How to handle dynamic web table using selenium webDriver?

//No.of Columns
List col = wd.findElements(By.xpath(“.//*[@id=\”leftcontainer\”]/table/thead/tr/th”));
System.out.println(“No of cols are : ” +col.size());

//No.of rows
List rows = wd.findElements(By.xpath(“.//*[@id=’leftcontainer’]/table/tbody/tr/td[1]”));
System.out.println(“No of rows are : ” + rows.size());

Fetch 3rd row and 2nd cell data
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//To find third row of table
WebElement tableRow = baseTable.findElement(By.xpath(“//*[@id=\”leftcontainer\”]/table/tbody/tr[3]”));
String rowtext = tableRow.getText();
System.out.println(“Third row of table : “+rowtext);

//to get 3rd row’s 2nd column data
WebElement cellIneed = tableRow.findElement(By.xpath(“//*[@id=\”leftcontainer\”]/table/tbody/tr[3]/td[2]”));
String valueIneed = cellIneed.getText();
System.out.println(“Cell value is : ” + valueIneed);