diff --git a/java_gen/templates/of_class.java b/java_gen/templates/of_class.java
index aa68d04..00c7019 100644
--- a/java_gen/templates/of_class.java
+++ b/java_gen/templates/of_class.java
@@ -354,6 +354,8 @@
         //:: for prop in msg.data_members:
         //:: if prop.java_type.pub_type == 'long':
         result = prime *  (int) (${prop.name} ^ (${prop.name} >>> 32));
+        //:: elif prop.java_type.pub_type == 'boolean':
+        result = prime * result + (${prop.name} ? 1231 : 1237);
         //:: elif prop.java_type.is_primitive:
         result = prime * result + ${prop.name};
         //:: elif prop.java_type.is_array:
diff --git a/java_gen/templates/of_factory_class.java b/java_gen/templates/of_factory_class.java
index 86b092a..7329fc2 100644
--- a/java_gen/templates/of_factory_class.java
+++ b/java_gen/templates/of_factory_class.java
@@ -42,6 +42,10 @@
     public final static ${factory.name} INSTANCE = new ${factory.name}();
     private ${factory.name}() {}
 
+    public OFVersion getOFVersion() {
+        return OFVersion.OF_${factory.version.of_version};
+    }
+
     //:: for name, clazz in factory.interface.sub_factories.items():
     public ${clazz} ${name}() {
         return ${clazz}Ver${factory.version.of_version}.INSTANCE;
diff --git a/java_gen/templates/of_factory_interface.java b/java_gen/templates/of_factory_interface.java
index 634362d..5cf4052 100644
--- a/java_gen/templates/of_factory_interface.java
+++ b/java_gen/templates/of_factory_interface.java
@@ -57,9 +57,10 @@
     Match.Builder buildMatch();
 //:: #endif
 
+    OFVersion getOFVersion();
     OFMessageReader<${factory.base_class}> getReader();
-
 //:: if factory.name == 'OFOxms':
+
     public <F extends OFValueType<F>> OFOxm<F> fromValue(F value, MatchField<F> field);
     public <F extends OFValueType<F>> OFOxm<F> fromValueAndMask(F value, F mask, MatchField<F> field);
     public <F extends OFValueType<F>> OFOxm<F> fromMasked(Masked<F> masked, MatchField<F> field);