I have recently developed a school management system in java netbeans using derby(java built in database).Now i want to make a jar file and proivide it to my client .So can this jar run on client pc without netbeans or java installed? and what about database?
Java must be installed with at least the version of java you used. Embedded databases need no extra installation other than in your code.
Starting from a jar is a bit different than in the IDE from a class path. A jar contains only read-only resources, and the file names in the jar (zip archive) are case-sensitive.
It could be that the software first has to use a resource file as initial template to be copied to the file system. Like a prefilled database to be written to.
jlink to create your own smaller JRE, java run time. (I do not think you are using java 9 though.)