Finding the rows and columns based on their dynamic changes and determining the table structure are necessary when working with dynamic tables in Selenium. To explain the scenario I use a Demo site.

@Test
public void dynamicTableHandling(){
    WebDriver driver = new ChromeDriver();
    driver.manage().window().maximize();
    driver.get("https://practice.expandtesting.com/dynamic-table");
    List<WebElement> Raws =  driver.findElements(By.xpath("//table[@class='table table-striped']/tbody/tr"));
    System.out.println("The no. of raws : "+Raws.size());

    for(int r=1;r<=Raws.size();r++){
        WebElement name = driver.findElement(By.xpath("//table[@class='table table-striped']/tbody/tr["+r+"]/td[1]"));
        if(name.getText().equals("Chrome"))
        {
            String CPULoad = driver.findElement(By.xpath("//td[text()='Chrome']//following-sibling::*[contains(text(),\"%\")]")).getText();
            System.out.println(CPULoad);
            String Value = driver.findElement(By.id("chrome-cpu")).getText();
            System.out.println(Value);
            if(Value.contains(CPULoad)){
                System.out.println("The CPU Load is equal");
            }
            else{
                System.out.println("The CPU Load is not equal");
            }
            break;
        }

    }
    driver.quit();

}

Here's how to use Java's Selenium WebDriver to manage a dynamic table with shifting rows and columns:

Code Explanation:

As the first step I did setup the driver and navigate to the Demo site.In that case I have Initialized a WebDriver instance (ChromeDriver) and Maximized the browser window and navigates to the given URL.

After that locates all rows in the table using the XPath.

//table[@class='table table-striped']/tbody/tr.

Then prints the total number of rows.

Next Iterated Through Rows using for Loop , through each row using an index (r)and extracted the name in the first column using XPath.

And I checked whether If the name in the first column matches "Chrome", then finds the CPU Load percentage dynamically using

//td[text()='Chrome']//following-sibling::*[contains(text(),\"%\")].

After that retrieved the CPU Load value from a specific element with ID chrome-cpu and compared the two values and prints a message about their equality. Finally Quits the browser after the test.