diff -r 3ca85da78515 -r b42bfc9e9983 src/main/java/de/unixwork/uwproj/Feature.java
--- a/src/main/java/de/unixwork/uwproj/Feature.java	Wed Sep 06 21:08:04 2023 +0200
+++ b/src/main/java/de/unixwork/uwproj/Feature.java	Wed Sep 06 22:55:42 2023 +0200
@@ -1,18 +1,9 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
- */
 package de.unixwork.uwproj;
 
-import java.util.LinkedList;
-import java.util.List;
 import org.w3c.dom.Element;
 
-/**
- *
- * @author olaf
- */
+import java.util.List;
+
 public class Feature {
     private String name;
     private String arg;
@@ -26,7 +17,7 @@
         String arg = e.getAttribute("arg");
         String def = e.getAttribute("default");
         
-        if(name.length() == 0) {
+        if(name.isEmpty()) {
             throw new Exception("feature element requires name attribute");
         }
         
@@ -34,7 +25,7 @@
         boolean on = ld.equals("on") || ld.equals("true");
         feature.setName(name);
         feature.setDefault(on);
-        if(arg.length() == 0) {
+        if(arg.isEmpty()) {
             feature.setArg(name);
         } else {
             feature.setArg(arg);
@@ -62,7 +53,7 @@
     }
     
     public boolean hasMake() {
-        return targetData.getMake().trim().length() > 0;
+        return !targetData.getMake().trim().isEmpty();
     }
 
     public String getName() {