101 Cursor AI

Learning to use for Java Enterprise projects

v0.2.0-SNAPSHOT (30min talk)

Version control

• V3: W-JAX (2025/11/06)
• V2: Devoxx BE (2025/10/07)
• V1: Madrid JUG (2025/05/06)

"If you can't describe what you are doing as a process, you don't know what you're doing."
- W. Edwards Deming

"Trust, but verify"
- Russian proverb

Poll

Can you raise your hand ✋, if you use Intellij Idea Ultimate?

Poll

Can you raise your hand ✋, if you have tried Cursor AI?

Poll

Can you raise your hand ✋, if you have tried Claude Code?

Poll

Can you raise your hand ✋, if you have tried Github Copilot?

Agenda (30min)

• Who I am
• Context
• Cursor platform
• Data privacy notes
• Demos
• Q&A

Context

https://www.cursor.com/

Context

Cursor version used for the talk:

ThoughtWorks Radar 2025Q1 // Tools

Really? 😳 🤔

Cursor platform

Cursor little by little is increasing the opportunities to use in Organizations with features for:

• For Software Engineers
• For Data pipelines

Cursor platform

For Software Engineers:

• Cursor AI
• Intellij Idea Ultimate + Cursor Agent CLI
• VSCode + Cursor Agent CLI
• DevContainers + Cursor Agent CLI
• Cursor Web/Mobile

Cursor platform

For Data pipelines:

• Cursor Agent CLI
• Cursor Background Agents API

Cursor platform

For Software Engineers: AS IS

Cursor platform

For Software Engineers: TO BE

Cursor platform

For Software Engineers:

Cursor platform

For Data pipelines: AS IS

Cursor platform

For Data pipelines: TO BE

Cursor platform

For Data pipelines: TO BE

Data privacy notes

• Security features
  • Privacy mode
  • Trust

Source: https://cursor.com/docs/agent/security

Privacy mode

Note: with a Pro account, the developer needs to disable. But with a Business account, this feature is handle at the organization level.

Trust

Cursor operates a continuously monitored and 3rd-party audited security program.

SOC 2 is a compliance framework used to evaluate and validate an organizations information security practices.

Demos

• Software Engineer features
  • Tab model
  • Models
  • Cursor rules
  • Modes (Agent, Ask & Background)
• Data pipelines features
  • Cursor Background Agents API

Tab model

Tab completion in Cursor is powered by advanced AI models that understand your code context. As you type, you'll receive intelligent suggestions that:

• Complete your current line of code
• Suggest entire function implementations
• Help with common patterns and boilerplate
• Adapt to your coding style over time

Models

Cursor provides access to latest Commercial LLMs

Cursor rules

Using rules in Cursor you can control the behavior of the underlying model. You can think of it as instructions and/or a system prompt for LLMs.

Cursor rules

Analogy: In the organizations, exist a specific expert set of roles with the title of IT Champions who define the guidelines for a specific Technology, in our case Java.

• https://google.github.io/styleguide/javaguide.html

Cursor rules

Where I can find specific cursor rules for Java?

• https://github.com/jabrena/cursor-rules-java

How to apply them in my repository? $(pwd).cursor/rules

							
sdk install jbang

jbang cache clear
jbang catalog list jabrena

jbang setup@jabrena init \
--cursor https://github.com/jabrena/cursor-rules-java
							
						

If you have good ideas, PRs are welcome. 🙏🙏🙏

Modes

Natural language interface for exploring, editing, and managing code with contextual AI assistance in Chat mode.

Ask Mode

• Ask questions about specific code sections
• Get explanations of complex functions
• Find code patterns and examples
• Discover and understand your codebase

Source: https://docs.cursor.com/get-started/introduction

Ask Mode

2000's	2010's	2024+
Books	Google, StackOverflow, Blogs, etc...	ChatGPT, Cloude, Gemini...

Agent Mode

• Make codebase-wide changes and refactoring
• Implement new features from requirements
• Debug complex issues across multiple files
• Generate tests and documentation
• Maintain consistency across your entire project

Source: https://docs.cursor.com/get-started/introduction

Agent Mode

Example to fix a test:

Background agents

Using the Background Agents, you can run tasks in the background. Agent autonomously explores your codebase, edits multiple files, runs commands, and fixes errors to complete your requests.

Background agents

Data pipelines features

Using the Background Agents, you can run tasks in the background to automate some complex tasks in your codebase.

Data pipelines features