screenshot in selenium code example

Example 1: python selenium screenshot

driver.save_screenshot("screenshot.png")

Example 2: how to take a screenshot in selenium

Java
Yes, it is possible. The following example is in Java:

WebDriver driver = new FirefoxDriver();
driver.get("http://www.google.com/");
File scrFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
// Now you can do whatever you need to do with it, for example copy somewhere
FileUtils.copyFile(scrFile, new File("c:\\tmp\\screenshot.png"));