Fix Spotless formatting violations

- Remove unused import in CacheUtils.java
- Fix import order in CacheUtilsPermissionsTest.java
- Fix line length and string concatenation formatting

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: cowwoc

src/main/java/org/apache/maven/buildcache/CacheUtils.java

@@ -30,7 +30,6 @@
 import java.nio.file.attribute.BasicFileAttributes;
 import java.nio.file.attribute.FileTime;
 import java.nio.file.attribute.PosixFilePermission;
-import java.nio.file.attribute.PosixFilePermissions;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashSet;
@@ -42,7 +41,6 @@
 import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
 import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
 import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
-
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.Strings;
 import org.apache.commons.lang3.mutable.MutableBoolean;
@@ -168,7 +166,8 @@ public static boolean isArchive(File file) {
      * @return true if at least one file has been included in the zip.
      * @throws IOException
      */
-    public static boolean zip(final Path dir, final Path zip, final String glob, boolean preservePermissions) throws IOException {
+    public static boolean zip(final Path dir, final Path zip, final String glob, boolean preservePermissions)
+            throws IOException {
         final MutableBoolean hasFiles = new MutableBoolean();
         // Check once if filesystem supports POSIX permissions instead of catching exceptions for every file
         final boolean supportsPosix = preservePermissions

src/test/java/org/apache/maven/buildcache/CacheUtilsPermissionsTest.java

@@ -18,9 +18,6 @@
  */
 package org.apache.maven.buildcache;
 
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.io.TempDir;
-
 import java.io.IOException;
 import java.io.OutputStream;
 import java.nio.charset.StandardCharsets;
@@ -31,6 +28,9 @@
 import java.util.Arrays;
 import java.util.Set;
 
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
@@ -70,7 +70,7 @@ void testPermissionsAffectFileHashWhenEnabled() throws IOException {
         Path sourceDir2 = tempDir.resolve("source2");
         Files.createDirectories(sourceDir2);
         Path file2 = sourceDir2.resolve("script.sh");
-        writeString(file2, "#!/bin/bash\necho hello");  // Identical content
+        writeString(file2, "#!/bin/bash\necho hello"); // Identical content
 
         // Set non-executable permissions (644)
         Set<PosixFilePermission> normalPermissions = PosixFilePermissions.fromString("rw-r--r--");
@@ -87,10 +87,11 @@ void testPermissionsAffectFileHashWhenEnabled() throws IOException {
         byte[] hash2 = Files.readAllBytes(zip2);
 
         boolean hashesAreDifferent = !Arrays.equals(hash1, hash2);
-        assertTrue(hashesAreDifferent,
-                "ZIP files with same content but different permissions should have different hashes " +
-                "when preservePermissions=true. This ensures cache invalidation when permissions change " +
-                "(executable vs non-executable files).");
+        assertTrue(
+                hashesAreDifferent,
+                "ZIP files with same content but different permissions should have different hashes "
+                        + "when preservePermissions=true. This ensures cache invalidation when permissions change "
+                        + "(executable vs non-executable files).");
     }
 
     /**
@@ -119,7 +120,7 @@ void testPermissionsDoNotAffectHashWhenDisabled() throws IOException {
         Path sourceDir2 = tempDir.resolve("source2");
         Files.createDirectories(sourceDir2);
         Path file2 = sourceDir2.resolve("script.sh");
-        writeString(file2, "#!/bin/bash\necho hello");  // Identical content
+        writeString(file2, "#!/bin/bash\necho hello"); // Identical content
 
         // Set non-executable permissions (644)
         Set<PosixFilePermission> normalPermissions = PosixFilePermissions.fromString("rw-r--r--");
@@ -147,12 +148,12 @@ void testPermissionsDoNotAffectHashWhenDisabled() throws IOException {
 
         // Files should NOT retain their original different permissions
         // Both should have default permissions determined by umask
-        assertFalse(perms1.equals(execPermissions) && perms2.equals(normalPermissions),
-                "When preservePermissions=false, original permissions should NOT be preserved. " +
-                "Files should use system default permissions (umask).");
+        assertFalse(
+                perms1.equals(execPermissions) && perms2.equals(normalPermissions),
+                "When preservePermissions=false, original permissions should NOT be preserved. "
+                        + "Files should use system default permissions (umask).");
     }
 
-
     /**
      * Java 8 compatible version of Files.writeString().
      */