diff -Nru velocity-tools-2.0-src/src/main/java/org/apache/velocity/tools/view/ImportSupport.java velocity-tools-2.0-src.servlet/src/main/java/org/apache/velocity/tools/view/ImportSupport.java
--- velocity-tools-2.0-src/src/main/java/org/apache/velocity/tools/view/ImportSupport.java	2007-12-12 18:04:38.000000000 +0100
+++ velocity-tools-2.0-src.servlet/src/main/java/org/apache/velocity/tools/view/ImportSupport.java	2015-06-19 15:50:41.054584752 +0200
@@ -36,6 +36,7 @@
 import javax.servlet.RequestDispatcher;
 import javax.servlet.ServletContext;
 import javax.servlet.ServletOutputStream;
+import javax.servlet.WriteListener;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpServletResponseWrapper;
@@ -510,6 +511,14 @@
                     {
                         bos.write(b);
                     }
+
+                    public void setWriteListener(WriteListener listener) {
+                        throw new UnsupportedOperationException("Not implemented yet.");
+                    }
+
+                    public boolean isReady() {
+                        return false;
+                    }
                 };
             return sos;
         }
diff -Nru velocity-tools-2.0-src/src/main/java/org/apache/velocity/tools/view/ParameterTool.java velocity-tools-2.0-src.servlet/src/main/java/org/apache/velocity/tools/view/ParameterTool.java
--- velocity-tools-2.0-src/src/main/java/org/apache/velocity/tools/view/ParameterTool.java	2009-05-12 00:24:53.000000000 +0200
+++ velocity-tools-2.0-src.servlet/src/main/java/org/apache/velocity/tools/view/ParameterTool.java	2015-06-19 15:45:11.950303234 +0200
@@ -174,7 +174,7 @@
         Map source = super.getSource();
         if (source == null)
         {
-            source = expandSingletonArrays(getRequest().getParameterMap());
+            source = expandSingletonArrays((Map<String,Object>)(Object)getRequest().getParameterMap());
             super.setSource(source);
         }
         return source;