Flipped NO_MASK and FULL_MASK, fixed (IPv4|IPv6)WithMask to use constant masks and a typo in Prerequisites.java.
diff --git a/java_gen/pre-written/src/main/java/org/openflow/types/VlanPcp.java b/java_gen/pre-written/src/main/java/org/openflow/types/VlanPcp.java
index 138d7be..ccbaa63 100644
--- a/java_gen/pre-written/src/main/java/org/openflow/types/VlanPcp.java
+++ b/java_gen/pre-written/src/main/java/org/openflow/types/VlanPcp.java
@@ -10,8 +10,8 @@
     
     private final byte pcp;
     
-    public static final VlanPcp FULL_MASK = VlanPcp.of((byte)0xFF);
-    public static final VlanPcp NO_MASK = VlanPcp.of((byte)0x0);
+    public static final VlanPcp NO_MASK = VlanPcp.of((byte)0xFF);
+    public static final VlanPcp FULL_MASK = VlanPcp.of((byte)0x0);
     
     private VlanPcp(byte pcp) {
         this.pcp = pcp;