diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f91488a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+java-example/target/
diff --git a/java-example/pom.xml b/java-example/pom.xml
index 3331fa0..a3b7573 100644
--- a/java-example/pom.xml
+++ b/java-example/pom.xml
@@ -22,6 +22,15 @@
           <mainClass>StorageSample</mainClass>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.3</version>
+        <configuration>
+          <source>1.5</source>
+          <target>1.5</target>
+        </configuration>
+      </plugin>
     </plugins>
     <finalName>${project.artifactId}-${project.version}</finalName>
   </build>