Array value can not initialize with 0 in selenium webdriver/ java - selenium

Question

for loop value can not initialize with 0 in selenium webdriver/ java
String arr[] = new String[4];
for(int i = 0; i <4; i++) {
String text = driver
.findElement(By.xpath("html/body/select/option["+i+"]")).getText();
arr[i] = text;
System.out.println(arr[i]+" ");
}
This is html which i have to read all the element.
<select>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>

Answer 1

You can initialize the array with 0 but not in the scenario which you have specified.
You are finding an element with the xpath: html/body/select/option["+i+"]
where i is the position of the option element with respect to the select Element. It can never be zero.
If you want to start an array by zero then you should use the code specified below:
String arr[] = new String[4];
for(int i = 0; i <4; i++) {
String text = driver.findElements(By.xpath("html/body/select/option")).get(i).getText();
arr[i] = text;
System.out.println(arr[i]+" ");
}
Explanation: driver.findElements(By.xpath("html/body/select/option")) return the List of WebElement. You can get the element at index 0 which is supposed to be equivalent to "html/body/select/option[1]"

Answer 2

Html indexes starts from 1, not 0. The xpath should be
"html/body/select/option["+ (i + 1) +"]"
However, instead of locating the option one by one you can use Select class
WebElement dropdown = driver.findElement(By.xpath("html/body/select"));
Select select = new Select(dropdown);
List<WebElement> options = select.getOptions();
String arr[] = new String[options.size()];
for(int i = 0 ; i < options.size() ; i++) {
arr[i] = options.get(i).getText();
System.out.println(arr[i] + " ");
}