Wpilib main erorr java

Tomer1234 · December 23, 2023, 2:10pm

hi, i have 2 errors in my main file and i don’t know how to fix them i haven’t changed anything the errors i get are:
The method startRobot(Supplier) in the type RobotBase is not applicable for the arguments (Robot::new)

The constructed object of type Robot is incompatible with the descriptor’s return type: T

what do i do to fix them

Peter_Johnson · December 23, 2023, 2:18pm

We would have to see your code to be sure, but it sounds like your Robot class (in Robot.java) no longer extends one of the robot base classes (eg Robot extends TimedRobot). It must do so to work.

Tomer1234 · December 23, 2023, 2:23pm

this is my main code:

this is my robot code:

i just started working in wpilib so i dont know much i need to create a tank drive and thats what i did

Peter_Johnson · December 23, 2023, 2:54pm

How did you get the Robot.java file? Are you using RobotBuilder? It looks like maybe what happened is you called one of the subsystems in RobotBuilder “Robot” or otherwise overwrote Robot.java with a subsystem class instead of the normal Robot class.

Tomer1234 · December 23, 2023, 2:56pm

what do you mean? how do i fix that

Peter_Johnson · December 23, 2023, 3:00pm

The Robot class extends SubsystemBase rather than TimedRobot, and overrides/implements the Subsystem methods rather than the TimedRobot methods. While you could try to fix it in place, it’s probably going to be easiest for you to create a new project and just copy the motors/sensors into the correct form of the Robot class.

If you’re using RobotBuilder to make the project, don’t name the subsystem Robot, name it something different.

Tomer1234 · December 23, 2023, 3:06pm

I’m using command robot

Peter_Johnson · December 23, 2023, 4:32pm

This is what Robot.java should look like for a command-based robot.

github.com

wpilibsuite/allwpilib/blob/main/wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/templates/commandbased/Robot.java

// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.

package edu.wpi.first.wpilibj.templates.commandbased;

import edu.wpi.first.wpilibj.TimedRobot;
import edu.wpi.first.wpilibj2.command.Command;
import edu.wpi.first.wpilibj2.command.CommandScheduler;

/**
 * The VM is configured to automatically run this class, and to call the functions corresponding to
 * each mode, as described in the TimedRobot documentation. If you change the name of this class or
 * the package after creating this project, you must also update the build.gradle file in the
 * project.
 */
public class Robot extends TimedRobot {
  private Command m_autonomousCommand;

  private RobotContainer m_robotContainer;

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system · December 22, 2024, 4:33pm

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