What do two semicolons mean in Java for loop?

Question

I was looking inside the AtomicInteger Class and I came across the following method:

/**
 * Atomically increments by one the current value.
 *
          


        

Answer 1

It is equivalent to while(true).

A for-loop has three elements:

• initializer
• condition (or termination expression)
• increment expression

for(;;) is not setting any of them, making it an endless loop.

Reference: The for statement