MasterTest ::






import io.appium.java_client.android.AndroidDriver;
import io.appium.java_client.android.AndroidElement;
import io.appium.java_client.remote.AndroidMobileCapabilityType;
import io.appium.java_client.remote.MobileCapabilityType;
import io.appium.java_client.service.local.AppiumDriverLocalService;
import io.appium.java_client.service.local.AppiumServiceBuilder;
import io.appium.java_client.service.local.flags.GeneralServerFlag;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.testng.annotations.*;


import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.HashMap;
import java.util.Properties;
import java.util.concurrent.TimeUnit;


public class MasterTest2<appiumDriver> {


    public static AppiumDriverLocalService service;
    public static AppiumServiceBuilder builder;
    public static AndroidDriver<AndroidElement> appiumDriver;




    @AfterMethod
    public void teardown(){
        if( appiumDriver!=null){
            System.out.println("Driver is till open "+appiumDriver);
            appiumDriver.quit();
            System.out.println("Driver is successfully closed");
        }
    }
@BeforeTest
    public AppiumDriverLocalService startServer() throws IOException {
        builder  =new AppiumServiceBuilder();
        builder.withIPAddress("127.0.0.0");
        builder.usingPort(4723);
       // builder.withCapabilities(Capabilities("deviceconfig"));
        builder.withArgument(GeneralServerFlag.SESSION_OVERRIDE);
        builder.withArgument(GeneralServerFlag.LOG_LEVEL,"debug");
        HashMap<String, String> environment = new HashMap<String, String>();
        service=AppiumDriverLocalService.buildService(new AppiumServiceBuilder().usingDriverExecutable(new File("/usr/local/bin/node"))
                .withAppiumJS(new File("/usr/local/lib/node_modules/appium/build/lib/main.js"))
                .withLogFile(new File(System.getProperty("user.dir") + "//Logs//Appium.log")));
        service.start();


        System.out.println("Appium Server started");
        return service;


    }
    @AfterTest


    public void stopServer() {
        service.stop();
        System.out.println("Appium server is stopped.");
    }








@Parameters("deviceconfig")
    public static DesiredCapabilities Capabilities(String deviceconfig) throws IOException


    {
        FileInputStream fis = new FileInputStream(System.getProperty("user.dir") + "/src/main/java/tests/com/marrow/master/global.properties");
        Properties prop = new Properties();
        prop.load(fis);
        File appDir = new File("src");
        File app = new File(appDir, (String) prop.getProperty("androidapp"));
        DesiredCapabilities Capabilities = new DesiredCapabilities();
        Capabilities.setCapability("platformName",prop.getProperty(deviceconfig +".platformName"));
        Capabilities.setCapability("platformVersion",prop.getProperty(deviceconfig +".platformVersion"));
        Capabilities.setCapability("deviceName",prop.getProperty(deviceconfig +".deviceName"));
        Capabilities.setCapability("autoGrantPermissions", "true");
       // Capabilities.setCapability("app", prop.getProperty(deviceconfig +".androidapp"));
        Capabilities.setCapability("systemPort", prop.getProperty(deviceconfig +".port"));
        Capabilities.setCapability(MobileCapabilityType.UDID, prop.getProperty(deviceconfig +".udid"));
        Capabilities.setCapability("appPackage", "com.marrow.debug");
        Capabilities.setCapability(MobileCapabilityType.AUTOMATION_NAME, "UiAutomator2");
        Capabilities.setCapability("appActivity", "com.marrow.ui.activities.onboarding.splash.SplashActivity");
        Capabilities.setCapability("noReset", "true");
        Capabilities.setCapability(MobileCapabilityType.APP, app.getAbsolutePath());
        appiumDriver = new AndroidDriver<AndroidElement>(new URL("http://127.0.0.1:4723/wd/hub"), Capabilities);
        appiumDriver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);


        return Capabilities;
    }


}














Global.properties

androidapp=app-debug-10.13new.apk
//device=Galaxy A71
device=Pixel_XL
//device=Galaxy_Nexus_API_29


device1.platformName=Android
device1.platformVersion=12.0
device1.udid=emulator-5554
device1.androidapp=app-debug-10.13new.apk
device1.port=8201
device1.deviceName=Pixel_XL1


device2.platformName=Android
device2.platformVersion=13.1
device2.udid=emulator-5556
device2.androidapp=app-debug-10.13new.apk
device2.port=8202
device2.deviceName=Pixel_4




Testng file


<?xml version="1.0" encoding="UTF-8"?>
<!-- testng.xml -->


<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="AppiumTestSuite" parallel="tests" thread-count="3">
    <test name="AuthTest">
        <parameter name="deviceconfig" value="device1" />
        <classes>
            <class name="AuthTest"/>
        </classes>
    </test>
    <test name="Email">
        <parameter name="deviceconfig" value="device2" />
        <classes>
            <class name="emailsupportTest" />
        </classes>
    </test>
</suite>




Testcase

public class emailsupportTest extends MasterTest2{
    @Test
    public void emailsupport() throws IOException {
        DesiredCapabilities driver=Capabilities("device2");
        Map<String,Object> map = new HashMap<>();
        map.put(KEY_QUERIES,4);
        GenericUiUtility.genericUiUtility("emailsupport",map);


    }
}