An open java json api: JSON, JSONObject, JSONArray. Let your libs depend on this api, then you can switch between variant implementations flexibly and easily.
https://jitpack.io/#webee/java-json-api
To install the library add:
repositories {
jcenter()
maven { url "https://jitpack.io" }
}
dependencies {
compile 'com.github.webee:java-json-api:v2.2.0'
}