Eclipse formatter inserts whitespace before method on linebreak

Question

Using Eclipse Juno I've got the following issue using the Java code formatter:

If a method call leads to a line break, Eclipse inserts a whitespace before the "dot" of the method invocation (_ shall denote the whitespace)

int nbo = new Foo()//linebreak
    _.method();

Unfortunately this whitespace triggers a Checkstyle warning (NoWhitespaceBefore rule). Is there some possibility to stop eclipse inserting the whitespace? Or is it a Checkstyle configuration issue?

Thanks for your help in advance.

Answer 1

You can increase Maximum line width to 120 or bigger number.

1. On menu Windows -> Preferences
2. Navigate to Java -> Code Style -> Formatter
3. Click on Edit button to open a new dialog
4. On Line Wrapping tab, change Maximum line width
5. Finally, change Profile name and click OK

Answer 2

You can resolve this either by changing the formatter settings or by changing the Checkstyle configuration.

Option 1 - Formatter Settings (for Eclipse 4.3, but should be the same for Juno)

• Window → Preferences → Java → Code Style → Formatter → Edit
• Line Wrapping → Function Calls → Qualified Invocations
• Set to Do Not wrap

Option 2 - Checkstyle Config

• Remove the DOT token from the NoWhitespaceBefore rule:

<module name="NoWhitespaceBefore">
    <property name="tokens" value="SEMI,POST_DEC,POST_INC"/>
</module>