FinalizerTest.java

class FinalizerTest {
    private static volatile FinalizerTest sharedInstance;

    @Override
    protected void finalize() throws Throwable {
        sharedInstance = this;
    }

    public static void main(final String args[]) {
        int value = 0;
        for (int i = 0; i < 1; i++) {
            final FinalizerTest instance = new FinalizerTest();
            value ^= instance.hashCode();
        }

        for (int i = 0; i < 20; i++) {
            System.gc();
        }

        System.out.println(sharedInstance);
        System.exit(value);
    }
}