JAVA: including files in jar and how to access them

Question

I need to include some image files in the exported jar file, I searched a bit and found this and this answers but I can't get it to work.

so my file structure is:

root -assets --clean.png -src ...

I added the assets folder to the build path as suggested but if I unzip the jar the files are not in the assets folder but in the root.

I tried the following codes:

InputStream i = getClass().getResourceAsStream("assets/clean.png"); InputStream i = getClass().getResourceAsStream("/assets/clean.png"); InputStream i = getClass().getResourceAsStream("clean.png"); InputStream i = getClass().getResourceAsStream("/clean.png");

but they none of them work, i is null. What I'm missing?

I'm using Maven

Do you use Maven ? Did you unzip your JAR to check if your resources were actually included ? — Mickael
– Mickael, Commented Jun 27, 2016 at 10:02
maven.apache.org/guides/introduction/…. Your resources must be in src/main/resources. — JB Nizet
– JB Nizet, Commented Jun 27, 2016 at 10:11

Mickael · Accepted Answer · 2016-06-27 10:11:58Z

You should add your files into Maven resource directory src/main/resources or src/test/resources for tests.

Documentation : https://maven.apache.org/plugins/maven-resources-plugin/

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