asmhatreandClaude Sonnet 5.5
3b52a434f5
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01RjfyTgmERTWLqzafu34Cth
langgraph4j
Companion code for LangGraph4j: Stateful Agent Graphs in Java on ankurm.com.
A loan-approval agent drawn as a graph with conditional routing, checkpoints, a human-in-the-loop
pause and resume, and per-thread state. No model and no API key: every node is deterministic so the
run is reproducible; swapping assessRisk for a model call changes one lambda.
mvn test -pl langgraph4j # rewrites output/*.txt
| File | Role |
|---|---|
LoanState |
The shared state: typed accessors over a map, with an appender channel for the audit trail |
LoanGraph |
Nodes, edges, the conditional route on risk, interruptBefore("humanReview"), the checkpoint saver |
LoanGraphTest |
Five tests; each writes the matching output/NN-*.txt and asserts the same facts |
Verified against org.bsc.langgraph4j:langgraph4j-core 1.9.5, JDK 25, JUnit 6.1.3. The article carries
the explanations; there is no docs/ folder.