Selenium Webdriver not reading CSV file using CSVReader

Question

I am executing a script for a Salesforce page flow with Chrome Webdriver. The flows are written in Selenium JUnit code, exported and executed as JAR (JUnit Request Sampler) in JMeter 5.4.1. The page has a pop-up which has a textbox. which should read all values from a CSV file (currently kept within Selenium Project) one by one [eg. value1, value2...value n] (1 column,'n' rows) until all values are finished. Once one data is entered, "Next" button is clicked for next value to be captured from CSV. "Tube1Id" is the element name of the textbox. Currently the flow when run in JMeter executes till Textbox display in pop-up and stops, just on the step to read the CSV file. Can anyone please help?

public void jmeterTest() throws InterruptedException
{
    try
    {
        String CSVPath = "C:\\Users\\user\\Documents\\CAREDx\\SeleniumProject\\SeleniumProject\\CSVSamples\\samples.csv";   
        driver.get("https://baseurl/");
        
        /* code for pop up window open with Textbox*/
        
        WebElement Tube1Id = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//input[@name='Tube1Id']")));   
                        
        CSVReader reader = null;
        reader = new CSVReader(new FileReader(CSVPath));
        String[] samples;
        while ((samples = reader.readNext()) != null) 
        {               
            String TubeId = samples[0];
            Tube1Id.sendKeys(TubeId);
            log.info(threadName + "::  Tube ID :: " + TubeId);
            
            /* code for Next button click */
        }
    }
}

Answer 1

I found another way to work this out since reading data from an external csv file location didn't work.

I added a CSV Dataset config element in JMeter under JUnit Request [Thread Group>JUnit Request>CSV Data set config], added csv location and variable name (samples). I added the values in CSV file as value 1@value 2@...@value n. In the selenium code I added :

String samples = junitSampler.getThreadContext().getVariables().get("samples");
String[] arrOfStr = samples.split("@");
/* in-between code */
for (String TubeID : arrOfStr)
{
    Tube1Id.clear();
    Tube1Id.sendKeys(TubeID);
/* remaining code for click Next */
}

It's working.