Black Box Testing:

1. It is also called the functional testing wherein we 
check the functionality of the applicaion through  the 
input and check what is the expected output.

2.  The tester need not have any programming knowledge
3.  the tester legally gives input and see the expected 
output and need not worry about how the application arrived 
at the output.
4.  Testing is done by using outward facing iterface GUI
(Graphical user interface)
5. By black box testing we cannot make sure testing is done 
completly.


White box testing:
1.  It is also called Clear box testing wherein the tester 
needs to examine the internal workings of the component or 
items to be tested.
2.  The tester should have programming knowledge.
3.  Testing is done by using internal application 
programming interface(API).
4.  By this testing we make sure all codes of application 
is being tested ie the Loop, Branch, Path coverage is 
tested atleast once.

White box tetsing is nothing but coding it is also called 
as glassbox tetsing.
in also focus on the programee part rather then the 
funcniality.
black box testing is nothing but funcnality .
these testing is done by the testers.
it also focus on the funcnality rather then the programee 
part.

black box testing is not based on any knowledge of internal 
design or coding. based on requirements and functionality.


white box testing is based on knowledge of internal design 
or coding.

black box
It is also called the functional testing
The tester need not have any programming knowledge

white box
It is also called Clear box testing 
The tester should have programming knowledge.