Twitter: @juanantoniobm

101 Cursor AI

Learning to use for Java Enterprise projects

v0.2.0-SNAPSHOT (30min talk)

Version control

"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

Who I am

Juan Antonio Breña Moral
Software Engineering Manager @ Capital One, C1

Twitter | Github | LinkedIn
"Make it work, make it right, make it fast."
- Kent Beck
"Lead me, follow me, or get out of my way.",
"Pressure makes diamonds."
- George S. Patton Jr.
Source: Leavitt's Alignment Model (1965) >> People, Process and Technology Framework

This talk couldn't age well over time.
(The market evolves rapidly)

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?

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

Source: https://www.thoughtworks.com/radar/tools/summary/cursor
Source: https://www.infoq.com/articles/architecture-trends-2025/

Cursor platform

For Software Engineers:

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

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:

Source: https://cursor.com/agents

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

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.

Source: https://www.cursor.com/privacy

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.

Source: https://trust.cursor.com/

Demos

  • Software Engineer features
    • Tab model
    • Models
    • Cursor rules
    • Modes (Agent, Ask, Manual)
  • 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

Source: https://docs.cursor.com/get-started/introduction#tab
Source: https://www.cursor.com/blog/tab-update

Models

Cursor provides access to main Commercial LLMs


Source: https://docs.cursor.com/settings/models

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.

Source: https://docs.cursor.com/context/rules

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.

Cursor rules

Where I can find specific cursor rules for 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.

Source: https://docs.cursor.com/chat/overview

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:

Slides

                        
                            jbang trust list
                            jbang cache clear
                            jbang catalog list jabrena
                            jbang qr-code@jabrena \
                                --url https://jabrena.github.io/101-cursor/

🙏 🙏 🙏

Thanks