Fix quality flaws

1 files changed, 9 insertions, 6 deletions

diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/utils/ZipUtils.java b/sonar-plugin-api/src/main/java/org/sonar/api/utils/ZipUtils.java
index 45903251411..66da90e88ae 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/utils/ZipUtils.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/utils/ZipUtils.java
@@ -65,15 +65,18 @@ public final class ZipUtils {
   }
 
   public static File unzip(InputStream zip, File toDir) throws IOException {
-    unzip(zip, toDir, new ZipEntryFilter() {
-      @Override
-      public boolean accept(ZipEntry entry) {
-        return true;
-      }
-    });
+    unzip(zip, toDir, TrueZipEntryFilter.INSTANCE);
     return toDir;
   }
 
+  private enum TrueZipEntryFilter implements ZipEntryFilter {
+    INSTANCE;
+    @Override
+    public boolean accept(ZipEntry entry) {
+      return true;
+    }
+  }
+
   public static File unzip(InputStream stream, File toDir, ZipEntryFilter filter) throws IOException {
     if (!toDir.exists()) {
       FileUtils.forceMkdir(toDir);