diff --git a/core/src/main/java/org/mapfish/print/http/MfClientHttpRequestFactoryImpl.java b/core/src/main/java/org/mapfish/print/http/MfClientHttpRequestFactoryImpl.java
index 9407c35e0e..d877248c20 100644
--- a/core/src/main/java/org/mapfish/print/http/MfClientHttpRequestFactoryImpl.java
+++ b/core/src/main/java/org/mapfish/print/http/MfClientHttpRequestFactoryImpl.java
@@ -113,7 +113,7 @@ private static final class RandomizingDnsResolver extends SystemDefaultDnsResolv
     public InetAddress[] resolve(final String host) throws UnknownHostException {
       final List<InetAddress> list = Arrays.asList(super.resolve(host));
       Collections.shuffle(list);
-      return list.toArray(new InetAddress[list.size()]);
+      return list.toArray(new InetAddress[0]);
     }
   }
 
diff --git a/core/src/main/java/org/mapfish/print/map/image/wms/WmsUtilities.java b/core/src/main/java/org/mapfish/print/map/image/wms/WmsUtilities.java
index c15a0dce66..56c982abe2 100644
--- a/core/src/main/java/org/mapfish/print/map/image/wms/WmsUtilities.java
+++ b/core/src/main/java/org/mapfish/print/map/image/wms/WmsUtilities.java
@@ -4,10 +4,10 @@
 import com.google.common.collect.Multimap;
 import java.awt.Dimension;
 import java.io.IOException;
+import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
-import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -52,21 +52,7 @@ public static URI makeWmsGetLayerRequest(
       final double angle,
       final ReferencedEnvelope bounds)
       throws FactoryException, URISyntaxException, IOException {
-    if (commonURI == null || commonURI.getAuthority() == null) {
-      throw new RuntimeException("Invalid WMS URI: " + commonURI);
-    }
-    String[] authority = commonURI.getAuthority().split(":");
-    URL url;
-    if (authority.length == 2) {
-      url =
-          new URL(
-              commonURI.getScheme(),
-              authority[0],
-              Integer.parseInt(authority[1]),
-              commonURI.getPath());
-    } else {
-      url = new URL(commonURI.getScheme(), authority[0], commonURI.getPath());
-    }
+    URL url = getUrl(commonURI);
     final GetMapRequest getMapRequest =
         WmsVersion.lookup(wmsLayerParam.version).getGetMapRequest(url);
     getMapRequest.setBBox(bounds);
@@ -86,7 +72,7 @@ public static URI makeWmsGetLayerRequest(
 
     Multimap<String, String> extraParams = HashMultimap.create();
     if (commonURI.getQuery() != null) {
-      for (NameValuePair pair : URLEncodedUtils.parse(commonURI, Charset.forName("UTF-8"))) {
+      for (NameValuePair pair : URLEncodedUtils.parse(commonURI, StandardCharsets.UTF_8)) {
         extraParams.put(pair.getName(), pair.getValue());
       }
     }
@@ -102,6 +88,25 @@ public static URI makeWmsGetLayerRequest(
     return URIUtils.addParams(getMapUri, extraParams, Collections.emptySet());
   }
 
+  private static URL getUrl(URI commonURI) throws MalformedURLException {
+    if (commonURI == null || commonURI.getAuthority() == null) {
+      throw new RuntimeException("Invalid WMS URI: " + commonURI);
+    }
+    String[] authority = commonURI.getAuthority().split(":");
+    URL url;
+    if (authority.length == 2) {
+      url =
+          new URL(
+              commonURI.getScheme(),
+              authority[0],
+              Integer.parseInt(authority[1]),
+              commonURI.getPath());
+    } else {
+      url = new URL(commonURI.getScheme(), authority[0], commonURI.getPath());
+    }
+    return url;
+  }
+
   private static void addDpiParam(
       final Multimap<String, String> extraParams, final int dpi, final ServerType type) {
     switch (type) {
@@ -117,7 +122,7 @@ private static void addDpiParam(
         break;
       case GEOSERVER:
         if (!contains(extraParams, FORMAT_OPTIONS)) {
-          extraParams.put(FORMAT_OPTIONS, "dpi:" + Integer.toString(dpi));
+          extraParams.put(FORMAT_OPTIONS, "dpi:" + dpi);
         } else if (!isDpiSet(extraParams)) {
           setDpiValue(extraParams, dpi);
         }
@@ -131,12 +136,6 @@ private static void addAngleParam(
       final Multimap<String, String> extraParams, final double angle, final ServerType type) {
     switch (type) {
       case MAPSERVER:
-        if (!contains(extraParams, "ANGLE")) {
-          extraParams.put("ANGLE", Double.toString(Math.toDegrees(angle)));
-        }
-        break;
-      case QGISSERVER:
-        break;
       case GEOSERVER:
         if (!contains(extraParams, "ANGLE")) {
           extraParams.put("ANGLE", Double.toString(Math.toDegrees(angle)));
@@ -179,7 +178,7 @@ private static void setDpiValue(final Multimap<String, String> extraParams, fina
         List<String> newValues = new ArrayList<>();
         for (String value : values) {
           if (!StringUtils.isEmpty(value)) {
-            value += ";dpi:" + Integer.toString(dpi);
+            value += ";dpi:" + dpi;
             newValues.add(value);
           }
         }
diff --git a/core/src/main/java/org/mapfish/print/processor/map/CreateMapPagesProcessor.java b/core/src/main/java/org/mapfish/print/processor/map/CreateMapPagesProcessor.java
index 0594d7fdc6..1d301a53df 100644
--- a/core/src/main/java/org/mapfish/print/processor/map/CreateMapPagesProcessor.java
+++ b/core/src/main/java/org/mapfish/print/processor/map/CreateMapPagesProcessor.java
@@ -199,7 +199,7 @@ public final Output execute(final Input values, final ExecutionContext context)
     }
     LOGGER.info("Paging generate {} maps definitions.", mapList.size());
     DataSourceAttributeValue datasourceAttributes = new DataSourceAttributeValue();
-    datasourceAttributes.attributesValues = mapList.toArray(new Map[mapList.size()]);
+    datasourceAttributes.attributesValues = mapList.toArray(new Map[0]);
     return new Output(datasourceAttributes);
   }
 
diff --git a/core/src/main/java/org/mapfish/print/servlet/job/impl/RegistryJobQueue.java b/core/src/main/java/org/mapfish/print/servlet/job/impl/RegistryJobQueue.java
index ae2a2d9fe4..a71008760e 100644
--- a/core/src/main/java/org/mapfish/print/servlet/job/impl/RegistryJobQueue.java
+++ b/core/src/main/java/org/mapfish/print/servlet/job/impl/RegistryJobQueue.java
@@ -217,7 +217,7 @@ private PrintJobStatusImpl load(final String referenceId)
       PrintJobStatus.Status status = PrintJobStatus.Status.valueOf(metadata.getString(JSON_STATUS));
 
       PJsonObject requestData = new PJsonObject(metadata.getJSONObject(JSON_REQUEST_DATA), "spec");
-      Long startTime = metadata.getLong(JSON_START_DATE);
+      long startTime = metadata.getLong(JSON_START_DATE);
       long requestCount = metadata.getLong(JSON_REQUEST_COUNT);
 
       JSONObject accessJSON = metadata.getJSONObject(JSON_ACCESS_ASSERTION);
diff --git a/core/src/main/java/org/mapfish/print/wrapper/multi/PMultiObject.java b/core/src/main/java/org/mapfish/print/wrapper/multi/PMultiObject.java
index ba50389b2c..0aefd1c909 100644
--- a/core/src/main/java/org/mapfish/print/wrapper/multi/PMultiObject.java
+++ b/core/src/main/java/org/mapfish/print/wrapper/multi/PMultiObject.java
@@ -135,7 +135,7 @@ public final PObject optObject(final String key) {
     if (results.size() == 1) {
       return results.get(0);
     }
-    return new PMultiObject(results.toArray(new PObject[results.size()]));
+    return new PMultiObject(results.toArray(new PObject[0]));
   }
 
   @Override