Eclipse: Blacklist types from code completion

Is there a way to blacklist certain types from consideration i开发者_运维技巧n Eclipse's code completion?

For example, I use Google Collection's com.google.common.collect.Lists class quite often. What I will do is type "Lists" then Ctrl-space and select a method (like newArrayList()) and Eclipse will add the import statements automatically. But one annoying thing is that TestNG has the same identical class with a different package name org.testng.v6.Lists and often I will select the TestNG version by mistake.

Is there a way to "blacklist" org.testng.v6.Lists from consideration in code completion so I don't import it by mistake?

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You can set up Type Filters to do this. See the section "Suppress types in content assist" here for more information.

Here are some screen shots for posterity:

Open the preferences dialog and go to Java -> Appearance -> Type Filters:

Click the "Add..." button:

Now it should appear in the Filter list: