Access all tables in a html page with unknown numbers of table

Question

I would like access all tables iterating in a web page with unknown numbers of tables. I have written this code

import java.io.*; 
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlTable;
import com.gargoylesoftware.htmlunit.html.HtmlTableRow;
import com.gargoylesoftware.htmlunit.html.*;
import com.gargoylesoftware.htmlunit.WebClient;


public class test {

public static void main(String[] args) throws Exception {

            WebClient client = new WebClient();
            HtmlPage currentPage = client.getPage("http://www.mysite.com");
            client.waitForBackgroundJavaScript(10000);
            FileWriter fstream = new FileWriter("index.txt");
        BufferedWriter out = new BufferedWriter(fstream);

        for (int i=0;i<2;i++){
         final HtmlTable table =(HtmlTable)    currentPage.getByXPath("//table").get(i);
         for (final HtmlTableRow row : table.getRows()) {
                for (final HtmlTableCell cell : row.getCells()) {
                out.write(cell.asText()+',');
                }
         out.write('\n');
    }
}

out.close();
    client.closeAllWindows();

}
}

i have tried with checking condition:

  while(currentPage.getByXPath("//table")){....}

but is not accepted. What is the correct checking condition?

Answer 1

htmlunit.html.HtmlPage has a method getElementsByTagName(String tagName)

where you can pass it the tagName of "table". Then just get the length of how many it returns, in rough pseudocode:

var x = getElementsByTagName("table");
var nTables = x.length