Removed concrete type usage

git-svn-id: https://svn.apache.org/repos/asf/directmemory/lightning/trunk@1407049 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lightning-maven-plugin/src/main/java/org/apache/directmemory/lightning/maven/SupportUtil.java b/lightning-maven-plugin/src/main/java/org/apache/directmemory/lightning/maven/SupportUtil.java
index 83b4c58..4dd9625 100644
--- a/lightning-maven-plugin/src/main/java/org/apache/directmemory/lightning/maven/SupportUtil.java
+++ b/lightning-maven-plugin/src/main/java/org/apache/directmemory/lightning/maven/SupportUtil.java
@@ -24,7 +24,6 @@
 import java.io.IOException;
 import java.io.LineNumberReader;
 import java.nio.charset.Charset;
-import java.util.ArrayList;
 import java.util.List;
 
 public final class SupportUtil
@@ -34,7 +33,7 @@
     {
     }
 
-    public static List<File> recursiveGetAllJavaSources( File file, ArrayList<File> list, FileFilter fileFilter )
+    public static List<File> recursiveGetAllJavaSources( File file, List<File> list, FileFilter fileFilter )
     {
         if ( file.isDirectory() )
         {