Help me get started on AWS Java. NoClassDefFoundError error

I am running a snippet to list all S3 buckets using a Lambda function. package [login to view URL]; import [login to view URL]; import [login to view URL]; import [login to view URL]; import [login to view URL]; import [login to view URL]; public class HelloS3 { public String handleRequest(Context context) { final AmazonS3 s3 = [login to view URL](); List<Bucket> buckets = [login to view URL](); [login to view URL]("Your Amazon S3 buckets are:"); for (Bucket b : buckets) { [login to view URL]("* " + [login to view URL]()); } return [login to view URL]("HELLO MOM!!!"); } } My [login to view URL] is as follows: <project xmlns="[login to view URL]" xmlns:xsi="[login to view URL]" xsi:schemaLocation="[login to view URL] [login to view URL]"> <modelVersion>4.0.0</modelVersion> <groupId>[login to view URL]</groupId> <artifactId>HelloS3</artifactId> <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <name>HelloS3</name> <url>[login to view URL]</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>[login to view URL]</groupId> <artifactId>aws-lambda-java-core</artifactId> <version>1.1.0</version> </dependency> <dependency> <groupId>[login to view URL]</groupId> <artifactId>aws-java-sdk</artifactId> <version>1.11.189</version> </dependency> </dependencies> <build> <finalName>IWFHelloWorld</finalName> </build> </project> When upload onto Lambda, I get the following error... { "errorMessage": "com/amazonaws/services/s3/AmazonS3ClientBuilder", "errorType": "[login to view URL]", "stackTrace": [ "[login to view URL]([login to view URL])", "[login to view URL](Native Method)", "[login to view URL] ([login to view URL])", "[login to view URL] ([login to view URL])", "[login to view URL]([login to view URL])" ], "cause": { "errorMessage": "[login to view URL]", "errorType": "[login to view URL]", "stackTrace": [ "[login to view URL]([login to view URL])", "[login to view URL]([login to view URL])", "[login to view URL]([login to view URL])", "[login to view URL]([login to view URL])", "[login to view URL](Native Method)", "[login to view URL] ([login to view URL])", "[login to view URL] ([login to view URL])", "[login to view URL]([login to view URL])" ] } }