How to print data to a ms word table dynamically in Java

I have a List<String[]> and I populate that from a CSV file.

List<String[]> csvData = ReadCSV.readAll();

So I need to put those data into a table that has many rows depending on the CSV list size but there are only 2 columns. So I need to print those data into a word document in the Zig-Zag order as follows.

_______________________________
|   Data One   |   Data Two   |
_______________________________
|   Data Three |   Data Four  |
_______________________________
|   Data Five  |   Data Six   |
_______________________________

So I am a little confused with this how to do this and get two String[] data at a time. Because the List<String[]> is like the following,

[1st, Data One]
[2nd, Data Two]
[3rd, Data Three]
[4th, Data Four]

So I tried to print the data as follows,

for (int i = 0; i < csvData.size(); i = i + 2) {
    String[] arrayOne = csvData.get(i);
    String[] arrayTwo = csvData.get(i + 1);

    // Print in word
    table.getRow(i).getCell(0).setParagraph(paragraph that contains arrayOne data);
    table.getRow(i).getCell(1).setParagraph(paragraph that contains arrayTwo data);
}

But with this approach, I am getting errors if there is an odd number of data in the CSV file and the table.getRow(i) is also not working correctly. I tried with array merging also but didn't work when the CSV list has an odd number of data. So what is the best approach to do what I need? Anybody can help me to achieve this? Thanks in advance.

If the table shall have two columns, then it needs int rows = (int)Math.ceil(csvData.size()/2d);.

To fill the table you need iterator r for rows as well as iterator c for columns as well as iterator i for iterating the list. There is only a cell value to set if i < csvData.size().

Complete working example:

import java.io.FileOutputStream;
import org.apache.poi.xwpf.usermodel.*;
import java.util.*;
public class CreateWordTableFromList {
public static void main(String[] args) throws Exception {
List<String[]> csvData = new ArrayList<String[]>();
csvData.add(new String[]{"1st", "Data One"});
csvData.add(new String[]{"2nd", "Data Two"});
csvData.add(new String[]{"3rd", "Data Three"});
csvData.add(new String[]{"4th", "Data Four"});
csvData.add(new String[]{"5th", "Data Five"});
csvData.add(new String[]{"6th", "Data Six"});
csvData.add(new String[]{"7th", "Data Seven"});
//csvData.add(new String[]{"8th", "Data Eight"});
XWPFDocument document = new XWPFDocument();
XWPFParagraph paragraph = document.createParagraph();
XWPFRun run = paragraph.createRun();  
run.setText("The table");
int cols = 2;
int rows = (int)Math.ceil(csvData.size()/2d);
XWPFTable table = document.createTable(rows, cols);
XWPFTableRow row;
XWPFTableCell cell;
int i = 0;
for (int r = 0; r < rows; r++) {
row = table.getRow(r);
for (int c = 0; c < cols; c++) {
cell = row.getCell(c);
if (i < csvData.size()) cell.setText(csvData.get(i)[1]);
i++;
}
}
FileOutputStream out = new FileOutputStream("CreateWordTableFromList.docx");
document.write(out);
out.close();
document.close();
}
}

To expand on my comment, you can avoid the issues with an odd number of data by using an if statement:

for (int i = 0; i < csvData.size(); i = i + 2) {
String[] arrayOne = csvData.get(i);
// Print in word
table.getRow(i).getCell(0).setParagraph(paragraph that contains arrayOne data);
//Check if the second bit of data in a row exists, otherwise ignore it
if (csvData.size() > i){
String[] arrayTwo = csvData.get(i + 1);
table.getRow(i).getCell(1).setParagraph(paragraph that contains arrayTwo data);
}
}