// To create an object of Desired Capabilities

DesiredCapabilities capabilities = new DesiredCapabilities();

// Name of mobile web browser to automate. It should be an empty string, as we are automation an app

capabilities.setCapability(CapabilityType.BROWSER_NAME, "");

// Name of the OS: Android, iOS or FirefoxOS

capabilities.setCapability("platformName", "Android");

// Mobile OS version –  My device is running Android 4.4.2

capabilities.setCapability(CapabilityType.VERSION, "4.4.2");

// Device name:  – I am using Micromax A311

capabilities.setCapability("deviceName", "Micromax A311″);

// An absolute local path to the APK file

capabilities.setCapability("app", app.getAbsolutePath());

// Java package of the tested Android app

capabilities.setCapability("appPackage", "com.taobao.taobao");

// An activity name for the Android activity you want to run from your package.

capabilities.setCapability("appActivity", "com.taobao.tao.welcome.Welcome");