When you call System.exit() it will stop the execution of the thread at that point and not call any finally blocks.
private static final Object lock = new Object();
public static void main(String... args) {
Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
@Override
public void run() {
System.out.println("Locking");
synchronized (lock) {
System.out.println("Locked");
}
}
}));
synchronized (lock) {
System.exit(0);
}
}
What does this program print?
Replace System.exit(0) with Thread.currentThread().stop() and run again for comparison.
From http://vanillajava.blogspot.com/2011/12/java-puzzle-systemexit-and-locks.html
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