diff -r ad9fa99fa48e -r 532e88de77eb src/hotspot/share/oops/method.hpp
--- a/src/hotspot/share/oops/method.hpp	Thu Apr 04 17:23:05 2019 -0400
+++ b/src/hotspot/share/oops/method.hpp	Thu Apr 04 09:39:44 2019 +0200
@@ -180,8 +180,8 @@
   }
 
   // Helper routine: get klass name + "." + method name + signature as
-  // C string, for the purpose of providing more useful NoSuchMethodErrors
-  // and fatal error handling. The string is allocated in resource
+  // C string, for the purpose of providing more useful
+  // fatal error handling. The string is allocated in resource
   // area if a buffer is not provided by the caller.
   char* name_and_sig_as_C_string() const;
   char* name_and_sig_as_C_string(char* buf, int size) const;
@@ -190,6 +190,18 @@
   static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature);
   static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size);
 
+  // Get return type + klass name + "." + method name + ( parameters types )
+  // as a C string or print it to an outputStream.
+  // This is to be used to assemble strings passed to Java, so that
+  // the text more resembles Java code. Used in exception messages.
+  // Memory is allocated in the resource area; the caller needs
+  // a ResourceMark.
+  const char* external_name() const;
+  void  print_external_name(outputStream *os) const;
+
+  static const char* external_name(                  Klass* klass, Symbol* method_name, Symbol* signature);
+  static void  print_external_name(outputStream *os, Klass* klass, Symbol* method_name, Symbol* signature);
+
   Bytecodes::Code java_code_at(int bci) const {
     return Bytecodes::java_code_at(this, bcp_from(bci));
   }