El Centro Social Security Office Notes. Hours of Social Security offices were extended in March, 2015. Almost all Social Security offices in the continental US have hours of 9:00 to noon on Wednesdays, and 9:00 to 4:00 on other weekdays. See if you can get an appointment by phone. Fridays may be less crowded.
If you create a lock on the class, then all instances of the class will share the lock. If you have 1 instance, there won't be any difference. If you have thousands of instances, they will all use the very same lock. If many threads try to acquire the lock at the same time, they will block each other out.f you create the lock on the instance, then several threads can execute the protected code as long as they operate on different instances. Here, the threads don't block each other. So this approach performs better.
In those cases you can simply wrap the class instance with static members. public static void out(Object msg) { sm_logger.out(msg); } }. RobertDiFalco wrote: After all, a Class object is a natural singleton. If this is true, it should follow that in Java it is more natural to represent a singleton as a Class Object...I disagree. There are three reasons for Singleton, only one of which is that you only want one instance.reate a thread for each singleton at the time that the singleton instance is created. Do not schedule the thread to run, this is not the purpose of the thread. The mere existence of the thread will protect the singleton. Also consider using a registry class which maintains a collection of the singleton instances.