How to access the content of the jar during runtime?

Question

How can I access the content of the jar file which has been started. I want to create a big jar file which contains everything I need and then during runtime I want to copy some files of my jar into an external folder. Is this possible?

Answer 1

You want this.getClass().getClassLoader().getResourceAsStream. Example:

InputStream config =
    this.getClass().getClassLoader().getResourceAsStream("config.txt");