final String TAG = "Hello-CouchBase";
        Log.d(TAG, "Begin app");

        // create a manager
        Manager manager;
        try{
            manager = new Manager(new AndroidContext(this), Manager.DEFAULT_OPTIONS);
            Log.d(TAG, "Manager created");
        }catch (IOException e){
            Log.e(TAG, "Cannot create Manager object");
            return;
        }

        // create a name for the database and make sure the name is legal
        String dbname = "hello";
        if(!Manager.isValidDatabaseName(dbname)){
            Log.e(TAG, "Bad database name");
            return;
        }

        // create a new database
        Database database;
        try {
            database = manager.getDatabase(dbname);
            Log.d(TAG, "Database created");
        }catch (CouchbaseLiteException e){
            Log.e(TAG, "Cannot get database");
            return;
        }

        // get the current date and time
        SimpleDateFormat dataFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
        Calendar calendar = GregorianCalendar.getInstance();
        String currentTimeString = dataFormatter.format(calendar.getTime());
        // create an object that contains data for a document
        Map<String, Object> docContent = new HashMap<String, Object>();
        docContent.put("message", "Hello Couchbase Lite");
        docContent.put("creationDate", currentTimeString);
        // display the data for the new document
        Log.d(TAG, "docContent =" + String.valueOf(docContent));
        // create an empty document
        Document document = database.createDocument();
        // add content to document and write the document to the database
        try {
            document.putProperties(docContent);
            Log.d(TAG, "Document written to database named " + dbname + " with ID = " + document.getId());
        } catch (CouchbaseLiteException e){
            Log.e(TAG, "Cannot write document to database", e);
        }
        // save the ID of the new document
        String docID = document.getId();

        // retrieve the document from the database
        Document retrievedDocument = database.getDocument(docID);
        // display the retrieved document
        Log.d(TAG, "retrievedDocument=" + String.valueOf(retrievedDocument.getProperties()));


        // update the document
        Map<String, Object> updatedProperties = new HashMap<String, Object>();
        updatedProperties.putAll(retrievedDocument.getProperties());
        updatedProperties.put("message", "We're having a heat wave!");
        updatedProperties.put("temperature", "95");
        try {
            retrievedDocument.putProperties(updatedProperties);
            Log.d(TAG, "updated retrievedDocument=" + String.valueOf(retrievedDocument.getProperties()));
        }catch (CouchbaseLiteException e){
            Log.e(TAG, "Cannot update document", e);
        }

        // delete the document
        try {
            retrievedDocument.delete();
            Log.d(TAG, "Deleted document, deletion status = " + retrievedDocument.isDeleted());
        }catch (CouchbaseLiteException e){
            Log.e(TAG, "Cannot delete document", e);
        }

        Log.d(TAG, "End app");