Vector or ArrayList in Java

Synchronization:

Vector thì synchronized, safe-thread. Còn ArrayList thì unsynchronized, not safe-thread. Tùy tình huống mà ứng dụng. Nếu cần synchronized thì dùng Vector, không cần thì dùng ArrayList. Vì dùng synchronized phải trả giá vì nó chậm hơn unsynchronized.

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