The Art of Debbuging
The 4W Technique From my perspective that we can solve any bugs by asking these four questions W hen W hat W here W hy When? When a bug or issue arises is the first question. In which scenario or test case does the bug occurs. First, we have to identifying the scenario. Then, confirm the scenario by repeating same case several time or similar case several time. What? What is the desired output what is the program output? Simply what is your end goal? Where? Where is the skewing occurs from the desired path. Where the processing input gets modified to something not intended or remains unchanged when it should have been processed. Or In case of error, Where is the exception or error occurs? In java which class -> function -> line does the error occurs? It can be identified from error stack trace. Why? At last the most crucial part, Why it occurs ?? Why whatever happens, happens? If you find out why it occurs you can most possible solve it. If there is an exception ...