diff --git a/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/catalog/CatalogRest.java b/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/catalog/CatalogRest.java
index 882b9ecf7..8a7b7e000 100644
--- a/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/catalog/CatalogRest.java
+++ b/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/catalog/CatalogRest.java
@@ -30,7 +30,7 @@ public Response catalogListFilterType( @PathParam("type") String type ) {
 					DocCatalogSample.getInstance().getPlaygroundCoreCatalog()
 						.stream().filter( e -> type.equalsIgnoreCase( e.getType() ) ).map( 
 								e -> new OptionItem( e.getId(), e.getDescription() ) 
-						).collect( Collectors.toList() ) ).build()
+						).toList() ).build()
 		);
 	}
 	
@@ -42,7 +42,7 @@ public Response catalogList() {
 					DocCatalogSample.getInstance().getPlaygroundCoreCatalog()
 						.stream().map( 
 								e -> new OptionItem( e.getId(), e.getDescription() ) 
-						).collect( Collectors.toList() ) ).build()
+						).toList() ).build()
 		);
 	}
 	
diff --git a/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/val/ValUtils.java b/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/val/ValUtils.java
index 3ed72c6bb..0c79dbe2f 100644
--- a/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/val/ValUtils.java
+++ b/fj-doc-playground-quarkus/src/main/java/org/fugerit/java/doc/playground/val/ValUtils.java
@@ -25,7 +25,7 @@ public static boolean isInTmpFolder( File tempFile ) throws IOException {
     public static Response doIfInTmpFolder(File tempFile,  UnsafeSupplier<Response, Exception> fun ) throws IOException {
         Response res = null;
         if ( isInTmpFolder( tempFile ) ) {
-            res = HelperIOException.get( () -> fun.get() );
+            res = HelperIOException.get( fun::get );
         } else {
             // no access
             res = Response.status(Response.Status.UNAUTHORIZED).build();
diff --git a/fj-doc-playground-quarkus/src/test/java/org/fugerit/java/doc/playground/ValUtilsTest.java b/fj-doc-playground-quarkus/src/test/java/org/fugerit/java/doc/playground/ValUtilsTest.java
index 69aa259c0..1a54ecec0 100644
--- a/fj-doc-playground-quarkus/src/test/java/org/fugerit/java/doc/playground/ValUtilsTest.java
+++ b/fj-doc-playground-quarkus/src/test/java/org/fugerit/java/doc/playground/ValUtilsTest.java
@@ -8,16 +8,16 @@
 import java.io.File;
 import java.io.IOException;
 
-public class ValUtilsTest {
+class ValUtilsTest {
 
     @Test
-    public void testDoIfInTmpFolder401() throws IOException  {
+    void testDoIfInTmpFolder401() throws IOException  {
         Response response = ValUtils.doIfInTmpFolder(new File("/"), () -> null);
         Assertions.assertEquals( Response.Status.UNAUTHORIZED.getStatusCode(),  response.getStatus() );
     }
 
     @Test
-    public void testDoIfInTmpFolder200() throws IOException  {
+    void testDoIfInTmpFolder200() throws IOException  {
         Response response = ValUtils.doIfInTmpFolder( new File( System.getProperty( "java.io.tmpdir" ), "test.txt" ), () -> null);
         Assertions.assertNull( response );
     }