**Prerequisites:** install the latest version of [Java](http//java.com) and [Maven](http://maven.apache.org/download.html). You must also be able to work with qcGitHub repository (see e.g.,

https://help.github.com/articles/set-up-git).

You may need to set your `JAVA_HOME`.

cd [someDirectory]

2. Update key.p12 file.

3. Edit `StorageServiceAccountSample.java` to add your bucket and service account email.

4. Compile and run

mvn -q exec:java

**Prerequisites:** install [Eclipse](http://www.eclipse.org/downloads/), the [Maven plugin](http://m2eclipse.sonatype.org/installing-m2eclipse.html), and optionally the

[GitHub plugin](http://eclipse.github.com/).

* Edit `StorageServiceAccountSample.java` and specify your SERVICE_ACCOUNT_EMAIL and

BUCKET_NAME.

* Update the key.p12 file.

<version>v1beta2-rev43-1.18.0-rc</version>

<groupId>com.google.guava</groupId>

<artifactId>guava</artifactId>

<version>16.0.1</version>

<project.http.version>1.17.0-rc</project.http.version>

import java.io.File;

/** E-mail address of the service account. */

private static final String SERVICE_ACCOUNT_EMAIL = "[[INSERT_SERVICE_ACCOUNT_EMAIL_HERE]]";

/** Bucket to list. */

private static final String BUCKET_NAME = "[[INSERT_YOUR_BUCKET_NAME_HERE]]";

/** Global instance of the JSON factory. */

private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();

try {

httpTransport = GoogleNetHttpTransport.newTrustedTransport();

// Check for valid setup.

Preconditions.checkArgument(!SERVICE_ACCOUNT_EMAIL.startsWith("[["),

"Please enter your service account e-mail from the Google APIs "

+ "Console to the SERVICE_ACCOUNT_EMAIL constant in %s",

StorageServiceAccountSample.class.getName());

Preconditions.checkArgument(!BUCKET_NAME.startsWith("[["),

"Please enter your desired Google Cloud Storage bucket name "

+ "to the BUCKET_NAME constant in %s", StorageServiceAccountSample.class.getName());

String p12Content = Files.readFirstLine(new File("key.p12"), Charset.defaultCharset());

Preconditions.checkArgument(!p12Content.startsWith("Please"), p12Content);

//[START snippet]

// Build a service account credential.

GoogleCredential credential = new GoogleCredential.Builder().setTransport(httpTransport)

.setJsonFactory(JSON_FACTORY)

.setServiceAccountId(SERVICE_ACCOUNT_EMAIL)

.setServiceAccountScopes(Collections.singleton(STORAGE_SCOPE))

.setServiceAccountPrivateKeyFromP12File(new File("key.p12"))

.build();

// Set up and execute a Google Cloud Storage request.

String URI = "https://storage.googleapis.com/" + BUCKET_NAME;

HttpRequestFactory requestFactory = httpTransport.createRequestFactory(credential);

GenericUrl url = new GenericUrl(URI);

HttpRequest request = requestFactory.buildGetRequest(url);

HttpResponse response = request.execute();

String content = response.parseAsString();

//[END snippet]

// Instantiate transformer input.

Source xmlInput = new StreamSource(new StringReader(content));

StreamResult xmlOutput = new StreamResult(new StringWriter());

// Configure transformer.

Transformer transformer = TransformerFactory.newInstance().newTransformer(); // An identity

// transformer

transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, "testing.dtd");

transformer.setOutputProperty(OutputKeys.INDENT, "yes");

transformer.setOutputProperty(OutputKeys.INDENT, "yes");

transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

transformer.transform(xmlInput, xmlOutput);

// Pretty print the output XML.

System.out.println("\nBucket listing for " + BUCKET_NAME + ":\n");

System.out.println(xmlOutput.getWriter().toString());

System.exit(0);

} catch (IOException e) {

}