fixed exporter

src/main/java/de/tudresden/inf/st/pnml/splitter/export/PnmlExporter.java

@@ -45,11 +45,20 @@ public class PnmlExporter {
         Set<ArcHLAPI> convertedArcs = convertAndIncludeArcs(petriNet, convertedPages, convertedPlaces, convertedTransitions, convertedRefTransitions, convertedRefPlaces);
 
         // export the created objects to pnml
-        String targetPath = UUID.randomUUID().toString() + fileNameSuffix + ".pnml";
+        String homeDirectory = System.getProperty("user.dir");
+        String targetPath = homeDirectory + "/temp/pnml/" + UUID.randomUUID().toString() + fileNameSuffix + ".pnml";
         boolean hasFailed = false;
 
+
+
+
         try {
             File myObj = new File(targetPath);
+
+            if (!myObj.exists()){
+                myObj.getParentFile().mkdirs();
+            }
+
             if (myObj.createNewFile()) {
                 // logger.info("File created: " + myObj.getName());
             } else {