diff --git a/infer/src/java/jConfig.ml b/infer/src/java/jConfig.ml
index 02fd21e29..fe3aa65d5 100644
--- a/infer/src/java/jConfig.ml
+++ b/infer/src/java/jConfig.ml
@@ -7,7 +7,6 @@
  *)
 
 open! IStd
-open Javalib_pack
 
 (** {2 Class names and types} *)
 
@@ -15,12 +14,6 @@ let builtins_package = "com.facebook.infer.builtins"
 
 let infer_builtins_cl = builtins_package ^ ".InferBuiltins"
 
-let obj_type = JBasics.TObject (JBasics.TClass JBasics.java_lang_object)
-
-let string_cl = "java.lang.String"
-
-let class_cl = "java.lang.Class"
-
 let npe_cl = "java.lang.NullPointerException"
 
 let cce_cl = "java.lang.ClassCastException"
diff --git a/infer/src/java/jConfig.mli b/infer/src/java/jConfig.mli
index 40a1919ec..7494728ca 100644
--- a/infer/src/java/jConfig.mli
+++ b/infer/src/java/jConfig.mli
@@ -6,13 +6,6 @@
  *)
 
 open! IStd
-open Javalib_pack
-
-val string_cl : string
-
-val class_cl : string
-
-val obj_type : JBasics.value_type
 
 val boolean_code : string
 
diff --git a/infer/src/java/jTrans.ml b/infer/src/java/jTrans.ml
index 67213cac0..6e11af20a 100644
--- a/infer/src/java/jTrans.ml
+++ b/infer/src/java/jTrans.ml
@@ -175,6 +175,10 @@ let get_constant (c : JBir.const) =
       Const.Cint (IntLit.of_int64 i64)
   | `String jstr ->
       Const.Cstr (JBasics.jstr_pp jstr)
+  | `MethodType _ ->
+      raise (Frontend_error "MethodType constant")
+  | `MethodHandle _ ->
+      raise (Frontend_error "MethodHandle constant")
 
 
 let get_binop typ binop =
@@ -256,7 +260,7 @@ let get_bytecode cm =
         Array.map
           ~f:(function
             | JCode.OpInvoke (`Dynamic _, ms) ->
-                JCode.OpInvoke (`Static JBasics.java_lang_object, ms)
+                JCode.OpInvoke (`Static (`Class, JBasics.java_lang_object), ms)
             | opcode ->
                 opcode )
           bytecode.JCode.c_code
diff --git a/infer/src/java/jTransType.ml b/infer/src/java/jTransType.ml
index 1a87f16af..05e6865e4 100644
--- a/infer/src/java/jTransType.ml
+++ b/infer/src/java/jTransType.ml
@@ -51,23 +51,7 @@ let cast_type = function
       Typ.mk (Typ.Tint Typ.IShort)
 
 
-let const_type const =
-  match const with
-  | `String _ ->
-      JBasics.TObject (JBasics.TClass (JBasics.make_cn JConfig.string_cl))
-  | `Class _ ->
-      JBasics.TObject (JBasics.TClass (JBasics.make_cn JConfig.class_cl))
-  | `Double _ ->
-      JBasics.TBasic `Double
-  | `Int _ ->
-      JBasics.TBasic `Int
-  | `Float _ ->
-      JBasics.TBasic `Float
-  | `Long _ ->
-      JBasics.TBasic `Long
-  | `ANull ->
-      JConfig.obj_type
-
+let const_type const = JBir.type_of_expr (JBir.Const const)
 
 let typename_of_classname cn = Typ.Name.Java.from_string (JBasics.cn_name cn)
 
diff --git a/opam.locked b/opam.locked
index 950b340e8..e6aa01ed0 100644
--- a/opam.locked
+++ b/opam.locked
@@ -53,14 +53,14 @@ depends: [
   "cppo" {= "1.6.5"}
   "cppo_ocamlbuild" {= "1.6.0"}
   "ctypes" {= "0.14.0"}
-  "dune" {= "1.6.2"}
+  "dune" {= "1.6.3"}
   "easy-format" {= "1.3.1"}
   "elina" {= "1.1"}
   "extlib" {= "1.7.5"}
   "fieldslib" {= "v0.11.0"}
   "integers" {= "0.2.2"}
   "jane-street-headers" {= "v0.11.0"}
-  "javalib" {= "2.3.6"}
+  "javalib" {= "3.0"}
   "jbuilder" {= "transition"}
   "menhir" {= "20181113"}
   "mlgmpidl" {= "1.2.7"}
@@ -108,7 +108,7 @@ depends: [
   "ppxlib" {= "0.3.1"}
   "re" {= "1.8.0"}
   "result" {= "1.3"}
-  "sawja" {= "1.5.5"}
+  "sawja" {= "1.5.6"}
   "seq" {= "base"}
   "sexplib" {= "v0.11.0"}
   "sexplib0" {= "v0.11.0"}