title: How can I synchronize getter while a setter is working in Java
body: <p>I am having a multi-thread application using a single static class which provides a list. I want getters of the static class to work freely (not synchronized against each other) but when a setter is working I want all getters to get locked and wait until setter's job is done. I don't want to lock getters when they are called together since it would degrade performance a lot. Getters are called 1,000,000 times per day and setter is only supposed to work once per day. </p>