diff --git a/fabcar/java/src/main/java/org/example/ClientApp.java b/fabcar/java/src/main/java/org/example/ClientApp.java
index 43fb7619..c69f52be 100755
--- a/fabcar/java/src/main/java/org/example/ClientApp.java
+++ b/fabcar/java/src/main/java/org/example/ClientApp.java
@@ -1,3 +1,7 @@
+/*
+SPDX-License-Identifier: Apache-2.0
+*/
+
 package org.example;
 
 import java.nio.file.Path;
diff --git a/fabcar/java/src/main/java/org/example/EnrollAdmin.java b/fabcar/java/src/main/java/org/example/EnrollAdmin.java
index a5b2fa04..4d4db122 100644
--- a/fabcar/java/src/main/java/org/example/EnrollAdmin.java
+++ b/fabcar/java/src/main/java/org/example/EnrollAdmin.java
@@ -1,3 +1,7 @@
+/*
+SPDX-License-Identifier: Apache-2.0
+*/
+
 package org.example;
 
 import java.nio.file.Paths;
diff --git a/fabcar/java/src/main/java/org/example/RegisterUser.java b/fabcar/java/src/main/java/org/example/RegisterUser.java
index 0055dfac..d972a01b 100644
--- a/fabcar/java/src/main/java/org/example/RegisterUser.java
+++ b/fabcar/java/src/main/java/org/example/RegisterUser.java
@@ -1,3 +1,7 @@
+/*
+SPDX-License-Identifier: Apache-2.0
+*/
+
 package org.example;
 
 import java.nio.file.Paths;
diff --git a/fabcar/java/src/test/java/org/example/ClientTest.java b/fabcar/java/src/test/java/org/example/ClientTest.java
index 3acfe1b7..4bf2d838 100644
--- a/fabcar/java/src/test/java/org/example/ClientTest.java
+++ b/fabcar/java/src/test/java/org/example/ClientTest.java
@@ -1,3 +1,7 @@
+/*
+SPDX-License-Identifier: Apache-2.0
+*/
+
 package org.example;
 
 import org.junit.Test;