what is the difference between cssSelector and ByCssSelector in selenium

Question

what is the difference between By.cssSelector and By.ByCssSelector in the below code.

driver.findElement(By.cssSelector("test")).click(); driver.findElement(By.ByCssSelector.id("")).click();

Answer 1

cssSelector - static method of By Class.

ByCssSelector - static inner class of By Class.

cssSelector method internally creates ByCssSelector class.

Hence

driver.findElement(By.cssSelector("test")).click();

can be written as

driver.findElement(new By.ByCssSelector("test")).click();

Both are same.

Update:

driver.findElement(By.ByCssSelector.id("test")).click();

Above statement is invalid since

• findElement expects By object and new keyword is missing.

• We have to pass css selector value when calling ByCssSelector since it has
  parameterized constructor which takes cssselector value.

• ByCssSelector inner class doesn't have id method to invoke.