java_gen: adapt to of_g removal, new ir
diff --git a/lang_java.py b/lang_java.py
index 3891076..f103330 100644
--- a/lang_java.py
+++ b/lang_java.py
@@ -31,5 +31,5 @@
 
 import java_gen.codegen as java_codegen
 
-def generate():
-    java_codegen.gen_all_java()
+def generate(install_dir):
+    java_codegen.gen_all_java(install_dir)