diff -r 9bd55fcb7f90 -r a0ad195efe2c jdk/src/share/classes/java/dyn/MethodType.java
--- a/jdk/src/share/classes/java/dyn/MethodType.java	Thu Dec 16 00:32:15 2010 -0800
+++ b/jdk/src/share/classes/java/dyn/MethodType.java	Thu Dec 16 15:59:27 2010 -0800
@@ -56,21 +56,33 @@
  * <p>
  * This type can be created only by factory methods.
  * All factory methods may cache values, though caching is not guaranteed.
+ * Some factory methods are static, while others are virtual methods which
+ * modify precursor method types, e.g., by changing a selected parameter.
+ * <p>
+ * Factory methods which operate on groups of parameter types
+ * are systematically presented in two versions, so that both Java arrays and
+ * Java lists can be used to work with groups of parameter types.
+ * The query methods {@code parameterArray} and {@code parameterList}
+ * also provide a choice between arrays and lists.
  * <p>
  * {@code MethodType} objects are sometimes derived from bytecode instructions
  * such as {@code invokedynamic}, specifically from the type descriptor strings associated
  * with the instructions in a class file's constant pool.
- * When this occurs, any classes named in the descriptor strings must be loaded.
- * (But they need not be initialized.)
- * This loading may occur at any time before the {@code MethodType} object is first derived.
  * <p>
- * Like classes and strings, method types can be represented directly
- * in a class file's constant pool as constants to be loaded by {@code ldc} bytecodes.
- * Loading such a constant causes its component classes to be loaded as necessary.
+ * Like classes and strings, method types can also be represented directly
+ * in a class file's constant pool as constants. The may be loaded by an {@code ldc}
+ * instruction which refers to a suitable {@code CONSTANT_MethodType} constant pool entry.
+ * The entry refers to a {@code CONSTANT_Utf8} spelling for the descriptor string.
+ * For more details, see the <a href="package-summary.html#mtcon">package summary</a>.
+ * <p>
+ * When the JVM materializes a {@code MethodType} from a descriptor string,
+ * all classes named in the descriptor must be accessible, and will be loaded.
+ * (But the classes need not be initialized, as is the case with a {@code CONSTANT_Class}.)
+ * This loading may occur at any time before the {@code MethodType} object is first derived.
  * @author John Rose, JSR 292 EG
  */
 public final
-class MethodType implements java.lang.reflect.Type {
+class MethodType {
     private final Class<?>   rtype;
     private final Class<?>[] ptypes;
     private MethodTypeForm form; // erased form, plus cached data about primitives
@@ -301,6 +313,14 @@
     }
 
     /** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}.
+     * @param ptypesToInsert zero or more a new parameter types to insert after the end of the parameter list
+     * @return the same type, except with the selected parameter(s) appended
+     */
+    public MethodType appendParameterTypes(List<Class<?>> ptypesToInsert) {
+        return insertParameterTypes(parameterCount(), ptypesToInsert);
+    }
+
+    /** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}.
      * @param num    the position (zero-based) of the inserted parameter type(s)
      * @param ptypesToInsert zero or more a new parameter types to insert into the parameter list
      * @return the same type, except with the selected parameter(s) inserted
@@ -508,7 +528,9 @@
      * parenthesis enclosed, comma separated list of type names,
      * followed immediately by the return type.
      * <p>
-     * If a type name is array, it the base type followed
+     * Each type is represented by its
+     * {@link java.lang.Class#getSimpleName simple name}.
+     * If a type name name is array, it the base type followed
      * by [], rather than the Class.getName of the array type.
      */
     @Override
@@ -517,35 +539,13 @@
         sb.append("(");
         for (int i = 0; i < ptypes.length; i++) {
             if (i > 0)  sb.append(",");
-            putName(sb, ptypes[i]);
+            sb.append(ptypes[i].getSimpleName());
         }
         sb.append(")");
-        putName(sb, rtype);
+        sb.append(rtype.getSimpleName());
         return sb.toString();
     }
 
-    static void putName(StringBuilder sb, Class<?> cls) {
-        int brackets = 0;
-        while (cls.isArray()) {
-            cls = cls.getComponentType();
-            brackets++;
-        }
-        String n = cls.getName();
-        /*
-        if (n.startsWith("java.lang.")) {
-            String nb = n.substring("java.lang.".length());
-            if (nb.indexOf('.') < 0)  n = nb;
-        } else if (n.indexOf('.') < 0) {
-            n = "."+n;          // anonymous package
-        }
-        */
-        sb.append(n);
-        while (brackets > 0) {
-            sb.append("[]");
-            brackets--;
-        }
-    }
-
     /// Queries which have to do with the bytecode architecture
 
     /** The number of JVM stack slots required to invoke a method