Add xy tool for opening Java code

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>

diff --git a/xy b/xy
new file mode 100755 (executable)
index 0000000..f47b92e
--- /dev/null
+++ b/xy
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+find . -noleaf -xdev -name '*.java' | grep $@ | xx