Add rules_java/WORKSPACE file.

PiperOrigin-RevId: 252769370
Change-Id: I2ed81ffc3d6e90a7ba77a9ec72b50e31c92d3696

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
new file mode 100644
index 0000000..186cacc
--- /dev/null
+++ b/WORKSPACE
@@ -0,0 +1 @@
+# Empty WORKSPACE file.