How to change the path to get screenshots to a folder named time stamp?

Support
1

iOS
Appium
java

I have taken screen shots of appium test with following script.

String path;
 try {
     WebDriver augmentedDriver = new Augmenter().augment(driver);
     File source = ((TakesScreenshot)augmentedDriver).getScreenshotAs(OutputType.FILE);
     path = "/Users/admin/Desktop/newfolder" + source.getName();
          org.apache.commons.io.FileUtils.copyFile(source, new File(path));
      }
       catch(IOException e) {
            path = "Failed to capture screenshot: " + e.getMessage();
        }

I want to take them to a folder named with timestamp.
But now I’m getting them to desktop named like this.

How to give path to a folder to save these screenshots during appium test?