Forbid no/abundant whitespace before array initializer

Forbid these

    new int[]{...

    new int[]    {....

Author: findepi

CHANGES.md

@@ -2,6 +2,7 @@ Airbase 149
 * Remove bval dependency
 * Checkstyle updates:
   - Disallow single-line non-empty lambda and method body code blocks.
+  - Require exactly one space between array type and array initializer.
 * Plugin updates:
   - git-commit-id-maven-plugin 7.0.0 (from 6.0.0)
   - spotbugs-maven-plugins 4.8.1.0 (from 4.7.3.6)

airbase-policy/src/main/resources/checkstyle/airbase-checks.xml

@@ -272,6 +272,14 @@
             <property name="ignoreComments" value="true" />
         </module>
 
+        <module name="RegexpSinglelineJava">
+            <!-- Forbid "new Type[]{",  IntelliJ would reformat adding a space -->
+            <!-- Forbid "new Type[]  {",  IntelliJ would reformat removing a space -->
+            <property name="format" value="new\s++\w++(&lt;\?&gt;)?(\[\])++(?! )\s*+\{" />
+            <property name="message" value="Incorrect whitespace before array initializer" />
+            <property name="ignoreComments" value="true" />
+        </module>
+
         <!-- javadoc -->
         <module name="RequireEmptyLineBeforeBlockTagGroup" />
         <module name="NonEmptyAtclauseDescription" />