scripting: replace '.size() == 0' with '.isEmpty()' (collections)

http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Map.html#isEmpty()
http://docs.oracle.com/javase/1.5.0/docs/api/java/util/ArrayList.html#isEmpty()

Change-Id: I76d8d8be2794655cb27ab121759494d7084b4744
Reviewed-on: https://gerrit.libreoffice.org/11967Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>

scripting/java/com/sun/star/script/framework/container/ParcelDescriptor.java

@@ -352,7 +352,7 @@ public class ParcelDescriptor {
         item.setAttribute("value", script.getLanguageName());
         root.appendChild(item);
 
-        if (languagedepprops != null && languagedepprops.size() != 0) {
+        if (languagedepprops != null && !languagedepprops.isEmpty()) {
             String key;
             item = document.createElement("languagedepprops");
 

scripting/java/com/sun/star/script/framework/container/ScriptMetaData.java

@@ -212,7 +212,7 @@ public class ScriptMetaData extends ScriptEntry {
 
             }
 
-            if (classPathVec.size() == 0) {
+            if (classPathVec.isEmpty()) {
                 URL url = createURL(parcelPath);
 
                 if (url != null) {