A piece of code was unix specific for loading a jar.
The attached file is the a for a generic implementation (works for windows too).
The issue is: Sqoop generates a jar file containing the generated class corresponding to the DB table to import.
his code tries to load the jar in order to read the class, but the path "jar:file://" + new File(jarFile).getAbsolutePath() + "!/" seems not to be a valid windows path.
So I simply replaced the file path
URL url = new URL("jar:file://" + new File(jarFile).getAbsolutePath() + "!/")
URL url = new File(jarFile).toURI().toURL();