diff --git a/schema_salad/java_codegen.py b/schema_salad/java_codegen.py
index 09790842..e3f288fc 100644
--- a/schema_salad/java_codegen.py
+++ b/schema_salad/java_codegen.py
@@ -280,6 +280,9 @@ def begin_class(
   private LoadingOptions loadingOptions_ = new LoadingOptionsBuilder().build();
   private java.util.Map<String, Object> extensionFields_ =
       new java.util.HashMap<String, Object>();
+  public java.util.Map<String, Object> getExtensionFields() {
+    return this.extensionFields_;
+    }
 """.format(
                     package=self.package,
                     cls=cls,