multithreading - How to share variables between two threads in Java? -


this question has answer here:

i beginner learning java. have question, me solve it? :)

i have class named server maintains hashmap variable, , has 2 methods named send() , receive(). want 2 methods run concurrently. send() method use hashmap variable , receive() method change hashmap variable.

please work out. lot!

define hashmap in main thread spawns send , receive threads. make sure use synchronizedmap don't run race condition.


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