Dec 27, 2013

Sony SmartWatch App Development 3

In previous two articles I covered development environment setup and anatomy of SmartWatch. This article will contain deep dive into coding with simple Hello Word example.

This demo will cover Notification API only. We will develop a single Android project named "Hello SmartWatch" which acts as a Host application and Extension application both. It means I will use single codebase for both things. Hello SmartWatch project has an Activity to send and clear notification to SmartWatch. 

I assume that you have already imported SmartExtensionAPI and SmartExtensionUtils libraries in workspace.

Let's jump to the code.

List of Classes and purpose
  • It is use to generate and clear notification.
  • It receives input event generated by SmartWatch and forward control to the Extension Service.
  • core logic of Host application needs to be written in ExtensionService. It is also responsible to register a host application to SmartWatch.
  • It provides essential information to register host application and API requirement. 

This demo application contains only above four classes but actual application may have more classes. In above classes MainActivity acts as a Smart Extension application and rest of classes acts as a Host application.

Step 1: Create new Android project in eclipse named "HelloSmartWatch".
Step 2: Let's create UI first. Open activity_main.xml and put two EditText box for Title and Message respectively and two buttons for Send and Clear notification respectively.

<LinearLayout xmlns:android=""
    tools:context=".MainActivity" >

        android:text="Send Notification"
        android:textAppearance="?android:attr/textAppearanceLarge" />

        android:hint="Title" >

        android:hint="Message" >

        android:text="Send Notification" />

        android:text="Clear Notification" />


Step 3: Let's make button alive by writing action in I am using onClick property of buttons, so I don't require to find object of button and setOnClickListener. I can write code in "buttonClicked" method which is defined. When a user click on "Send Notification" button I am simply firing ExtensionService with INTENT_ACTION_ADD action and other required data and same for "Clear Notification" but with INTENT_ACTION_CLEAR action.

package com.kpbird.hellosmartwatch;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class MainActivity extends Activity {

 protected void onCreate(Bundle savedInstanceState) {
 public void buttonClicked(View v){
  if(v.getId() =={
   Intent serviceIntent = new Intent(this, HelloExtensionService.class);
         EditText etName = (EditText) findViewById(;
         EditText etMsg = (EditText) findViewById(;
         serviceIntent.putExtra("name", etName.getText().toString());
         serviceIntent.putExtra("message", etMsg.getText().toString());
  else if(v.getId() =={
   Intent serviceIntent = new Intent(this, HelloExtensionService.class);

Step 4: Create, It extends BroadcastReceiver. It works as bridge between SmartWatch and Host application, It will receive event generated in SmartWatch and forward it to

package com.kpbird.hellosmartwatch;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class HelloExtensionReceiver  extends BroadcastReceiver{
 private String TAG = this.getClass().getSimpleName();
 public void onReceive(Context context, Intent intent) {
    Log.i(TAG, "HelloExtensionReceiver onReceiver: " + intent.getAction());
       intent.setClass(context, HelloExtensionService.class);


Step 5: Create and extends with RegistrationInformation class. As the name suggests, It will use to register host application in Smart Connect. It has six methods that we need to override, among these four methods are used to declare required APIs and two methods used for extension registration and source registration. You can have multiple sources in a host application.

package com.kpbird.hellosmartwatch;

import java.util.ArrayList;
import java.util.List;

import android.content.ContentValues;
import android.content.Context;

import com.sonyericsson.extras.liveware.aef.notification.Notification;
import com.sonyericsson.extras.liveware.aef.registration.Registration;
import com.sonyericsson.extras.liveware.extension.util.ExtensionUtils;
import com.sonyericsson.extras.liveware.extension.util.registration.RegistrationInformation;

public class HelloRegistrationInformation extends RegistrationInformation{
 private Context mContext;
 public HelloRegistrationInformation(Context ctx){
   if (ctx == null) {
             throw new IllegalArgumentException("context == null");
         mContext = ctx;
 public int getRequiredNotificationApiVersion() {
  return 1;
 public int getRequiredWidgetApiVersion() {
  return 0;

 public int getRequiredControlApiVersion() {
  return 0;

 public int getRequiredSensorApiVersion() {
  return 0;

 public ContentValues getExtensionRegistrationConfiguration() {
    String extensionIcon = ExtensionUtils.getUriString(mContext,R.drawable.ic_launcher);
        String iconHostapp = ExtensionUtils.getUriString(mContext,R.drawable.ic_launcher);
         String extensionIcon48 = ExtensionUtils.getUriString(mContext,R.drawable.ic_launcher_48);

         String configurationText = "Hello SmartWatch";
         String extensionName = "Hello SmartWatch";

         ContentValues values = new ContentValues();
         values.put(Registration.ExtensionColumns.CONFIGURATION_TEXT, configurationText);
         values.put(Registration.ExtensionColumns.EXTENSION_ICON_URI, extensionIcon);
         values.put(Registration.ExtensionColumns.EXTENSION_48PX_ICON_URI, extensionIcon48);

         values.put(Registration.ExtensionColumns.HOST_APP_ICON_URI, iconHostapp);
         values.put(Registration.ExtensionColumns.NAME, extensionName);
         values.put(Registration.ExtensionColumns.PACKAGE_NAME, mContext.getPackageName());
         return values;

 public ContentValues[] getSourceRegistrationConfigurations() {
   ContentValues sourceValues = null;

         String iconSource1 = ExtensionUtils.getUriString(mContext,R.drawable.ic_launcher_30);
         String iconSource2 = ExtensionUtils.getUriString(mContext,R.drawable.ic_launcher_18);
         String iconBw = ExtensionUtils.getUriString(mContext,R.drawable.ic_launcher_18_bw);
         String textToSpeech = "Notification from Hello SmartWatch Application";
         sourceValues = new ContentValues();
         sourceValues.put(Notification.SourceColumns.ENABLED, true);
         sourceValues.put(Notification.SourceColumns.ICON_URI_1, iconSource1);
         sourceValues.put(Notification.SourceColumns.ICON_URI_2, iconSource2);
         sourceValues.put(Notification.SourceColumns.ICON_URI_BLACK_WHITE, iconBw);
         sourceValues.put(Notification.SourceColumns.UPDATE_TIME, System.currentTimeMillis());
         sourceValues.put(Notification.SourceColumns.NAME, mContext.getString(R.string.app_name));
         sourceValues.put(Notification.SourceColumns.EXTENSION_SPECIFIC_ID, HelloExtensionService.EXTENSION_SPECIFIC_ID);
         sourceValues.put(Notification.SourceColumns.PACKAGE_NAME, mContext.getPackageName());
         sourceValues.put(Notification.SourceColumns.TEXT_TO_SPEECH, textToSpeech);
         sourceValues.put(Notification.SourceColumns.ACTION_ICON_1,ExtensionUtils.getUriString(mContext, R.drawable.ic_launcher));
  List<ContentValues> bulkValues = new ArrayList<ContentValues>();
        return bulkValues.toArray(new ContentValues[bulkValues.size()]);


Step 6: Create and extends with ExtensionService. It will contain main logic of SmartWatch host application. We need to implement two abstract methods named "getRegistrationInformation()", which sends object of HelloRegistrationInformation class and "keepRunningWhenConnected()",return true if you want to keep ExtensionService running as long as SmartWatch is connected with Smart Phone. For notification example we need to create two methods named "addData" and "clearData". It will generate and clear notification in SmartWatch respectively. We also need to implement onStartCommand to interact with Service.

package com.kpbird.hellosmartwatch;

import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.database.SQLException;
import android.util.Log;
import android.widget.Toast;

import com.sonyericsson.extras.liveware.aef.notification.Notification;
import com.sonyericsson.extras.liveware.aef.registration.Registration;
import com.sonyericsson.extras.liveware.extension.util.ExtensionService;
import com.sonyericsson.extras.liveware.extension.util.ExtensionUtils;
import com.sonyericsson.extras.liveware.extension.util.notification.NotificationUtil;
import com.sonyericsson.extras.liveware.extension.util.registration.DeviceInfoHelper;
import com.sonyericsson.extras.liveware.extension.util.registration.RegistrationInformation;

public class HelloExtensionService extends ExtensionService   {

 public static final String EXTENSION_KEY =  "com.kpbird.hellosmartwatch.key";
 public static final String INTENT_ACTION_ADD = "com.kpbird.hellosmartwatch.action.add";
 public static final String INTENT_ACTION_CLEAR = "com.kpbird.hellosmartwatch.action.clear";

 private String TAG = this.getClass().getSimpleName();
 public HelloExtensionService() {
  Log.i(TAG, "Constructor");
 public void onCreate() {
  Log.i(TAG, "onCreate()");

 public void onDestroy() {
  Log.i(TAG, "onDestroy()");
 public int onStartCommand(Intent intent, int flags, int startId) {
  int retVal = super.onStartCommand(intent, flags, startId);
  if (intent != null) {
   if (INTENT_ACTION_CLEAR.equals(intent.getAction())) {
    Log.d(TAG, "onStart action: INTENT_ACTION_CLEAR");
   } else if (INTENT_ACTION_ADD.equals(intent.getAction())) {
    Log.d(TAG, "onStart action: INTENT_ACTION_ADD");

  return retVal;

 protected RegistrationInformation getRegistrationInformation() {
  return new HelloRegistrationInformation(this);

 protected boolean keepRunningWhenConnected() {
  return false;

 private void clearData(Intent intent) {

 private void addData(Intent intent) {
  String name = "Name";
  String message = "Message";
  if (intent.getExtras().containsKey("name"))
   name = intent.getExtras().getString("name");
  if (intent.getExtras().containsKey("message"))
   message = intent.getExtras().getString("message");

  long time = System.currentTimeMillis();
  long sourceId = NotificationUtil.getSourceId(this,
  Log.i(TAG, "Source ID :" + sourceId);
  if (sourceId == NotificationUtil.INVALID_ID) {
   Log.e(TAG, "Failed to insert data");
  String profileImage = ExtensionUtils.getUriString(this,R.drawable.ic_launcher);

  ContentValues eventValues = new ContentValues();
  eventValues.put(Notification.EventColumns.EVENT_READ_STATUS, false);
  eventValues.put(Notification.EventColumns.DISPLAY_NAME, name);
  eventValues.put(Notification.EventColumns.MESSAGE, message);
  eventValues.put(Notification.EventColumns.PERSONAL, 1);
  eventValues.put(Notification.EventColumns.PUBLISHED_TIME, time);
  eventValues.put(Notification.EventColumns.SOURCE_ID, sourceId);

  try {
   getContentResolver().insert(Notification.Event.URI, eventValues);
  } catch (IllegalArgumentException e) {
   Log.e(TAG, "Failed to insert event", e);
  } catch (SecurityException e) {
     "Failed to insert event, is Live Ware Manager installed?",
  } catch (SQLException e) {
   Log.e(TAG, "Failed to insert event", e);

 protected void onViewEvent(Intent intent) {
  String action = intent.getStringExtra(Notification.Intents.EXTRA_ACTION);
  Log.i(TAG, "Action : " + action);
  String hostAppPackageName = intent.getStringExtra(Registration.Intents.EXTRA_AHA_PACKAGE_NAME);
  Log.i(TAG, "HostAppPackageName: " + hostAppPackageName);
  boolean advancedFeaturesSupported = DeviceInfoHelper.isSmartWatch2ApiAndScreenDetected(this, hostAppPackageName);
  Log.i(TAG, "Advanced Features Supported: " + advancedFeaturesSupported);
  int eventId = intent.getIntExtra(Notification.Intents.EXTRA_EVENT_ID,-1);
  try {
   Cursor cursor = getContentResolver().query(Notification.Event.URI,null, Notification.EventColumns._ID + " = " + eventId,null, null);
   if (cursor != null && cursor.moveToFirst()) {
    String name = cursor.getString(cursor.getColumnIndex(Notification.EventColumns.DISPLAY_NAME));
    String message = cursor.getString(cursor.getColumnIndex(Notification.EventColumns.MESSAGE));
    Toast.makeText(this,"Notification: Name: " + name + " Message: " + message,Toast.LENGTH_LONG).show();
    Log.i(TAG, "Name: " + name);
    Log.i(TAG, "Message: "+ message);
  } catch (Exception ex) {
 public void onRegisterResult(boolean success) {
   Log.d(TAG, "onRegisterResult :" + success);


Step 7: Finally we need to register HelloExtensionReceiver and HelloExtensionService in AndroidManifest.xml like following. We also need to provide user permission "EXTENSION_PERMISSION".

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""
    android:versionName="1.0" >

        android:targetSdkVersion="16" />
        <uses-permission android:name="com.sonyericsson.extras.liveware.aef.EXTENSION_PERMISSION" />

        android:theme="@style/AppTheme" >
            android:label="@string/app_name" >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
         <service android:name=".HelloExtensionService" />
            android:permission="com.sonyericsson.extras.liveware.aef.HOSTAPP_PERMISSION" >

                <!-- Generic extension intents. -->
                <action android:name="com.sonyericsson.extras.liveware.aef.registration.EXTENSION_REGISTER_REQUEST" />
                <action android:name="com.sonyericsson.extras.liveware.aef.registration.ACCESSORY_CONNECTION" />
                <action android:name="android.intent.action.LOCALE_CHANGED" />

                <!-- Notification intents -->
                <action android:name="com.sonyericsson.extras.liveware.aef.notification.VIEW_EVENT_DETAIL" />
                <action android:name="com.sonyericsson.extras.liveware.aef.notification.REFRESH_REQUEST" />

                <!-- Widget intents -->
                <action android:name="com.sonyericsson.extras.aef.widget.START_REFRESH_IMAGE_REQUEST" />
                <action android:name="com.sonyericsson.extras.aef.widget.STOP_REFRESH_IMAGE_REQUEST" />
                <action android:name="com.sonyericsson.extras.aef.widget.ONTOUCH" />
                <action android:name="com.sonyericsson.extras.liveware.extension.util.widget.scheduled.refresh" />

                <!-- Control intents -->
                <action android:name="com.sonyericsson.extras.aef.control.START" />
                <action android:name="com.sonyericsson.extras.aef.control.STOP" />
                <action android:name="com.sonyericsson.extras.aef.control.PAUSE" />
                <action android:name="com.sonyericsson.extras.aef.control.RESUME" />
                <action android:name="com.sonyericsson.extras.aef.control.ERROR" />
                <action android:name="com.sonyericsson.extras.aef.control.KEY_EVENT" />
                <action android:name="com.sonyericsson.extras.aef.control.TOUCH_EVENT" />
                <action android:name="com.sonyericsson.extras.aef.control.SWIPE_EVENT" />

Step 8: Connect your SmartPhone and run this example. It will display MainActivity. Before jumping to "Send Notification", open Accessory Emulator and select Extension to verify that our HelloExtension is installed or not. Click on extension menu and it will display the registration details. If extension gets registered successfully then you can go back to Hello SmartWatch application and play with Send and Clear Notification functionality.

Screen Shots

Open Accessory emulator and select SmartWatch 2, Wait for few second if Extensions and Notification API will not enable

Select Extensions

You can see extension detail

Click on "Show Extension Settings" will open this screen because at time of extension registration we provide as Setting screen

Type Notification title and message and click Send Notification

Go back to Accessory emulator and select Notification API

Select source, This will come from HelloRegistrationInformation's getSourceInformation function, It will display multiple option in the list if you have register multiple sources.

Now, you can see the notification title which we just send

click on menu button ":" will open action menu, you can add maximum 4 action, In our case we have implemented only one action

Click on action menu will call onViewEvent method in You can write any action in this method. In our example we just display Toast.

When you click on "Clear Notification" from HelloActivity and come back to emulator, you will see the effect

Note: 1. Import project in eclipse 2. Make sure that you change SmartExtensionUtils and SmartExtensionAPI path from project properties.

continue reading Sony SmartWatch App Development 3

Dec 20, 2013

Sony SmartWatch App Development 2

In previous article "Sony SmartWatch App Development", I explained basics of SmartWatch, configuration of Sony’s Add-On SDK, configuration of SmartWatch emulator and execute simple notification application. This article explains anatomy of SmartWatch development.

Sony’s Add-on SDK is unified SDK, which includes Smart Extension APIs, Small Apps API, IR Remote API and Camera Add-on API among these Smart Extension API is used for SmartWatch and Smart Wireless Handset Pro application development.

Smart Extension API has following subset for different purpose
  • Control API: It is use to render data on device, It supports Grid view, List view, menu, image rendering, touch event and key press. Older version of Control API was supporting only image rendering but current version (2.0) supports XML based layout.
  • Notification API: This can be most useful API among others. It is used to display notification in SmartWatch, which is generated in SmartPhone application. Notification API supports notification title,message, icon and colour.
  • Widget API: It is used to render widget on device.
  • Sensor API: It is used to fetch sensor data from SmartWatch. i.e. light and accelerometer.
  • Registration & Capabilities API: Registration is used to specify how many API subset your application requires ? Like I want to use only Notification API or Sensor API etc.. Capabilities API is used to fetch capability of Smart accessory, here capability means sensor, widget or other functionality, which accessory may have.
SmartWatch Extension API and Development
Source: Sony Smart Extension API documentation
There are three thing involved in SmartWatch application development.

  • Host Application: It handles all interaction with SmartWatch, It is installed as a part of Smart Connect (aka LiveWare). When you install host application from Google Play, you may not find it in launcher screen. It will be available in Smart Connect (LiveWare).
  • Smart Connect: It acts as mediator / manager / framework between Host Application and SmartWatch. SmartWatch connect with Smart Connection application using bluetooth.
  • Smart Extension Apps: It's our normal Android application, which extends to work with SmartWatch. For example Facebook, SMS, Twitter, etc.
Communication between Host Application and Smart Extension Application

Above figure shows, How host application communicate with smart extension application. Smart extension API works on Intent and ContentProvider. In coding sense there can be a single application or Android project which contains both Host application and Smart Extension but there isn't restriction to have single codebase. You can develop two different Android Project as per your requirement. My advice is to use single codebase or single Android project because it will be easier for user,when He/She will download from Google Play and You don't require to manage separate codebase.

Next article will deep dive in to the code.
continue reading Sony SmartWatch App Development 2

Dec 14, 2013

Smart Watch App Development

Introduction Smart Watch or Smartwatch

"A smartwatch or smart watch, is a computerized wristwatch with functionality that is enhanced beyond timekeeping, and is often comparable to a personal digital assistant (PDA) device. While early models can perform basic tasks, such as calculations, translations, and game-playing, modern smartwatches are effectively wearable computers. Many smartwatches run mobile apps, while a smaller number of models run a mobile operating system and function as portable media players, offering playback of FM radio, audio, and video files to the user via a Bluetooth headset. Some smartphone models, (also called watch phones) feature full mobile phone capability, and can make or answer phone calls"
-- Wikipedia

SmartWatch's exist since 1980s but it wasn't popular much because of lack in hardware/software technology and wasn't supporting eco-system. Many big companies like Google, Sony, Samsung,etc. launch SmartWatch in 2013. I believe that 2014 will be the "year of the SmartWatch".

Popular SmartWatchs

  • Sony SmartWatch
  • Samsung Galaxy Gear
  • i'm Watch
  • Pebble
  • WiMM Labs (WiMM Labs was acquired by Google in 9-Jan-2013)
Following SmartWatch allows to develop apps

In this article, I will focus on Sony SmartWatch app development. I am using iMac with OSX 10.9 for the development.

  • JDK
  • Android SDK
  • Sony Add-On SDK
  • Emulator / Android Phone
Setup Development Environment for Sony SmartWatch

Step 1: Install JDK [Ref:]
Step 2: Install Android SDK [Ref:]
Step 3: Download Sony Add-on SDK from this link
Step 4: Extract zip file and copy "sony_add-on_sdk_2_1" into <Android SDK>/add-ons/

Android SDK with Sony Add On Folder installed
Setup SmartWatch Emulator

Step 1: You can use any SmartPhone or Android Emulator for SmartWatch Emulator, In my case I am using Sony Xperia P phone. You can use any Android based Smart Phone. 
Step 2: Install Sony's Smart Connect (LiveWare) Application from Google Play

Step 3: Install "acessory_emulator.apk" from <Android SDK>/add-ons/sony_add-on_sdk_2_1/apks

Accessory Emulator and Smart Connect Installed

Compile & Install Sample Application

Step 1: Open Eclipse
Step 2: Import SmartExtensions from <Android SDK>/add-ons/samples/SmartExtensions

Right Click and Select Import
Select "Sony AddOn" folder from Android SDK
Select SmartExtension Projects
SamplePreferenceActivity app and two libraries will display as project

Step 3: Eclipse will display three projects SimplePerferenceActivity,SmartExtensionAPI and SmartExtensionUtils. SimplePerferenceActivity is our main sample application, SmartExtensionAPI and SmartExtensionUtils are library which requires to develop SmartWatch application.

Step 4: Compile & Install "SimplePerferenceActivity" in your smartphone.

Step 5: Open "Accessory Emulator" application from smartphone. It will display dialogbox with different options. Select "SmartWatch"

Step 6: Accessory Emulator will display different options but only Extensions and Widget API will be active.

Step 7: Select Widget API, It will display Sony SmartWatch Emulator with Sample Widget application.

Open Accessory Emulator, Select "SmartWatch"
Enable options based on application, Select "Widget API"
Sample Widget 


continue reading Smart Watch App Development

Nov 1, 2013

Android 4.4 KitKat API Changes

Android 4.4 API Level 19
Major Features

  • Runs on 512 MB RAM
  • New NFC capabilities through Host Card Emulation
  • Printing framework
  • Storage access framework
  • Low-power sensors
  • SMS provider
  • Full-screen Immersive mode
  • Transitions framework for animating scenes
  • Chromium WebView
  • Screen recording
  • HTTP Live Streaming
  • Audio Tunneling to DSP
  • RenderScript Compute
  • New Bluetooth profiles
  • IR Blasters
  • Security enhancements
  • Tools for analyzing memory use

API Difference
The overall difference between API Levels 18 and 19 is approximately 2.63%.

Classes and Interfaces781800258

API Difference Package Wise

continue reading Android 4.4 KitKat API Changes

Oct 24, 2013

AWS SDK for Java - Tutorial 5 : CloudFront


Amazon CloudFront is a web service for content delivery. It integrates with other Amazon Web Services to give developers and businesses an easy way to distribute content to end users with low latency, high data transfer speeds, and no commitments.


Source Code

Step 1: Variables
// Cloud Front 
    private String cloudFrontDesc = "this is description";
    private String cloudFrontS3Origin= "aws-tutorials";
    private long cloudFrontMinTTL=36000;

Step 2: Create CloudFront with S3 bucket as origin
public void createCloudFront(){
  try {
    log.Info("Create CloudFront Distribution For Download");
    AmazonCloudFrontClient cloudfront = new AmazonCloudFrontClient(credentials);

    DistributionConfig dc = new DistributionConfig();
    dc.withCallerReference(System.currentTimeMillis() + "");
    dc.withAliases(new Aliases().withQuantity(0));
    dc.withOrigins(new Origins().withItems(
      new Origin().withId(cloudFrontS3Origin).withDomainName(cloudFrontS3Origin+ "").withS3OriginConfig(new S3OriginConfig().withOriginAccessIdentity("")))
    dc.withDefaultCacheBehavior(new DefaultCacheBehavior()
      .withForwardedValues(new ForwardedValues().withQueryString(false).withCookies(new CookiePreference().withForward("none")))
      .withTrustedSigners(new TrustedSigners().withQuantity(0).withEnabled(false))
    dc.withCacheBehaviors(new CacheBehaviors().withQuantity(0));
    dc.withLogging(new LoggingConfig().withEnabled(false).withBucket("").withPrefix("").withIncludeCookies(false));

    CreateDistributionRequest cdr = new CreateDistributionRequest().withDistributionConfig(dc);

    CreateDistributionResult distribution = cloudfront.createDistribution(cdr);

    boolean isWait = true;
    while (isWait) {
     GetDistributionResult gdr = cloudfront.getDistribution(new GetDistributionRequest(distribution.getDistribution().getId()));
     String status = gdr.getDistribution().getStatus();
     log.Info("Status :" + status);
     if (status.equals("Deployed")) {
      isWait = false;
      log.Info("Domain Name :" + gdr.getDistribution().getDomainName());


  } catch (Exception e) {

Screen Shots

Source Code
continue reading AWS SDK for Java - Tutorial 5 : CloudFront

AWS SDK for Java - Tutorial 4 : S3

Amazon S3 provides a simple web services interface that can be used to store and retrieve any amount of data, at any time, from anywhere on the web. It gives any developer access to the same highly scalable, reliable, secure, fast, inexpensive infrastructure that Amazon uses to run its own global network of web sites. The service aims to maximize benefits of scale and to pass those benefits on to developers.

Useful Classe

Source Code
Step 1: Variables requires to create S3 bucket
 // S3 
 private String BucketName = "aws-tutorials";
 private String BucketPolicy ="{"Version": "2008-10-17","Statement": [{"Sid": "AddPerm","Effect": "Allow","Principal": {"AWS": "*"},"Action": "s3:GetObject","Resource": "arn:aws:s3:::aws-tutorials/*"}]}";

Step 2: Create s3 bucket with policy
public void createS3(){

  try {
   AmazonS3Client s3 = new AmazonS3Client(credentials);
   log.Info("Creating Bucket :" + BucketName);
   log.Info("Policy :" + BucketPolicy);
   s3.setBucketPolicy(BucketName, BucketPolicy);
  } catch (Exception e) {


Click here to download full source

continue reading AWS SDK for Java - Tutorial 4 : S3