Package org.digidoc4j

Class ShutdownHook

java.lang.Object

java.lang.Thread

org.digidoc4j.ShutdownHook

All Implemented Interfaces:

Runnable

public class ShutdownHook
extends Thread

Shutdown hook for a clean shutdown

There's a good chance that some non-daemon threads handled by some sort of ExecutorService are preventing JVM from a clean shutdown.

How to use it exactly depends on the situation.

For example when dealing a simple Java "main" program, which has only a single context then registering this hook by Runtime.addShutdownHook(Thread) should be sufficient.

In case of some sort of webapp in a servlet container where there are multiple levels of contexts the recommended way to use it is to register a

invalid reference

jakarta.servlet.ServletContextListener

and call run() method inside

invalid reference

jakarta.servlet.ServletContextListener#contextDestroyed(ServletContextEvent)

NB! As the usage method of this hook is dependant on the system/situation and may vary, so in consequence it's still in experimental status Created by Janar Rahumeel (CGI Estonia)

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.Builder, Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor	Description
ShutdownHook()

Method Summary

Modifier and Type	Method	Description
void	run()

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, isVirtual, join, join, join, join, ofPlatform, ofVirtual, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, sleep, start, startVirtualThread, stop, suspend, threadId, toString, yield

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ShutdownHook

public ShutdownHook()

Method Details

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread