diff --git a/java/openjdk7/pkg-message b/java/openjdk7/pkg-message
new file mode 100644
index 000000000000..9abb673c0b22
--- /dev/null
+++ b/java/openjdk7/pkg-message
@@ -0,0 +1,16 @@
+======================================================================
+
+This OpenJDK implementation requires fdescfs(5) mounted on /dev/fd and
+procfs(5) mounted on /proc for some functionality.
+
+If you have not done it yet, please do the following:
+
+	mount -t fdescfs fdesc /dev/fd
+	mount -t procfs proc /proc
+
+To make it permanent, you need the following lines in /etc/fstab:
+
+	fdesc	/dev/fd		fdescfs		rw	0	0
+	proc	/proc		procfs		rw	0	0
+
+======================================================================