Question

I’m using maven and storing a properties file in src/main/resources which I can read fine like:

properties.loadFromXML(this.getClass().getClassLoader().
                        getResourceAsStream("META-INF/properties.xml");

Is it possible to then write to this file when it is packaged up as a jar? I’ve tried the following:

properties.storeToXML(new FileOutputStream(new File(this.getClass().getClassLoader().
                        getResource("META-INF/properties.xml").toURI())), "");

This works in Eclipse because it is saving the file to target/classes/META-INF, but not when packaged as a jar, so is it possible to achieve the same thing?

Answer 1

Is it possible to then write to this file when it is packaged up as a jar?

Short answer: no, it is not possible, a jar file is a file, not a directory. And actually, you generally don’t write properties files back to a jar file.

You should put that properties file on the classpath on the local file system, outside a JAR.