FRC Programming Languages: Java vs C++ vs Python

One of the first real decisions a new FRC team makes is which language to write robot code in. The good news: there is no wrong answer that will keep you off the field. WPILib officially supports three languages — Java, C++, and Python — and a robot written well in any of them can win events. The differences are about how easy the language is to learn, how fast your code runs, and how much help you can find when you get stuck. This guide breaks down all three honestly so you can pick the one that fits your team.

The three officially supported languages#

WPILib is the standard software library every FRC team uses to talk to motors, sensors, and the driver station. According to the WPILib documentation, Java, C++, and Python "were chosen for the officially-supported languages due to their appropriate level-of-abstraction and ubiquity in both industry and high-school computer science classes."

You may also hear about LabVIEW, a graphical language National Instruments historically supported for FRC. It still exists in the ecosystem, but the modern, actively documented path for new teams is one of the three text-based languages above, so that is where this guide focuses.

Here is the short version before we dig in:

Java: the default for most teams#

Java is the most popular FRC language and, for most teams, the recommended starting point. The WPILib docs put it plainly: "New/inexperienced users are encouraged to use Java." It hits a sweet spot between being readable and being safe — the language manages memory for you (so a forgotten cleanup will not silently corrupt your robot), and the compiler catches many mistakes before code ever runs.

The practical advantage of Java is the ecosystem around it. Because so many teams use it, the example code, tutorials, and Chief Delphi forum answers you will find are overwhelmingly in Java. Every vendor ships a polished Java library on day one, and WPILib's own example projects are published with official feature parity across Java, C++, and Python. When your robot misbehaves at 11 p.m. before a competition, having the largest pool of people who have hit your exact problem is worth a lot.

Java code interacts with WPILib classes like TimedRobot, CommandScheduler, and motor controller classes such as SparkMax (REV) or TalonFX (CTRE). Heads up that vendor class names drift between seasons — REV's controller class, for example, was renamed from CANSparkMax to SparkMax in the 2025 library, so older code you find online may use the previous name. Always confirm names against the current vendor docs. Either way, the overall structure you learn in Java carries over almost identically to the other two languages.

C++: maximum performance, more responsibility#

C++ is the choice for teams that want the absolute best performance and the most direct control over the hardware. The WPILib docs describe the tradeoff well: C++ "offers better high-end performance, at the cost of increased user effort. Memory must be handled manually, and the C++ compiler does not do much to ensure user code will not crash at runtime."

That last part is the catch. In Java and Python, the language cleans up memory for you. In C++, you are responsible for it, and a mistake there can crash your robot code mid-match — exactly when you cannot afford it. Modern C++ has tools (like smart pointers) that make this much safer than it used to be, but it is still more to think about.

So who actually benefits? In practice, the roboRIO (the robot's main controller) is fast enough that a typical robot program written in Java runs perfectly well. The performance gap C++ offers mostly matters for unusually heavy computation — for example, running custom vision or control math on the robot itself. Many veteran programmers also simply prefer C++ because they like the control, or because their team has used it for years and has a mature codebase. If that is not you, the performance benefit alone is rarely a reason to choose C++ over Java as a new team. The same WPILib classes (TimedRobot, command-based framework, vendor motor classes) are all available in C++.

Python (RobotPy): the most approachable, with caveats#

Python became an officially supported FRC language in 2024, and it is the most approachable of the three for true beginners. The project that makes this work is RobotPy — a community of FRC mentors and students who maintain the Python bindings. Its documentation lives at robotpy.readthedocs.io.

The biggest surprise for newcomers is performance. You might assume "interpreted Python must be slow," but the RobotPy FAQ explains that Python is "fast enough" and "almost certainly just as fast as Java for typical WPILib-using robot code." The reason: RobotPy is a thin Python layer over the same native C++ WPILib that the other languages use. The heavy lifting happens in compiled C++; only your robot-specific logic is interpreted. So for normal robot code, performance is a non-issue.

Python's honest tradeoffs are elsewhere:

• Crash safety. Because Python is interpreted, the WPILib docs warn that "Python users should take care to test their program to ensure that typos and other issues don't cause robot crashes." A typo Java would flag at compile time can sneak through to the robot, so simulation and testing matter more.
• Smaller, newer community. The RobotPy FAQ notes that "because RobotPy is not yet widely adopted, bugs tend to be found during the first half of competition season." Fewer teams means fewer example projects and forum answers in Python.
• Vendor coverage. Most major vendors are now supported (more on this below), but Python support occasionally lags slightly behind the Java/C++ release, and a niche library may not have a Python version yet.

RobotPy also includes a robot simulator, so you can test logic on a laptop without the robot connected — important given the crash-safety note above.

Vendor library support, by language#

Your robot code is only as useful as the vendor libraries it can call. Here is where the three languages stand for the most common vendors:

CTRE provides an official Python distribution for Phoenix 6, installable with pip install phoenix6 per the Phoenix 6 install docs. For Java and C++, you add Phoenix 6 and REVLib through WPILib's vendor-dependency (vendordep) system in VS Code, as described in the WPILib third-party libraries guide. The takeaway: the libraries most teams need exist in all three languages, but Java/C++ remain the most complete and earliest-updated. Exact package names and versions change each season, so check the current vendor docs before you install.

How to choose#

A few honest rules of thumb:

• No programming experience on the team? Start with Java. It is the WPILib-recommended default, it is what most schools teach, and you will find the most help.
• Your team already knows Python (from a CS class or club)? Python/RobotPy is a legitimate, officially supported choice — just lean hard on the simulator and testing to catch the typos a compiler would have caught.
• You have an experienced programmer who wants maximum control, or an existing C++ codebase? C++ is great, as long as someone understands manual memory management.
• Worried about performance? For nearly every team, don't be. The roboRIO handles normal robot code in any of the three languages, and Python's native-C++ backing keeps it competitive with Java.

Whatever you pick, the concepts transfer. The command-based framework, TimedRobot structure, and PID control you learn in one language map directly onto the others, so a switch later is far easier than learning to program from scratch. Want a structured path from your first line of robot code to a competition-ready program? Start with the LearnFRC Programming track.