Why every time we need to copy driver into our every project while working on JDBC net beans. Is it always necessary. Why cant we just install it one time and use it with all our projects like we install drivers in our OS. I am learning how to work on JDBC and really annoyed to copy driver to every new project.
You don't have to copy the JDBC driver to every project.
You can define the JDBC driver as a global library using Tools -> Library, e.g.:
Then in the properties of your project, select that library: