Creare jar eseguibile con Netbeans

right-click your project,

"set main project",

select your project,

"File",

"PROJECTNAME Properties",

"Run",

set your main class,

"Libraries",

"Add JAR/Folder",

select your wanted libs,

do a CLEAN build,

enter the build-path,

enter /dist and be amazed --> DONE!

JSON Vs JSONP

Qui è spiegato bene:
http://www.soulbit.org/blog/jsonp-with-padding-same-domain-policy-callback-come-usare