OJ (aka OpenJava) modernization/mirroring

Signed-off-by: Kenny Ballou <kballou@devnulllabs.io>

1 files changed, 8 insertions, 0 deletions

diff --git a/tutorial/examples/mixin/Undo.java b/tutorial/examples/mixin/Undo.java
new file mode 100644
index 0000000..a7f6bfb
--- /dev/null
+++ b/tutorial/examples/mixin/Undo.java
@@ -0,0 +1,8 @@
+package examples.mixin;
+
+
+public interface Undo
+{
+    public void setText(String s);
+    public void undo();
+}