Thundersnow formation with an occluded front. Thundersnow, also known as a winter thunderstorm or a thundersnowstorm, is an unusual kind of thunderstorm with snow falling as the primary precipitation instead of rain. It typically falls in regions of strong upward motion within the cold sector of an extratropical cyclone.
In Java, any method can call System.exit(int status), unless a security manager does not permit it. This will terminate the currently running Java Virtual Machine. The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination..
ListIterator in Java is an Iterator which allows user to traverse Collection like ArrayList and HashSet in both direction by using method previous() and next (). You can obtain ListIterator from all List implementation including ArrayList and LinkedList.