Learn Java Unit Testing with JUnit 5 in 20 Steps - @BeforeClass and @AfterClass

The video tutorial explains the use of before and after class annotations in testing. It covers the implementation of these methods, emphasizing that before class methods must be static. The tutorial discusses the constraints of static methods, such as the inability to reference instance variables, and suggests using before and after class annotations for performance optimization. The video concludes with a summary of the key points discussed.

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