Image Courtesy: Github

GitHub Copilot has taken a significant leap forward by expanding its deeply integrated AI-powered coding assistance to JetBrains and Eclipse, two of the most popular Java Integrated Development Environments (IDEs). This new release enhances the cross-IDE experience and introduces new agentic capabilities designed to accelerate development, streamline workflows, and help developers maintain coding focus with smarter automation.

Revolutionizing Developer Workflows with New Agentic Features

Highlighting 2025 as the year of intelligent agents, GitHub Copilot now brings Custom Agents and Subagents to JetBrains and Eclipse. These features provide developers with unprecedented control to tailor Copilot to their unique coding styles and project needs.

• Custom Agents allow users to configure Copilot by defining specific instructions, constraints, and tools to fit their workflows, making the AI assistant more personalized and responsive.

• Isolated Subagents operate within clean and focused contexts to improve accuracy in complex, multi-step tasks such as test fixing, code refactoring, or documentation generation.

• Plan Mode empowers developers to break down complex problems into structured, step-by-step plans that Copilot then executes and validates, enhancing reliability and transparency in multi-stage engineering tasks.

Enhancements to Core Developer Experience

Alongside these advanced agentic features, GitHub Copilot has introduced core improvements for everyday coding tasks:

• Next Edit Suggestions, previously launched in JetBrains, are now available in Eclipse. This feature proactively recommends the next best edits or improvements, helping maintain coding momentum without losing context.

• Coding Agent integration is added to Eclipse, enabling asynchronous background processing for tasks like code fixes and transformations. Developers can delegate such tasks and continue working uninterrupted within the IDE.

Powered by Advanced AI Models

All these capabilities are supported by OpenAI’s latest GPT-5.1 models optimized for software engineering. The recent rollout of GPT-5.1, GPT-5.1-Codex, and GPT-5.1-Codex-Mini across multiple IDEs, including JetBrains and Eclipse, delivers improved quality in chat, agent interactions, and code operations.

How Developers Can Get Started

Developers interested in leveraging these new features can download the updated GitHub Copilot extensions at the following links:

• GitHub Copilot for JetBrains

• GitHub Copilot for Eclipse

This new generation of GitHub Copilot offers a faster, smarter, and more adaptive coding assistant tailored specifically to the needs of Java developers working in their preferred IDE environments, helping them modernize code confidently and stay in flow.