How do you tell if a checkbox is selected in Selenium for Java?

I am using Selenium in Java to test the checking of a checkbox in a webapp. Here's the code:

private boolean isChecked;
private WebElement e;

I declare e and assign it to the area where the checkbox is.

isChecked = e.findElement(By.tagName("input")).getAttribute("checked").equals("true");

What is weird is that getAttribute("checked") returns null and therefore a NullPointerException

In the HTML for the checkbox, there is no checked attribute displayed. However, isn't it the case that all input elements have a checked = "true" so this code should work?

If you are using Webdriver then the item you are looking for is Selected.

Often times in the render of the checkbox doesn't actually apply the attribute checked unless specified.

So what you would look for in Selenium Webdriver is this

isChecked = e.findElement(By.tagName("input")).Selected;

As there is no Selected in WebDriver Java API, the above code should be as follows:

isChecked = e.findElement(By.tagName("input")).isSelected();

if ( !driver.findElement(By.id("idOfTheElement")).isSelected() )
{
     driver.findElement(By.id("idOfTheElement")).click();
}

 if(checkBox.getAttribute("checked") != null) // if Checked 
    checkBox.click();                         //to Uncheck it 

You can also add an and statement to be sure if checked is true.

I would do it with cssSelector:

// for all checked checkboxes
driver.findElements(By.cssSelector("input:checked[type='checkbox']"));
// for all notchecked checkboxes
driver.findElements(By.cssSelector("input:not(:checked)[type='checkbox']"));

Maybe that also helps ;-)

For the event where there are multiple check-boxes from which you'd like to select/deselect only a few, the following work with the Chrome Driver (somehow failed for IE Driver):

NOTE: My check-boxes didn't have an ID associated with them, which would be the best way to identify them according to the Documentation. Note the ! sign at the beginning of the statement.

if(!driver.findElement(By.xpath("//input[@type='checkbox' and @name='<name>']")).isSelected()) 
{
  driver.findElement(By.xpath("//input[@type='checkbox' and @name= '<name>']")).click();
}

1. Declare a variable.
2. Store the checked property for the radio button.
3. Have a if condition.

Lets assume

private string isChecked; 
private webElement e; 
isChecked =e.findElement(By.tagName("input")).getAttribute("checked");
if(isChecked=="true")
{

}
else 
{

}

Hope this answer will be help for you. Let me know, if have any clarification in CSharp Selenium web driver.

public boolean getcheckboxvalue(String element)
	{ 	
        WebElement webElement=driver.findElement(By.xpath(element));
		return webElement.isSelected();
	}

The mechanism of selenium framework:

Here selenium make request to the its server and fetch first subelement with tagname input

WebElement e = e.findElement(By.tagName("input"));

Than you try to receive attribute on that element

object attribute = e.getAttribute("checked")

So either use

findElement(By.attribute("checked")

or use

findElement(By.xpath("\\input[@checked='true']")

P.S. I'm not familiar with java's equivalent of selenium api so some method may be named slightly different.