At the very least the class loader should have methods for accessing resources from JARs, eg:
getResource(String resource)
getSystemResource(String resource)
getResourceAsStream(String resource)
getSystemResourceAsStream(String resource)
JME (
Java Mobile Edition) has very basic IO functionality which is greatly reduced when compared to JSE (Java Standard Edition). The InputStream and OutputStream classes are present in the JME CLDC API.
You should in theory be able to read a resource (eg properties file) from a JAR in JME which is in the classpath (specified by the manifest file or through a program parameter). Is your class loader for JME going to be available for CLDC devices?