1 files changed, 27 insertions, 0 deletions
diff --git a/src/tools/android/java/com/google/devtools/build/android/desugar/io/ThrowingClassLoader.java b/src/tools/android/java/com/google/devtools/build/android/desugar/io/ThrowingClassLoader.java
new file mode 100644
index 0000000000..16f83f22e4
--- /dev/null
+++ b/src/tools/android/java/com/google/devtools/build/android/desugar/io/ThrowingClassLoader.java
@@ -0,0 +1,27 @@
+// Copyright 2016 The Bazel Authors. All rights reserved.
+//
+// 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.
+package com.google.devtools.build.android.desugar.io;
+
+/** Class loader that throws whenever it can, for use the parent of a class loader hierarchy. */
+public class ThrowingClassLoader extends ClassLoader {
+  @Override
+  protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
+    if (name.startsWith("java.")) {
+      // Use system class loader for java. classes, since ClassLoader.defineClass gets
+      // grumpy when those don't come from the standard place.
+      return super.loadClass(name, resolve);
+    }
+    throw new ClassNotFoundException();
+  }
+}
+\ No newline at end of file