How to check whether checkbox is selected or not

WebDriver driver=new FirefoxDriver();

driver.get("http://www.ksrtc.in/oprs-web/");

WebElement chkbox=driver.findElement(By.name("singleLady"));

boolean selected=chkbox.isSelected();

if(selected==true){

System.out.print("Selected");

}else{

System.out.print("not selected");

box.click();

}