I have built a small Swing application that wants to resemble to a GIS application.
There is a problem when i try to load an image file (jpg):
-When i run the project from Eclipse, loading a larger image (18000 px) using "ImageIO.read(new File(...))" takes 3 second and starts the fan of my computer.
Anyway, the image is loaded succesfully
-When i try to do this from an exported "runnable jar" of my app, the image doesn't load anymore. The "runnable jar" loads correctly smaller images.
For files inside ZIP or JAR files, you can no longer use java.io.File and its matching stream / reader / writer classes. Instead, you should use Class.getResource, Class.getResourceAsStream, or the same methods from ClassLoader.