How to stop Eclipse formatter from placing all enums on one line
Solution 1
The answer by @wjans worked fine for normal enums, but not for enums with arguments. To expand on his answer a bit, here's the settings that provided the most sensible formatting for me in Eclipse Juno:
Window
>Preferences
>Java
>Code Style
>Formatter
- Click
Edit
- Select the
Line Wrapping
tab - Select the
enum
declaration treenode - Set
Line wrapping policy
toWrap all elements, every element on a new line (...)
so it now says 3 of 3 in the parenthesis. - Uncheck
Force split, even if line shorter than maximum line width (...)
so it now says 3 of 3 in the parenthesis. - Select the
Constants
treenode - Check
Force split, even if line shorter than maximum line width
This sets the 3 subnodes for the enum treenode to the same wrapping policy, and the same force split policy except for the Constants
treenode, so your enums with arguments will be formatted each on their own line. The arguments will only wrap if they exceed maximum line width.
Examples:
@wjans
enum Example {
CANCELLED,
RUNNING,
WAITING,
FINISHED
}
enum Example {
GREEN(
0,
255,
0),
RED(
255,
0,
0)
}
Solution described above:
enum Example {
CANCELLED,
RUNNING,
WAITING,
FINISHED
}
enum Example {
GREEN(0, 255, 0),
RED(255, 0, 0)
}
Solution 2
You can specify this in your formatter preferences:
- Preferences: Java -- Code Style -- Formatter
- Click Edit
- Select the 'Line Wrapping' tab
- Select 'enum' declaration -> Constants in the box on the left
- Set Line wrapping policy to 'Wrap all elements, every element on a new line'
- Check 'Force split...'
Solution 3
It's slightly ugly too, but if your company policy prevents you from changing the formatter, you can just put comments at the end of lines you don't want to be wrapped.
public static enum Command
{
login,//
register,//
logout,//
newMessage//
};
Solution 4
It's not nice but you can turn the Eclipse formatter off for some sections of code...
// @formatter:off
public static enum Command {
login,
register,
logout,
newMessage
};
// @formatter:on
the option is in the Windows->Preferences->Java->Code Style->Formatter->Edit->Off/On Tags panel
Solution 5
You need to set the line wrapping policy under enum declaration for "Constants."
Set the wrapping policy to
- Wrap all elements, every element on a new line
AND
- Check the box that says "Force Split, even if line shorter than,,,,,
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MetaChrome
Updated on July 08, 2022Comments
-
MetaChrome almost 2 years
I have enums like:
public static enum Command { login, register, logout, newMessage }
When formatting the file, the output becomes:
public static enum Command { login, register, logout, newMessage }
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Paramesh Korrakuti over 5 yearsIs there any variable in external formatter (org.eclipse.jdt.core.formatter......) to enforce each enum variable in a separate line?
-
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Bob Kuhar over 12 yearsThis works...kind of. The compiler now thinks its an error. Putting them in comments overcomes this problem like // @formatter:off
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Ben Thurley over 10 yearsStill looks wrong in the eclipse previewer for me but when I tried it on the actual source it worked like a charm. Thanks.
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LegendLength almost 7 yearsI had this problem for months. The thing I didn't try was "force split". Not sure why it should be needed as you'd think "wrap all elements" would actually wrap all elements! Thanks for the solution.
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Tob about 2 yearsThank you, could you post the corresponding XML markup from a eclipse-codeformatter.xml?