About Question enthuware.ocpjp.v7.2.1083 :

[kashyapa]

Code: Select all

ai.set(ai.get()+1);

why this is wrong????

[admin]

The whole purpose of using AtomicInteger is to increment atomically i.e. in a single operation. In this option, you are incrementing ai in two separate calls, which is not thread safe. Between the time when ai.get() returns a value and ai.set() is called, some other thread may call ai.set with the same value. This will make the count incorrect.
HTH,
Paul.