Compile and sign a JAVA app into .jar

I have the java source files of an app. It's a Java Swing component for looking up Chinese characters by handwritten/mousewritten input. 1/ Check if The app should work exactly the same way as : [login to view URL] (when you click on the pencil image) > It just means that the app should call the "charCallback(character)" javascript function when we click on a chinese character on the list "choose a character". 2/ Compile and sign it (not auto-signed). The app souldn't be blocked by security parameters on browsers. >>>FIles are attached here :