diff --git a/.gitignore b/.gitignore
index edc8777b..ac513996 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /target
 dependency-reduced-pom.xml
+*.txt
diff --git a/pom.xml b/pom.xml
index 70c841a4..6e001d99 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,9 @@
     <!-- tag::joda[] -->
      <properties>
            <java.version>1.8</java.version>
-     </properties>
+           <maven.compiler.source>1.6</maven.compiler.source>
+           <maven.compiler.target>1.6</maven.compiler.target>
+    </properties>
 
       <dependencies>
            <dependency>
@@ -37,7 +39,7 @@
                             <transformers>
                                 <transformer
                                     implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-                                    <mainClass>hello.HelloWorld</mainClass>
+                                    <mainClass>hello.HelloWorld1</mainClass>
                                 </transformer>
                             </transformers>
                         </configuration>
diff --git a/test.txt b/test.txt
new file mode 100644
index 00000000..ccbb99e6
--- /dev/null
+++ b/test.txt
@@ -0,0 +1,3 @@
+This is a test file
+added 2nd line
+added 3rd line
\ No newline at end of file