Appium Android hello world

The following java program starts appium and loads the given app app-debug.apk

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;

import org.openqa.selenium.WebElement;
import org.openqa.selenium.remote.DesiredCapabilities;

import io.appium.java_client.AppiumDriver;
import io.appium.java_client.android.AndroidDriver;

public class AndroidAppiumHelloWorld {
	private static AppiumDriver<WebElement> driver;

	public static void main(String[] args) throws MalformedURLException, InterruptedException {
		File appDir = new File("/path/to/directory");
		File app = new File(appDir, "app-debug.apk");
		DesiredCapabilities capabilities = new DesiredCapabilities();
		capabilities.setCapability("deviceName", "Nexus_6P_API_23");
		capabilities.setCapability("platformVersion", "6.0");
		capabilities.setCapability("app", app.getAbsolutePath());
		capabilities.setCapability("appPackage", "com.testapp");
		capabilities.setCapability("appActivity", ".MainActivity");
		driver = new AndroidDriver<>(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
		
		Thread.sleep(10 * 60 * 1000);
	}
}