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How to Build and Deploy Java AI Agents Using Google's ADK on Debian 13

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A new developer guide demonstrates how to build and deploy a Java-based AI agent using Google's Agent Development Kit (ADK) on a Debian 13 'Trixie' base system. The tutorial walks through setting up Java 25 via SDKMAN, installing Maven, and configuring the Google Cloud CLI for Vertex AI authentication. The sample project creates a multi-tool agent powered by Gemini 2.5 Flash, capable of answering questions about time and weather in a given city. It uses ADK for Java version 1.7.0, which includes improvements such as more reliable function-tool streaming, safer session handling, and better observability. The guide supports two authentication modes — a Gemini API key for local development or Google Cloud credentials for cloud deployment via Cloud Run.

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How to Build and Deploy Java AI Agents Using Google's ADK on Debian 13 · ShortSingh