In this codelab, you'll learn how to build AI agents in Java, using the Agents Development Kit (ADK) for Java. We'll move beyond simple Large Language Model (LLM) API calls to create autonomous AI agents that can reason, plan, use tools, and work together to solve complex problems.

You will start by redeeming the Google Cloud credits, setting up your Google Cloud environment, then building your first simple agent, and progressively adding more advanced capabilities like custom tools, web search, and multi-agent orchestration.

What you'll learn

• How to create a basic, persona-driven AI agent.
• How to empower agents with custom and built-in tools (like Google Search).
• How to add your own tools implemented in Java.
• How to orchestrate multiple agents into powerful sequential, parallel, and looping workflows.

What you'll need

1. A web browser that we'll use in Incognito mode.
2. A personal Gmail account.
3. A new Google Cloud project associated with your personal Gmail account.
4. A billing account created with the redeemed Google Cloud credits.
5. The git command-line tool to check out the source code.
6. Java 17+ and Apache Maven.
7. A text editor or IDE, such as IntelliJ IDEA or VS Code.