How to 'click' a radio button -> xPath needed - selenium

Question

I need to check one of three radio buttons. I tried this code:
//input[#type='radio']/following-sibling::*[contains(., 'Inne akcje')]
but I think it's wrong way.
<label class="HoldersInLineLabel">Rodzaj akcji</label>
<input type="radio" ng-model="holdersModel.OperationType" class="prettifiedIeCheckbox ng-valid ng-dirty" value="P" name="01H">
"Przekazanie"
<input type="radio" ng-model="holdersModel.OperationType" value="D" class="prettifiedIeCheckbox ng-valid ng-dirty" name="01I">
"Dekretacja"
<input type="radio" ng-model="holdersModel.OperationType" value="O" class="prettifiedIeCheckbox ng-valid ng-dirty" name="01J">
"Inne akcje"
<span class="k-widget k-dropdown k-header ng-pristine ng-valid" unselectable="on" role="listbox" aria-haspopup="true" aria-expanded="false"...></span>

Answer 1

The following XPath expression will get just the input element you want:
//input[#type='radio'][following-sibling::text()[position()=1][contains(., 'Inne akcje')]]
That returns this element:
<input type="radio" ng-model="holdersModel.OperationType" value="O"
class="prettifiedIeCheckbox ng-valid ng-dirty" name="01J" />
The key differences from your original XPath expression are:
Don’t use the syntax input[#type='radio']/following-sibling…; instead use //input[#type='radio'][following-sibling….
Don’t use following-sibling::*; instead use following-sibling::text() (because in this context * means “any element“; so if you want that text node instead, you have to explicitly indicate it by using text() instead)
Do use [position()=1] in following-sibling::*[position()=1] to indicate that you want the first following sibling.

Answer 2

Xpath seems to get more complicated and would be hard to maintain in long term in this case. Names seem to be unique for these radio buttons. Are they not static? If they are, then you can just use name as selector. If you really want to use xpath, then try something concise like
.//input[contains(#name, '01J') and text() = 'Inne akcje']

Answer 3

I agree with nilesh about XPath. Here's how I would do this using CSS Selectors.
WebElement przekazanie = driver.findElement(By.cssSelector("input[value='P']"));
WebElement dekretacja = driver.findElement(By.cssSelector("input[value='D']"));
WebElement inneAkcje = driver.findElement(By.cssSelector("input[value='O']"));
// pick the one you want to click and .click() it
przekazanie.click();