public enum Role

  1. Object
  2. Enum<Role>
  3. Role

ImplementsComparable<Role>

Author of a ChatMessage. Maps directly to the role string sent on the wire by every supported LLM provider.

Enum constants

SYSTEMDeveloper-supplied instructions that steer the assistant.
USEREnd-user content (text, images, tool results).
ASSISTANTModel output.
TOOLResult of a function/tool invocation, sent back to the model so it can continue reasoning.

Methods

public static Role[] values()
public static Role valueOf(String name)

Inherited methods

From Enum

clone, setEnumValues, getEnumValues, valueOf, equals, hashCode, toString, compareTo, name, ordinal, getDeclaringClass

From Object

getClass, notify, notifyAll, wait, wait, wait

Enum constant details

SYSTEM

SYSTEM
Developer-supplied instructions that steer the assistant. Sent once at the head of the conversation. Gemini receives these as systemInstruction rather than a normal message; the Gemini client handles the conversion internally.

USER

USER
End-user content (text, images, tool results).

ASSISTANT

ASSISTANT
Model output. When the assistant calls a tool the ChatMessage also carries one or more ToolCall entries.

TOOL

TOOL
Result of a function/tool invocation, sent back to the model so it can continue reasoning. Paired with the originating ToolCall via ChatMessage.getToolCallId().

Method details

values

public static Role[] values()

valueOf

public static Role valueOf(String name)