Synchronization in Vectors in Java

Question

what is meant by vector in Java is thread safe and synchronized, how is it made thread safe. I\'m looking at internal details of implementation

Answer 1

Vector is considered 'thread-safe' because access the the internals of the Vector is synchronized. Methods such as add(), get(), size(), etc, are all synchronized such that modifications to the internal structure of the Vector and access to that internal structure cannot be processed simultaneously by separate threads.