Class LangChain4jException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

dev.langchain4j.exception.LangChain4jException

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AgenticSystemConfigurationException, AgentInvocationException, AnthropicStreamingException, AzureAiSearchRuntimeException, AzureCosmosDBNoSqlRuntimeException, BlankDocumentException, ElasticsearchRequestFailedException, GuardrailException, HttpException, IllegalConfigurationException, IllegalResponseException, McpException, McpRegistryClientException, ModelDisabledException, ModerationException, NonRetriableException, OllamaStreamingException, OpenSearchRequestFailedException, OutputParsingException, RetriableException, ToolArgumentsException, ToolExecutionException, UnsupportedFeatureException

public class LangChain4jException
extends RuntimeException

The root unchecked exception for all LangChain4j-specific errors.

All library exceptions extend this class, making it the single catch point for callers that need to handle any LangChain4j error uniformly. For more targeted handling, prefer catching a specific subclass such as RetriableException or NonRetriableException.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
LangChain4jException(String message)
LangChain4jException(String message, Throwable cause)
LangChain4jException(Throwable cause)

Method Summary

Methods inherited from class Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

LangChain4jException

public LangChain4jException(String message)

LangChain4jException

public LangChain4jException(Throwable cause)

LangChain4jException

public LangChain4jException(String message,
 Throwable cause)