ADK for Java opening up to third-party language models via LangChain4j integration

The 0.2.0 release of Google's Agent Development Kit (ADK) for Java introduces integration with the LangChain4j LLM framework, expanding the range of Large Language Models (LLMs) available for developers to build AI agents. This integration allows access to models from various third-party providers and local models via tools like Ollama or Docker Model Runner. Developers can specify models using the LlmAgent builder, which supports both string names and instances of classes extending the BaseLlm abstract class, creating a bridge between ADK and LangChain4j. The release also enhances agent development with improved tooling, asynchronous support, loop control, and advanced logic and memory features, such as chained callbacks and memory management services. These updates aim to make ADK a more flexible framework for creating robust AI agents, and the release encourages new users to explore the possibilities with comprehensive documentation and community support.