Based on the context provided, there are no direct references or examples specifically showing how to retrieve task results using the flytekit-java SDK. The provided links and content mainly focus on discussions around Flyte, including various topics like ContainerTasks with FlyteFile, class-based tasks workflows, execution dates of tasks, and the status of map tasks. However, there's a mention of running single tasks and accessing execution details in Flyte, which might be related but does not directly answer the question regarding the flytekit-java SDK. For detailed examples and guidance on using the flytekit-java SDK, including how to retrieve task results, it would be best to consult the official Flyte documentation or the flytekit-java GitHub repository. The official documentation often includes a comprehensive set of examples and use cases that can help understand how to interact with Flyte programmatically, including task execution and result retrieval.