diff --git a/cxx/fbjni/detail/CoreClasses-inl.h b/cxx/fbjni/detail/CoreClasses-inl.h
index d325e41..156b059 100644
--- a/cxx/fbjni/detail/CoreClasses-inl.h
+++ b/cxx/fbjni/detail/CoreClasses-inl.h
@@ -304,6 +304,11 @@ inline void registerNatives(const char* name, std::initializer_list<JNINativeMet
   findClassLocal(name)->registerNatives(methods);
 }
 
+inline auto JClass::getCanonicalName() -> local_ref<JString> {
+  static auto meth = javaClassStatic()->getMethod<JString::javaobject()>("getCanonicalName");
+  return meth(self());
+}
+
 
 // jstring /////////////////////////////////////////////////////////////////////////////////////////
 
diff --git a/cxx/fbjni/detail/CoreClasses.h b/cxx/fbjni/detail/CoreClasses.h
index 7cd7858..5ff483e 100644
--- a/cxx/fbjni/detail/CoreClasses.h
+++ b/cxx/fbjni/detail/CoreClasses.h
@@ -37,6 +37,7 @@ namespace jni {
 
 class JClass;
 class JObject;
+class JString;
 
 namespace detail {
 
@@ -329,6 +330,9 @@ class JClass : public JavaClass<JClass, JObject, jclass> {
   template<typename F>
   JNonvirtualMethod<F> getNonvirtualMethod(const char* name, const char* descriptor) const;
 
+  /// Get the canonical name of the class
+  local_ref<JString> getCanonicalName();
+
 private:
   jclass self() const noexcept;
 };
@@ -604,6 +608,7 @@ class JThrowable : public JavaClass<JThrowable, JObject, jthrowable> {
 
   local_ref<JThrowable> initCause(alias_ref<JThrowable> cause);
   local_ref<JStackTrace> getStackTrace();
+  local_ref<JString> getMessage();
   void setStackTrace(alias_ref<JArrayClass<JStackTraceElement::javaobject>>);
 };
 
diff --git a/cxx/fbjni/detail/Exceptions.cpp b/cxx/fbjni/detail/Exceptions.cpp
index 22f6327..5e1aa00 100644
--- a/cxx/fbjni/detail/Exceptions.cpp
+++ b/cxx/fbjni/detail/Exceptions.cpp
@@ -186,6 +186,11 @@ void JThrowable::setStackTrace(alias_ref<JStackTrace> stack) {
   return meth(self(), stack);
 }
 
+auto JThrowable::getMessage() -> local_ref<JString> {
+  static auto meth = javaClassStatic()->getMethod<JString::javaobject()>("getMessage");
+  return meth(self());
+}
+
 auto JStackTraceElement::create(
     const std::string& declaringClass, const std::string& methodName, const std::string& file, int line)
     -> local_ref<javaobject> {