How static methods and variables gets initialized in java memory system?

Question

I'm confused about this part in java -

During java classloader system loads the class file it allocates memory for different variables and methods present in the class file - like for new object memory gets allocated during runtime . But in case of static variables and methods in the class how and when memory gets allocated ? - Please help.

Answer 1

The memory is allocated when the classloader loads the class . It's a shared memory space accessible by all the instance of the class and the class itself. Therefore unsafe to use a static variable in multithreading environment. Solution to static variable in multithreading environment is to make it final as well.