Tutorial

A progressive tutorial for learning the Claude Agent SDK Java.

This project has moved. Current docs: lab.pollack.ai/projects/claude-agent-sdk.

A progressive, hands-on tutorial. Each module takes 15-30 minutes and focuses on one concept.

Prerequisites

• Java 21 or later
• Maven 3.8+
• Claude CLI installed and authenticated (claude login)

Tutorial Structure

Part	Modules	Topics
1. Fundamentals	01-04	Query API, ClaudeSyncClient, Message Types
2. Configuration	05-08	CLI Options, Permissions, Structured Output
3. Sessions & State	09-12	Multi-turn, Resume, Fork, Streaming
4. Safety & Control	13-16	Callbacks, Hooks, Interrupts
5. MCP Integration	17-19	External servers, Spring AI, Custom tools
6. Multi-Agent	20-22	Subagents, Parallel execution, Patterns
Capstone	Final	Complete research agent project

Getting the Code

git clone https://github.com/spring-ai-community/claude-agent-sdk-java-tutorial.git
cd claude-agent-sdk-java-tutorial

Running a Module

mvn compile exec:java -pl module-01-hello-world

Three API Styles

The SDK provides three ways to interact with Claude:

API	Class	Programming Style	Best For
One-shot	Query	Static methods	Simple queries, scripts
Blocking	ClaudeSyncClient	Iterator-based	Traditional applications, synchronous workflows
Reactive	ClaudeAsyncClient	Flux/Mono	Non-blocking applications, high concurrency

Both ClaudeSyncClient and ClaudeAsyncClient support the full feature set: multi-turn conversations, hooks, MCP integration, and permission callbacks. They differ only in programming paradigm.

The tutorial primarily uses Query for simple examples and ClaudeSyncClient for advanced features (blocking is more accessible to most developers).

Start Learning

Begin with Module 01: Hello World to write your first Claude Agent SDK program.