What is the Reporter Class in TestNG?
Reporter class is a TestNG add-ons that add log information to your report. The basics of reporter classes is really easy and it only takes a few lines of code.
The TestNG logging feature helps you store reports of all your tests, which is extremely helpful when you later need to analyze the results. This helps avoid the need to rerun all tests, saving you time.
For example, if you have a test case with many steps, Reporter Class can prove to be extremely helpful since it allows you to specify different logs at each step. You can use these logs when debugging the failures of your unit test.
Hope it helps!