Uses of Class
dev.langchain4j.exception.LangChain4jException

Packages that use LangChain4jException

Package	Description
dev.langchain4j.agentic.agent
dev.langchain4j.agentic.planner
dev.langchain4j.data.document
dev.langchain4j.exception
dev.langchain4j.guardrail
dev.langchain4j.mcp.client
dev.langchain4j.mcp.registryclient
dev.langchain4j.model
dev.langchain4j.model.anthropic.internal.api
dev.langchain4j.model.ollama
dev.langchain4j.service
dev.langchain4j.service.output
dev.langchain4j.store.embedding.azure.cosmos.nosql
dev.langchain4j.store.embedding.azure.search
dev.langchain4j.store.embedding.elasticsearch
dev.langchain4j.store.embedding.opensearch

Uses of LangChain4jException in dev.langchain4j.agentic.agent

Subclasses of LangChain4jException in dev.langchain4j.agentic.agent

Modifier and Type	Class	Description
class	AgentInvocationException
class	MissingArgumentException

Uses of LangChain4jException in dev.langchain4j.agentic.planner

Subclasses of LangChain4jException in dev.langchain4j.agentic.planner

Modifier and Type	Class	Description
class	AgenticSystemConfigurationException

Uses of LangChain4jException in dev.langchain4j.data.document

Subclasses of LangChain4jException in dev.langchain4j.data.document

Modifier and Type	Class	Description
class	BlankDocumentException

Uses of LangChain4jException in dev.langchain4j.exception

Subclasses of LangChain4jException in dev.langchain4j.exception

Modifier and Type	Class	Description
class	AuthenticationException	Thrown when a request is rejected because the supplied credentials are missing, invalid, or insufficient (HTTP 401 / 403).
class	ContentFilteredException	Exception thrown when the LLM provider refuses to process a request due to content filtering or violation of usage policies.
class	HttpException	Represents an HTTP-level error returned by a model provider.
class	InternalServerException	Thrown when the model provider returns a server-side error (HTTP 5xx).
class	InvalidRequestException	Thrown when the model provider rejects a request because the request itself is malformed or violates the provider's constraints (HTTP 4xx, excluding 401, 403, 404, 408, and 429).
class	ModelNotFoundException	Thrown when the requested model does not exist or is not accessible by the caller (HTTP 404).
class	NonRetriableException	Indicates a permanent error for which retrying the same request will not help.
class	RateLimitException	Thrown when the model provider rejects a request because the caller has exceeded its allowed request or token quota within a time window (HTTP 429).
class	RetriableException	Indicates a transient error that may succeed if the request is retried.
class	TimeoutException	Thrown when a request to the model provider does not complete within the configured time limit (HTTP 408 or a client-side read/connect timeout).
class	ToolArgumentsException	Indicates that something is wrong with the tool arguments.
class	ToolExecutionException	Indicates that something went wrong while executing the tool.
class	UnresolvedModelServerException	Thrown when the model provider's host cannot be resolved (DNS failure or UnresolvedAddressException).
class	UnsupportedFeatureException	Thrown when a requested feature is not supported by the current model provider or the specific model being used.

Uses of LangChain4jException in dev.langchain4j.guardrail

Subclasses of LangChain4jException in dev.langchain4j.guardrail

Modifier and Type	Class	Description
class	GuardrailException	Exception thrown when an input or output guardrail validation fails.
final class	InputGuardrailException	Exception thrown when an input guardrail validation fails.
final class	OutputGuardrailException	Exception thrown when an output guardrail validation fails.

Uses of LangChain4jException in dev.langchain4j.mcp.client

Subclasses of LangChain4jException in dev.langchain4j.mcp.client

Modifier and Type	Class	Description
class	IllegalResponseException
class	McpException	A business exception raised over the MCP protocol

Uses of LangChain4jException in dev.langchain4j.mcp.registryclient

Subclasses of LangChain4jException in dev.langchain4j.mcp.registryclient

Modifier and Type	Class	Description
class	McpRegistryClientException

Uses of LangChain4jException in dev.langchain4j.model

Subclasses of LangChain4jException in dev.langchain4j.model

Modifier and Type	Class	Description
class	ModelDisabledException	An exception thrown by a model that could be disabled by a user.

Uses of LangChain4jException in dev.langchain4j.model.anthropic.internal.api

Subclasses of LangChain4jException in dev.langchain4j.model.anthropic.internal.api

Modifier and Type	Class	Description
class	AnthropicStreamingException

Uses of LangChain4jException in dev.langchain4j.model.ollama

Subclasses of LangChain4jException in dev.langchain4j.model.ollama

Modifier and Type	Class	Description
class	OllamaStreamingException	Exception thrown when Ollama returns an error during streaming.

Uses of LangChain4jException in dev.langchain4j.service

Subclasses of LangChain4jException in dev.langchain4j.service

Modifier and Type	Class	Description
class	IllegalConfigurationException
class	ModerationException	Thrown when content moderation fails, i.e., when content is flagged by the moderation model.

Uses of LangChain4jException in dev.langchain4j.service.output

Subclasses of LangChain4jException in dev.langchain4j.service.output

Modifier and Type	Class	Description
class	OutputParsingException

Uses of LangChain4jException in dev.langchain4j.store.embedding.azure.cosmos.nosql

Subclasses of LangChain4jException in dev.langchain4j.store.embedding.azure.cosmos.nosql

Modifier and Type	Class	Description
class	AzureCosmosDBNoSqlRuntimeException

Uses of LangChain4jException in dev.langchain4j.store.embedding.azure.search

Subclasses of LangChain4jException in dev.langchain4j.store.embedding.azure.search

Modifier and Type	Class	Description
class	AzureAiSearchRuntimeException

Uses of LangChain4jException in dev.langchain4j.store.embedding.elasticsearch

Subclasses of LangChain4jException in dev.langchain4j.store.embedding.elasticsearch

Modifier and Type	Class	Description
class	ElasticsearchRequestFailedException

Uses of LangChain4jException in dev.langchain4j.store.embedding.opensearch

Subclasses of LangChain4jException in dev.langchain4j.store.embedding.opensearch

Modifier and Type	Class	Description
class	OpenSearchRequestFailedException