vector

In mathematics, physics and engineering, a Euclidean vector
is a geometric object that has magnitude and direction. 
Vectors can be added to other vectors according to vector algebra

Examples include:

1.)displacement
2.)velocity
3.)position
4.)force
5.)torque
Array based data structure
-It is synchronized - thread safe.
-It is mostly used in multi-threaded environment.
-It is much slower than ArrayList because it is
thread-safe