Data-provider via Annotation Transformer TestNG Java

MyDataProvider.java

package selenium;

import java.io.File;

import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.testng.annotations.DataProvider;

public class MyDataProvider {

	static String[][] data;

	@DataProvider(name = "mydata")
	public static Object[][] supplyData() throws Exception {
		return getdata();

	}

	private static String[][] getdata() throws Exception {
		Workbook workbook = WorkbookFactory.create(new File("C:\\Users\\Mitturaj.h\\Desktop\\data - Copy.xls"));

		Sheet sheet = workbook.getSheetAt(0);

		int rows = sheet.getLastRowNum() + 1;
		System.out.println(rows);

		int cols = sheet.getRow(0).getLastCellNum();
		System.out.println(cols);

		data = new String[rows][cols];

		for (int x = 0; x < rows; x++) {
			for (int y = 0; y < cols; y++) {
				DataFormatter formatter = new DataFormatter();
				String user = formatter.formatCellValue(sheet.getRow(x).getCell(y));
				System.out.println(user);
				data[x][y] = user;
			}
		}
		return data;

	}

	public static void main(String[] args) throws Exception {
		getdata();
	}
}

MyListener.java

package selenium;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;

import org.testng.IAnnotationTransformer;
import org.testng.annotations.ITestAnnotation;

public class MyListener implements IAnnotationTransformer {

	public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod) {

		if (testMethod.getName().equals("method3")) {
			annotation.setPriority(0);
			annotation.setDataProviderClass(selenium.MyDataProvider.class);
			annotation.setDataProvider("mydata");

		}

	}

}

SeleniumExample.java

package selenium;

import org.testng.annotations.Test;

public class SeleniumExample {

	@Test(priority = 2)
	public void method1() {
		System.out.println("Method1");
	}

	@Test(priority = 1)
	public void method2() {
		System.out.println("Method2");
	}

	@Test(priority = 0)
	public void method3(String fname, String lname, String number) {
		System.out.println("Method3");
		System.out.println(fname + " " + lname + " " + number);
	}

}

trans-testng.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Suite" parallel="none">
<listeners>
<listener class-name="selenium.MyListener"/>
</listeners>
  <test name="Test">
    <classes>
      <class name="selenium.SeleniumExample"/>
    </classes>
  </test> <!-- Test -->
</suite> <!-- Suite -->