Working with the Neo4J Java Driver

// 1 Create a driver instance
AuthToken auth = AuthTokens.basic(
  "<your_username>",
  "<your_password>"
);
Driver driver = GraphDatabase.driver("neo4j://<your_ip>:<port>", auth);
driver.verifyConnectivity();

// ...

// 2. Now use driver to create a session
//.    try...finally will take care of releasing session resources
try (Session session = driver.session()) {
  // Your transaction code goes here
  // ...
}

// Write your cypher query as String
String findDir = "MATCH (d:Directory {path: $path}) RETURN d";

return session.executeRead(tx -> {
  
  	// Execute query and pass values for named parameters
    var res = tx.run(
      findDir,
      Values.parameters("path", path)
    );

  	// Retrieve single Record result and then get
    // properties as a Map
    if (res.hasNext()) {
        return rowMapper.from(res.single().get("d").asMap());
    }

    return null;
});

String mergeDir = """
    MERGE (d:Directory { path: $path })
    ON CREATE
        SET
            d.recursive = $recursive,
            d.status = $status
    ON MATCH
        SET
            d.recursive = $recursive,
            d.status = $status;
""";

// Pretty similar to 'read' query, you can pass values for
// named parameters as a map
session.executeWriteWithoutResult(tCtx -> tCtx.run(
  	mergeDir,
    rowMapper.asMap(directory)
));