src/share/classes/java/lang/reflect/Executable.java

@@ -80,11 +80,11 @@
                getDeclaringClass());
     }
 
     void separateWithCommas(Class<?>[] types, StringBuilder sb) {
         for (int j = 0; j < types.length; j++) {
-            sb.append(Field.getTypeName(types[j]));
+            sb.append(types[j].getTypeName());
             if (j < (types.length - 1))
                 sb.append(",");
         }
 
     }

@@ -159,13 +159,11 @@
             specificToGenericStringHeader(sb);
 
             sb.append('(');
             Type[] params = getGenericParameterTypes();
             for (int j = 0; j < params.length; j++) {
-                String param = (params[j] instanceof Class)?
-                    Field.getTypeName((Class)params[j]):
-                    (params[j].toString());
+                String param = params[j].getTypeName();
                 if (isVarArgs() && (j == params.length - 1)) // replace T[] with T...
                     param = param.replaceFirst("\\[\\]$", "...");
                 sb.append(param);
                 if (j < (params.length - 1))
                     sb.append(',');