White Box Testing Vs Black Box Testing

White Box Testing	Black Box Testing
It is a way of testing the software in which the tester has knowledge about the internal structure or the code or the program of the software.	It is a way of software testing in which the internal structure or the program or the code is hidden and nothing is known about it.
Code implementation is necessary for white box testing.	Implementation of code is not needed for black box testing.
It is mostly done by software developers.	It is mostly done by software testers.
Knowledge of implementation is required.	No knowledge of implementation is needed.
It is the inner or the internal software testing.	It can be referred to as outer or external software testing.
It is a structural test of the software.	It is a functional test of the software.
This type of testing of software is started after a detail design document.	This testing can be initiated based on the requirement specifications document.
It is mandatory to have knowledge of programming.	No knowledge of programming is required.
It is the logic testing of the software.	It is the behavior testing of the software.
It is generally applicable to the lower levels of software testing.	It is applicable to the higher levels of testing of software.
It is also called as clear box testing.	It is also called closed testing.
It is most time consuming.	It is least time consuming.
It is suitable for algorithm testing.	It is not suitable or preferred for algorithm testing.
Data domains along with inner or internal boundaries can be better tested.	Can be done by trial and error ways and methods.
Example: By input to check and verify loops	Example: Search something on google by using keywords
It is comparatively more exhaustive than black box testing.	It is less exhaustive as compared to white box testing.