Appium_Java code(1)

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;


public class AndroidExample {
WebDriver driver = null;
    
    @Before
     public void setup() throws MalformedURLException {
            File appDir = new File("C:\\Users\\NZIA\\android_sdk\\sdk\\tools\\apps\\SdkController\\bin");
File app = new File(appDir, "SdkControllerApp.apk");
DesiredCapabilities capabilities = new DesiredCapabilities();
capabilities.setCapability("device","Android");
capabilities.setCapability(CapabilityType.BROWSER_NAME, "");
capabilities.setCapability(CapabilityType.VERSION, "4.4");
capabilities.setCapability(CapabilityType.PLATFORM, "WINDOWS");
            // Here we mention the app's package name, to find the package name we  have to convert .apk file into java class files
capabilities.setCapability("app-package","com.android.tools.sdkcontroller.activities");
            //Here we mention the activity name, which is invoked initially as app's first page.
capabilities.setCapability("app-activity","MainActivity");
//capabilities.setCapability("app-wait-activity","LoginActivity,NewAccountActivity");
capabilities.setCapability("app", app.getAbsolutePath());

driver = new RemoteWebDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
driver.manage().timeouts().implicitlyWait(80, TimeUnit.SECONDS);  

     }

   @Test
public void loginTest() throws Exception {

driver.findElement(By.xpath("//EditText[@text='Email Address']")).sendKeys("[e-mail]");
driver.findElement(By.xpath("//LinearLayout/EditText[2]")).sendKeys("Testerpwd");
driver.findElement(By.xpath("//CheckBox")).click();
driver.findElement(By.xpath("//Button[@text='Login']")).click();

WebDriverWait wait = new WebDriverWait(driver,80);
wait.until(ExpectedConditions.presenceOfElementLocated(By.xpath("//Button[@text='Logout']")));  
driver.findElement(By.xpath("//Button[@text='Logout']")).click(); 

    }

   @After
    public void tearDown() {
           driver.quit();
    }


}