Java->Editor->Content Assist->Advanced

Then, make sure the following options are ticked in both top (default content assist list) and bottom (Content Assist Cycling) sections.

Java Non-Type Proposals
Java Proposals
Java Type Proposals

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