OPC UA Java Integration with Configurable Security

I need a Java code that can handle OPC UA read and write operations. The code should be capable of fetching security or dissolving it when necessary.

Key Requirements:
- Implement OPC UA read and write operations for data acquisition.
- Provide a combination of both runtime configurable and hardcoded security options.
- Ensure the code is clean, well-documented and efficient.

Ideal Skills:
- Proficiency in Java programming.
- Prior experience with OPC UA.
- Understanding of industrial data acquisition systems.
- Experience with implementing security features in code.
- Ability to write clean, efficient and well-documented code.