import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;

public final class PrintScreenTest
{

public static void main(String[] args)
{
long startTime = System.currentTimeMillis();

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
clipboard.getContents(null);

//After PrintScreen key pressed, cost time is about 20 seconds.
System.out.println("cost time="+(System.currentTimeMillis()-startTime));
}

}