java.lang.NoSuchFieldError: DEF_CONTENT_CHARSET in Apache Stanbol Integration Tests

Check for multiple versions of httpcore .jar in the class path and remove if any. If there are duplicates, it reads the one which appears first in your classpath.

- Check classpath in Eclipse: Run > Run Configurations > Classpath

- Leave only project dependencies: Select the project > Edit > Edit Runtime classpath > check "Only include exported entries" > Ok > Run