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Eclipse Optimize Imports to Include Static Imports

Posted by: admin November 2, 2017 Leave a comment

Questions:

Is there anyway to get Eclipse to automatically look for static imports? For example, now that I’ve finally upgraded to Junit 4, I’d like to be able to write:

assertEquals(expectedValue, actualValue);

hit Ctrl + Shift + O and have Eclipse add:

import static org.junit.Assert.assertEquals;

Maybe I’m asking too much.

Answers:

I’m using Eclipse Europa, which also has the Favorite preference section:

Window > Preferences > Java > Editor > Content Assist > Favorites

In mine, I have the following entries (when adding, use “New Type” and omit the .*):

org.hamcrest.Matchers.*
org.hamcrest.CoreMatchers.*
org.junit.*
org.junit.Assert.*
org.junit.Assume.*
org.junit.matchers.JUnitMatchers.*

All but the third of those are static imports. By having those as favorites, if I type “assertT” and hit Ctrl+Space, Eclipse offers up assertThat as a suggestion, and if I pick it, it will add the proper static import to the file.

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If you highlight the method Assert.assertEquals(val1, val2) and hit Ctrl + Shift + M (Add Import), it will add it as a static import, at least in Eclipse 3.4.

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Eclipse 3.4 has a Favourites section under Window->Preferences->Java->Editor->Content Assist

If you use org.junit.Assert a lot, you might find some value to adding it there.

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Not exactly what I wanted, but I found a workaround. In Eclipse 3.4 (Ganymede), go to

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

and check the checkbox for Use static imports (only 1.5 or higher).

This will not bring in the import on an Optimize Imports, but if you do a Quick Fix (CTRL + 1) on the line it will give you the option to add the static import which is good enough.

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From Content assist for static imports

To get content assist proposals for static members configure your list of favorite static members on the Opens the Favorites preference page Java > Editor > Content Assist > Favorites preference page.
For example, if you have added java.util.Arrays.* or org.junit.Assert.* to this list, then all static methods of this type matching the completion prefix will be added to the proposals list.

Open Window » Preferences » Java » Editor » Content Assist » Favorites

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With http://www.3pintech.com/products/fast-code/ plugin you could static import a class. Then all the static member will come as code assist. You might want to take a look at that.

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For SpringFramework Tests, I would recommend to add the below as well

org.springframework.test.web.servlet.request.MockMvcRequestBuilders
org.springframework.test.web.servlet.request.MockMvcResponseBuilders
org.springframework.test.web.servlet.result.MockMvcResultHandlers
org.springframework.test.web.servlet.result.MockMvcResultMatchers
org.springframework.test.web.servlet.setup.MockMvcBuilders
org.mockito.Mockito

When you add above as new Type it automatically add .* to the package.