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.
For a normal class, we need to create an object first to use its properties and methods. For static classes we do not need to instantiate and we access properties and methods by class name. For singleton classes, we create an instance using its static property and at any time it creates a single instance of a class.tatic class objects cannot be passed as parameters to other methods whereas we can pass instances of a singleton as a parameter to another method.For example we can modify our normal class to have a method which takes a singleton class instance as a parameter. We cannot do this with static classes.