Use Excel to automate Selenium test in Apache POI - selenium

Question

I am a complete beginner in Selenium and I am not able to automate the Selenium code below. I have tried numerous methods but I am still getting issues with automating the run from getting the data from excel. I have even tried using the TestNG method as well but no luck I am stuck on this part not. Can someone help on how to automate this code without changing the row numbers in this step for (int i= 1; i<=noOfRows ; i++).
The code used:
public static void main(String[] args) throws IOException, InterruptedException {
System.setProperty("driver location");
WebDriver driver = new FirefoxDriver();
driver.get("link");
FileInputStream file = new FileInputStream("xcel file location");
XSSFWorkbook workbook = new XSSFWorkbook(file);
XSSFSheet sheet= workbook.getSheet("SO Reg");
int noOfRows = sheet.getLastRowNum(); // returns the row count
System.out.println("No. of Records in the Excel Sheet:" + noOfRows);
int cols=sheet.getRow(1).getLastCellNum();
System.out.println("No. of Records in the Excel Sheet:" + cols);
for (int i= 1; i<=6; i++)
{
String SO_Name = row.getCell(0).getStringCellValue();
String Contact_Person = row.getCell(1).getStringCellValue();
String Address_1 = row.getCell(2).getStringCellValue();
String Address_2 = row.getCell(3).getStringCellValue();
String City = row.getCell(4).getStringCellValue();
String State = row.getCell(5).getStringCellValue();
String ZipCode = row.getCell(6).getStringCellValue();
String Phone_Number = row.getCell(8).getStringCellValue();
String Username = row.getCell(9).getStringCellValue();
String Email = row.getCell(10).getStringCellValue();
String Re_Type_Email = row.getCell(11).getStringCellValue();
//Registration Process
driver.findElement(By.cssSelector("p.text-white:nth-child(4) > a:nth-child(1)")).click(); //create an account
Thread.sleep(5000);
//Enter Data information
driver.findElement(By.id("SOName")).sendKeys(SO_Name);
driver.findElement(By.xpath("//*[#id=\"ContactPerson\"]")).sendKeys(Contact_Person);
driver.findElement(By.xpath("//*[#id=\"AddressLine1\"]")).sendKeys(Address_1);
driver.findElement(By.xpath("//*[#id=\"AddressLine2\"]")).sendKeys(Address_2);
driver.findElement(By.id("City")).sendKeys(City);
driver.findElement(By.id("State")).sendKeys(State);
driver.findElement(By.id("ZipCode")).sendKeys(ZipCode);
driver.findElement(By.id("Phone")).sendKeys(Phone_Number);
driver.findElement(By.xpath("//*[#id=\"UserName\"]")).sendKeys(Username);
driver.findElement(By.xpath("//*[#id=\"Email\"]")).sendKeys(Email);
driver.findElement(By.xpath("//*[#id=\"RandText\"]")).sendKeys(Re_Type_Email);
driver.findElement(By.id("ConfirmBox")).click();
driver.findElement(By.xpath("/html/body/app-root/app-soregistration/div[2]/div/div/div/div/form[2]/div/div[12]/div/button[1]")).click();
driver.findElement(By.cssSelector(".btn-green-text-black")).click(); //finish button
driver.findElement(By.cssSelector("p.text-white:nth-child(4) > a:nth-child(1)")).click(); //create an account
Thread.sleep(5000);
}
}
}
}
java
selenium
automation
katalon-studio