If you're lucky, you'll have a fairly good idea of where the problem lies. Bugs can be present in all phases of the software development life cycle. In ad hoc software development, we often know that our software has bugs, but we don't know exactly what they are. As the number of features in software increases, programs become more complex to construct. This increases the likelihood of introducing bugs and makes it harder to detect them.
Many bugs only present themselves after certain combinations of code are executed.
Detecting Bugs Detecting bugs is a fairly simple task during the early stages of software development. However, the more time you spend looking for bugs, the harder it becomes to find them. The most obvious bugs are spotted first. This means that the everyday user running the software will not see bugs that affect the power user who relies on advanced features. Certain types of Java software present unique challenges.