https://github.com/langchain4j
https://hackmd.io/@alculexum/embedding4j

https://github.com/langchain4j/langchain4j

https://github.com/langchain4j/langchain4j-examples/
https://github.com/langchain4j/langchain4j-examples/tree/main/tutorials
https://github.com/langchain4j/langchain4j-examples/tree/main/spring-boot-example
https://github.com/langchain4j/langchain4j-examples/tree/main/jakartaee-microprofile-example
https://github.com/langchain4j/langchain4j-examples/tree/main/quarkus-example
https://github.com/langchain4j/langchain4j-examples/tree/main/rag-examples
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_01_Advanced_RAG_with_Query_Compression_Example.java
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_03_Advanced_RAG_with_ReRanking_Example.java
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_04_Advanced_RAG_with_Metadata_Example.java
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_05_Advanced_RAG_with_Metadata_Filtering_Examples.java
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_06_Advanced_RAG_Skip_Retrieval_Example.java
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_07_Advanced_RAG_Multiple_Retrievers_Example.java
https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_08_Advanced_RAG_Web_Search_Example.java
https://github.com/langchain4j/langchain4j-examples/tree/main/ollama-examples

https://github.com/langchain4j/langchain4j-examples/tree/main/other-examples/src/main/java

https://github.com/langchain4j/langchain4j-examples/blob/main/elasticsearch-example/src/main/java/ElasticsearchEmbeddingStoreWithScriptExample.java
https://github.com/langchain4j/langchain4j-examples/blob/main/elasticsearch-example/src/main/java/ElasticsearchEmbeddingStoreExample.java

2025
https://inside.java/2025/01/29/evolution-of-java-ecosystem-for-integrating-ai/
    https://habr.com/ru/companies/spring_aio/articles/883964/
https://devblogs.microsoft.com/java/microsoft-and-langchain4j-a-partnership-for-secure-enterprise-grade-java-ai-applications/
2024
JavaPro -  Unlocking the Future of Java: LLM Integration Unveiled by Quarkus & LangChain4j | Elder Moraes (EN) 0:00 of 43:40
    https://www.youtube.com/watch?v=MfA4p9kXemo