Difference between Black Box and White Box Testing

Black Box Testing White Box Testing
1 In this testing knowledge of programming is not necessarily essential. In this form of testing knowledge of programming is must means it is essential.
2 Normally independent software testers are responsible for doing this type of testing. Normally software developers are responsible for doing this type of testing.
3 In this form of testing Knowledge of implementation is not required. In this form of testing Implementation knowledge is required.
4 In this testing testers may or may not be technically sound. Normally software developers are doing the white box testing but if it is performed by software testers than testers should be technically sound.
5 In this sort of testing testers mainly focuses on the functionality of the system. In this sort of testing developers mainly focuses on the structure means program/code of the system.
6 This testing is done by testers. This testing is mostly done by developers.
7 This type of testing always focuses on what is performing/ carried out. This type of testing always focuses on how it is performing/ carried out.
8 In Black Box Testing no knowledge regarding internal logic of code is needed means no need of programming is necessary. In White Box Testing knowledge regarding internal logic of code is needed means need of programming is mandatory.
9 Other names of this testing include means synonyms of black box testing are testing regarding functionality means Functional testing, Behavioral testing, and Opaque-box/ Closed-box testing that is the reason why in this testing no knowledge of programming is needed. Other names of this testing include means synonyms of white box testing are testing regarding code means Structural testing, Glass-box/ Clear-box testing, Open-box testing/ Transparent-box testing, Logic-driven testing and Path-oriented testing that is the reason why in this testing knowledge of programming is needed.
10 Black box testing means functional test or external test. White box testing means structural test or interior test.

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