--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/lib/toolbox/ModuleBuilder.java	Mon May 02 16:17:39 2016 -0700
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2015, 2016, 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 toolbox;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ModuleBuilder {
+
+    private final ToolBox tb;
+    private final String name;
+    private String requires = "";
+    private String exports = "";
+    private String uses = "";
+    private String provides = "";
+    private String modulePath = "";
+    private List<String> content = new ArrayList<>();
+
+    public ModuleBuilder(ToolBox tb, String name) {
+        this.tb = tb;
+        this.name = name;
+    }
+
+    public ModuleBuilder requiresPublic(String requires, Path... modulePath) {
+        return requires("public " + requires, modulePath);
+    }
+
+    public ModuleBuilder requires(String requires, Path... modulePath) {
+        this.requires += "    requires " + requires + ";\n";
+        this.modulePath += Arrays.stream(modulePath)
+                .map(Path::toString)
+                .collect(Collectors.joining(File.pathSeparator));
+        return this;
+    }
+
+    public ModuleBuilder exportsTo(String pkg, String module) {
+        return exports(pkg + " to " + module);
+    }
+
+    public ModuleBuilder exports(String pkg) {
+        this.exports += "    exports " + pkg + ";\n";
+        return this;
+    }
+
+    public ModuleBuilder uses(String uses) {
+        this.uses += "    uses " + uses + ";\n";
+        return this;
+    }
+
+    public ModuleBuilder provides(String service, String implementation) {
+        this.provides += "    provides " + service + " with " + implementation + ";\n";
+        return this;
+    }
+
+    public ModuleBuilder classes(String... content) {
+        this.content.addAll(Arrays.asList(content));
+        return this;
+    }
+
+    public Path write(Path where) throws IOException {
+        Files.createDirectories(where);
+        List<String> sources = new ArrayList<>();
+        sources.add("module " + name + "{"
+                + requires
+                + exports
+                + uses
+                + provides
+                + "}");
+        sources.addAll(content);
+        Path moduleSrc = where.resolve(name + "/src");
+        tb.writeJavaFiles(moduleSrc, sources.toArray(new String[]{}));
+        return moduleSrc;
+    }
+
+    public void build(Path where) throws IOException {
+        Path moduleSrc = write(where);
+        new JavacTask(tb)
+                .outdir(where.resolve(name))
+                .options("-mp", modulePath)
+                .files(tb.findJavaFiles(moduleSrc))
+                .run()
+                .writeAll();
+    }
+}