Added plugin to fix the build process. Maven thought I was using 1.3 by default.

dropwizard/pom.xml

@@ -28,6 +28,15 @@
 
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>2.3.2</version>
+                <configuration>
+                    <source>1.7</source>
+                    <target>1.7</target>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
@@ -76,4 +85,4 @@
             </plugin>
         </plugins>
     </build>
-</project>
+</project>