DistanceTest.java

package org.firstinspires.ftc.teamcode;

import com.qualcomm.robotcore.eventloop.opmode.Disabled;
import com.qualcomm.robotcore.eventloop.opmode.TeleOp;
import com.qualcomm.robotcore.hardware.DcMotor;
import org.firstinspires.ftc.robotcore.external.navigation.DistanceUnit;
import com.qualcomm.robotcore.hardware.DistanceSensor;
import com.qualcomm.robotcore.eventloop.opmode.LinearOpMode;

@TeleOp
@Disabled
public class DistanceTest extends LinearOpMode {
    DistanceSensor distance;

    @Override
    public void runOpMode() {
        // Get the distance sensor and motor from hardwareMap
        distance = hardwareMap.get(DistanceSensor.class, "2m");

        // Loop while the Op Mode is running
        waitForStart();
        while (opModeIsActive()) {
            // If the distance in centimeters is less than 10, set the power to 0.3
            telemetry.addLine(String.valueOf(distance.getDistance(DistanceUnit.CM)));
            telemetry.update();
        }
    }
}