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Java puzzle System.exit and locks

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Java puzzle System.exit and locks

· Java Zone ·
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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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