Java crashing issue with Rev Library

Technical Java
1

Hi, we recently bought the SDS Swerve Drive Kit (The MK4) and I am currently trying to ‘import’ the template from their github. I think I’ve done everything correctly, but I am getting a runtime error:

  • ********** Robot program starting **********

  • Unhandled exception: java.lang.ClassNotFoundException: edu.wpi.first.wpiutil.RuntimeLoader

  • Error at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source): Unhandled exception: java.lang.ClassNotFoundException: edu.wpi.first.wpiutil.RuntimeLoader

  • at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)

  • The robot program quit unexpectedly. This is usually due to a code error.
    The above stacktrace can help determine where the error occurred.
    See Reading Stacktraces — FIRST Robotics Competition documentation for more information.

  • The startCompetition() method (or methods called by it) should have handled the exception above.

  • at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)

  • at java.base/java.lang.ClassLoader.loadClass(Unknown Source)

  • at com.revrobotics.jni.RevJNIWrapper.(RevJNIWrapper.java:42)

  • at com.revrobotics.CANSparkMaxLowLevel.(CANSparkMaxLowLevel.java:38)

  • at frc.robot.subsystems.drivingSystem.(drivingSystem.java:25)

  • at frc.robot.RobotContainer.(RobotContainer.java:21)

  • at frc.robot.Robot.robotInit(Robot.java:30)

  • at edu.wpi.first.wpilibj.TimedRobot.startCompetition(TimedRobot.java:107)

  • at edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:373)

  • at edu.wpi.first.wpilibj.RobotBase.startRobot(RobotBase.java:463)

  • at frc.robot.Main.main(Main.java:27)

  • Warning at edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:388): The robot program quit unexpectedly. This is usually due to a code error.

  • The above stacktrace can help determine where the error occurred.

  • See Reading Stacktraces — FIRST Robotics Competition documentation for more information.

  • Error at edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:395): The startCompetition() method (or methods called by it) should have handled the exception above.

  • NT: server: client CONNECTED: 10.40.60.188 port 57670

  • pure virtual method called

  • terminate called without an active exception

It seems to be coming from the Rev Library, and this seems to be caused by outdated libraries, but I am using the latest libraries provided by all manufacturers, so I really have no clue what could be causing this. Code is at GitHub - R0NAM1/FRC_2022_Rapid_React: 2022 Game Year (Cloned From 2021).

2

And by import I mean copy pasting their code into ours, which isn’t really much, just a bare command based robot program.

3

It doesn’t look like you have update to the latest version of sdslib.

4

I didn’t realize they released an update, updating that plus removing some syntax it now works! Just need to calibrate…

5

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