The problem I have is that when I create a new project in netbeans and paste the classes already done in the project folder, it only appears in netbeans while it is open, if I close it and reopen it the project disappears.
Another problem I have is that when copying a project to a USB and importing it from there on another computer, I get an error in a combobox even though in the original project it does not present any error.
Also if someone can tell me why when opening a project done in netbeans instead of appearing with the symbol of the coffee cup, it appears as a normal folder I would appreciate it very much.