Good evening, I wanted to see if someone can guide me for two problems I have, how can I make a purchase ticket and send it directly from Java and the other question is because when I build my project made with frames, in Do you see me create a Jar, create a Winrar? Thank you. The IDE that I use is Netbeans.
I do not think you are creating a WinRAR, what should happen is that the WinRAR recognizes the .jar extension and that's why it appears with its icon, to check it, right click on the file, select Properties and check what extension it has.
For the ticket, once I used iReport to generate PDFs from java and print it, give a revised Java library to me it was very useful.
Greetings
The ticket is complex because you should first try it and if you need help to correct a problem here we will be to help you. The winrar is because basically a jar is a compressed file. Then the most possible thing is that the extension .jar is associated with the winrar to run, so you do not have any problem with it. It is more if you change to a jar the extension for a .zip you will be able to unzip it normally.