ADDITIONAL SYSTEM INFORMATION :
I am try this on linux ,Ubuntu and windows both see the same peoblem.

A DESCRIPTION OF THE PROBLEM :
When create more then one Scanner class object and we tring to close only one object it closed all the objects of Scanner class
May be it happen becouse all Scanner objects which is same is pointing same location
like python
a=5
b=5
then id(a) is eqaul to id(b)