make sure static ProxyFactory exists before instantiating static AnnotationFactory with it

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/proxy/branches/version-2.0-work@1000297 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/stub/src/main/java/org/apache/commons/proxy2/stub/AnnotationFactory.java b/stub/src/main/java/org/apache/commons/proxy2/stub/AnnotationFactory.java
index ae6dc37..346d113 100644
--- a/stub/src/main/java/org/apache/commons/proxy2/stub/AnnotationFactory.java
+++ b/stub/src/main/java/org/apache/commons/proxy2/stub/AnnotationFactory.java
@@ -45,9 +45,34 @@
  */
 public class AnnotationFactory {
     /** Statically available instance */
-    public static final AnnotationFactory INSTANCE = new AnnotationFactory();
+    public static final AnnotationFactory INSTANCE;
 
-    //underlying proxyfactory implementation based on org.apache.commons.proxy2.jdk.JdkProxyFactory
+    private static final ProxyFactory PROXY_FACTORY;
+
+    static {
+
+        //underlying proxyfactory implementation based on org.apache.commons.proxy2.jdk.JdkProxyFactory
+        PROXY_FACTORY = new AbstractProxyFactory() {
+
+            public <T> T createInvokerProxy(ClassLoader classLoader, final Invoker invoker, Class<?>... proxyClasses) {
+                throw new UnsupportedOperationException();
+            }
+
+            @SuppressWarnings("unchecked")
+            public <T> T createInterceptorProxy(ClassLoader classLoader, Object target, Interceptor interceptor,
+                Class<?>... proxyClasses) {
+                return (T) Proxy.newProxyInstance(classLoader, proxyClasses, new InterceptorInvocationHandler(target,
+                    interceptor));
+            }
+
+            public <T> T createDelegatorProxy(ClassLoader classLoader, ObjectProvider<?> delegateProvider,
+                Class<?>... proxyClasses) {
+                throw new UnsupportedOperationException();
+            }
+        };
+
+        INSTANCE = new AnnotationFactory();
+    }
 
     private static class InterceptorInvocationHandler implements InvocationHandler, Serializable {
         /** Serialization version */
@@ -116,25 +141,6 @@
         }
     }
 
-    private static final ProxyFactory PROXY_FACTORY = new AbstractProxyFactory() {
-
-        public <T> T createInvokerProxy(ClassLoader classLoader, final Invoker invoker, Class<?>... proxyClasses) {
-            throw new UnsupportedOperationException();
-        }
-
-        @SuppressWarnings("unchecked")
-        public <T> T createInterceptorProxy(ClassLoader classLoader, Object target, Interceptor interceptor,
-            Class<?>... proxyClasses) {
-            return (T) Proxy.newProxyInstance(classLoader, proxyClasses, new InterceptorInvocationHandler(target,
-                interceptor));
-        }
-
-        public <T> T createDelegatorProxy(ClassLoader classLoader, ObjectProvider<?> delegateProvider,
-            Class<?>... proxyClasses) {
-            throw new UnsupportedOperationException();
-        }
-    };
-
     private static final Invoker ANNOTATION_INVOKER = new Invoker() {
 
         /** Serialization version */