Java checkstyle import statement indentation

Question

I'm trying to prevent inconsistent indentations in import statements like this:

...
import org.apache.commons.lang3.tuple.ImmutablePair;
import org.apache.commons.lang3.tuple.Pair;
import org.jetbrains.annotations.NotNull;
import org.junit.After;
    import org.junit.Before;            // ← this line
import org.junit.Test;
import org.junit.runner.RunWith;
...

The Indentation module doesn't do the trick, nor does the import config

What am I missing? Thanks.

VGR · Accepted Answer · 2020-11-20 02:28:27Z

1

I’m pretty sure the Indentation rule is only meant for content of blocks (if, for, while, switch, etc.).

Use RegexpSinglelineJava instead:

<module name="RegexpSinglelineJava">
    <property name="format" value="^\s+import\b"/>
    <property name="message" value="import statements must start in the first column."/>
    <property name="ignoreComments" value="true"/>
</module>

answered Nov 20, 2020 at 2:28

VGR

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2 Comments

sming Over a year ago

Nice! Thanks. It's surprising that import statements are not covered out of the box, to me at least.

sming Over a year ago

So. It turns out that the Indentation module does not cover import statements in 6.19. However it does cover import statements in 8.37. So to summarize: use @VGR's solution above for 6.19 (6.x too?) and the Indentation module for 8.37 (8.x too ?). Cheers @VGR!

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