hierarchy of TestNG annotations

“What’s the hierarchy of TestNG annotations? Explain me about annotation hierarchy & execution order?

Please find hierarchy below:

1. org.testng.annotations.Parameters (implements java.lang.annotation.Annotation)
2. org.testng.annotations.Listeners (implements java.lang.annotation.Annotation)
3. org.testng.annotations.Test (implements java.lang.annotation.Annotation)
4. org.testng.annotations.AfterMethod (implements java.lang.annotation.Annotation)
5. org.testng.annotations.BeforeTest (implements java.lang.annotation.Annotation)
6. org.testng.annotations.BeforeMethod (implements java.lang.annotation.Annotation)
7. org.testng.annotations.Optional (implements java.lang.annotation.Annotation)
8. org.testng.annotations.AfterTest (implements java.lang.annotation.Annotation)
9. org.testng.annotations.Guice (implements java.lang.annotation.Annotation)
10. org.testng.annotations.BeforeGroups (implements java.lang.annotation.Annotation)
11. org.testng.annotations.ExpectedExceptions (implements java.lang.annotation.Annotation)
12. org.testng.annotations.TestInstance (implements java.lang.annotation.Annotation)
13. org.testng.annotations.NoInjection (implements java.lang.annotation.Annotation)
14. org.testng.annotations.AfterSuite (implements java.lang.annotation.Annotation)
15. org.testng.annotations.AfterClass (implements java.lang.annotation.Annotation)
16. org.testng.annotations.AfterGroups (implements java.lang.annotation.Annotation)
17. org.testng.annotations.DataProvider (implements java.lang.annotation.Annotation)
18. org.testng.annotations.BeforeSuite (implements java.lang.annotation.Annotation)
19. org.testng.annotations.BeforeClass (implements java.lang.annotation.Annotation)
20. org.testng.annotations.Factory (implements java.lang.annotation.Annotation)
21. org.testng.annotations.Configuration (implements java.lang.annotation.Annotation)
22. org.testng.annotations.ObjectFactory (implements java.lang.annotation.Annotation)

Useful link:
http://www.guru99.com/all-about-testng-and-selenium.html

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