diff --git a/javalib/api/current.txt b/javalib/api/current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/javalib/api/current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/javalib/api/removed.txt b/javalib/api/removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/javalib/api/removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/javalib/api/system-current.txt b/javalib/api/system-current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/javalib/api/system-current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/javalib/api/system-removed.txt b/javalib/api/system-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/javalib/api/system-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/javalib/api/test-current.txt b/javalib/api/test-current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/javalib/api/test-current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/javalib/api/test-removed.txt b/javalib/api/test-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/javalib/api/test-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0