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diff --git a/startop/tools/view_compiler/java_lang_builder.h b/startop/tools/view_compiler/java_lang_builder.h
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+++ b/startop/tools/view_compiler/java_lang_builder.h
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+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef JAVA_LANG_BUILDER_H_
+#define JAVA_LANG_BUILDER_H_
+
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+// Build Java language code to instantiate views.
+//
+// This has a very small interface to make it easier to generate additional
+// backends, such as a direct-to-DEX version.
+class JavaLangViewBuilder {
+ public:
+  JavaLangViewBuilder(std::string package, std::string layout_name, std::ostream& out = std::cout)
+      : package_(package), layout_name_(layout_name), out_(out) {}
+
+  // Begin generating a class. Adds the package boilerplate, etc.
+  void Start() const;
+  // Finish generating a class, closing off any open curly braces, etc.
+  void Finish() const;
+
+  // Begin creating a view (i.e. process the opening tag)
+  void StartView(const std::string& class_name);
+  // Finish a view, after all of its child nodes have been processed.
+  void FinishView();
+
+ private:
+  const std::string MakeVar(std::string prefix);
+
+  std::string const package_;
+  std::string const layout_name_;
+
+  std::ostream& out_;
+
+  size_t view_id_ = 0;
+
+  struct StackEntry {
+      // The class name for this view object
+      const std::string class_name;
+
+      // The variable name that is holding the view object
+      const std::string view_var;
+
+      // The variable name that holds the object's layout parameters
+      const std::string layout_params_var;
+  };
+  std::vector<StackEntry> view_stack_;
+};
+
+#endif  // JAVA_LANG_BUILDER_H_