How to take data from external source like excel

WebDriver driver=new FirefoxDriver();

driver.get("https://www.facebook.com/");
WebElement username=driver.findElement(By.id("email"));
FileInputStream fis=new FileInputSteam("D:\\testsdata.xlsx");
WorkBook wb=WorkBoolFactory.create(fis);
Sheet s=wb.getSheet("sample");

Row r=s.getRow(2);

Cell c=r.getCell(0);

String v=c.getStringCellValue();

usernametxtbox.senkeys(v);

WebElement pwdtxtbox=driver.findElement(By.id("pass"));

Row r=s.getRow(3);

Cell c=r.getCell(1);

String v1=c.getStringCellValue();

pwdtxtbox.senkeys(v1);

}