If you want a better user experience on your website, there’s a simple secret: early planning. Good designers know that it’s much more difficult to make changes to something after it’s built than before. This is true for designing just about anything, whether it’s a website, car, or new kitchen. …

Mostly we fix software bug, exception which is compile time or run-time, but some problem which not stop program but give wrong output which we should fix before go production. 1. Incorrect calculations — This is seen in functions such as financial and date calculations. …