--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/lib/testlibrary/bytecode/jdk/experimental/bytecode/MemberBuilder.java	Fri Sep 08 10:46:46 2017 -0700
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.experimental.bytecode;
+
+/**
+ * Class member builder.
+ *
+ * @param <S> the type of symbol representation
+ * @param <T> the type of type descriptors representation
+ * @param <E> the type of pool entries
+ * @param <M> the type of this builder
+ */
+public class MemberBuilder<S, T, E, M extends MemberBuilder<S, T, E, M>> extends DeclBuilder<S, T, E, M> {
+
+    CharSequence name;
+    T desc;
+
+    /**
+     * Create a member builder.
+     *
+     * @param name the name of the class member
+     * @param type the type descriptor of the class member
+     * @param poolHelper the helper to build the constant pool
+     * @param typeHelper the helper to use to manipulate type descriptors
+     */
+    MemberBuilder(CharSequence name, T type, PoolHelper<S, T, E> poolHelper, TypeHelper<S, T> typeHelper) {
+        super(poolHelper, typeHelper);
+        this.name = name;
+        this.desc = type;
+    }
+
+    /**
+     * Build the member.
+     *
+     * @param buf the {@code GrowableByteBuffer} to build the member into
+     */
+    protected void build(GrowableByteBuffer buf) {
+        addAnnotations();
+        buf.writeChar(flags);
+        buf.writeChar(poolHelper.putUtf8(name));
+        buf.writeChar(poolHelper.putType(desc));
+        buf.writeChar(nattrs);
+        buf.writeBytes(attributes);
+    }
+
+    /**
+     * Build the member.
+     *
+     * @return a byte array representation of the member
+     */
+    protected byte[] build() {
+        GrowableByteBuffer buf = new GrowableByteBuffer();
+        addAnnotations();
+        build(buf);
+        return buf.bytes();
+    }
+}