Automatically executes code when the "Java"--java or Java Web virtual machine is stopped (there is always some code that needs to be performed when the virtual machine stops) __HTML5

This scenario typically shuts down the virtual machine and waits for some tasks to be completed before they are closed.

If the virtual machine was kill-9 forced to kill, then the invalid.

See Code:

Runtime.getruntime (). Addshutdownhook (New Thread () {public

            void run () {
                try {
                    logger.info ("# # Clear some Dongdong");
                    The business to execute
                catch (Throwable e) {
                    logger.warn ("# #清理失败了:", e);
                } finally {
                    logger.info ("# # ended.");}}

        );