Java adds table to PDF

The text will show you how to add a table to a PDF document through Java. When you add a table, you can set the table border, cell placement, cell background color, cell merging, image insertion, row height, column width, font, size, and more.

Tools used: Free Spire.PDF for Java (Free version)

Getting and installing Jar files:

Method 1: Download the jar file bag through the homepage. After downloading, unzip the file and turn the Spire.Pdf.jar file under the lib folder into a Java program. Introduce.

Method 2: Maven Warehouse Introduction by installation.

import com.spire.pdf.graphics.*;
import com.spire.pdf.grid.PdfGrid;
import java.awt.*;

public class CreateGrid {

    public static void main(String[] args) {
        //Create a document and add a PDF page
        PdfDocument doc = new PdfDocument();
        PdfPageBase page = doc.getPages().add();

        //Create a PdfGrid object
        PdfGrid grid = new PdfGrid();

        //Set in-cell margins, standard font, font color, standard background color
        grid.getStyle().setCellPadding(new PdfPaddings(3,3,3,3));
        grid.getStyle().setFont(new PdfTrueTypeFont(new Font("Arial Unicode MS", Font.PLAIN,10), true));
        grid.getStyle().setTextBrush(PdfBrushes.getBlack());
        grid.getStyle().setBackgroundBrush(PdfBrushes.getLightGray());

        //Create a PdfBorders object and set the color and thickness
        PdfBorders borders= new PdfBorders();
        borders.setAll(new PdfPen(PdfBrushes.getWhite(),1f));

        //Data definition
        String[] data = {"Continent;Country;Population;Ratio to World Pop;Flag",
                "Asia;China;1,391,190,000;18.2%; ",
                "Asia;Japan;126,490,000;1.66%; ",
                "Europe;United Kingdom;65,648,054;0.86%; ",
                "Europe;Germany;82,665,600;1.08%; ",
                "North America; Canada; 37,119,000; 0.49%; ",
                "North America; United States; 327,216,000; 4.29%; "
                };
        String[][] dataSource = new String[data.length][];
        for (int i = 0; i < data.length; i++) {
            dataSource[i] = data[i].split("[;]", -1);
        }

        //Fill the table with data
        grid.setDataSource(dataSource);

        //Set cell background color grid.getRows().get(1).getCells().get(4).getStyle().setBackgroundImage(PdfImage.fromFile("F:\\Documents\\flags\\flag-of-China.png "));
        grid.getRows().get(2).getCells().get(4).getStyle().setBackgroundImage(PdfImage.fromFile("F:\\Documents\\flags\\flag-of-Japan.png "));
        grid.getRows().get(3).getCells().get(4).getStyle().setBackgroundImage(PdfImage.fromFile("F:\\Documents\\flags\\flag-of-United-Kingdom.png "));
        grid.getRows().get(4).getCells().get(4).getStyle().setBackgroundImage(PdfImage.fromFile("F:\\Documents\\flags\\flag-of-Germany.png "));
        grid.getRows().get(5).getCells().get(4).getStyle().setBackgroundImage(PdfImage.fromFile("F:\\Documents\\flags\\flag-of-Canada.png "));
        grid.getRows().get(6).getCells().get(4).getStyle().setBackgroundImage(PdfImage.fromFile("F:\\Documents\\flags\\flag-of-United-States-of-America.png "));

        //Set the height for each row
        grid.getColumns().get(grid.getColumns().getCount()-1).setWidth(60f);

        //Combine cells vertically
        grid.getRows().get(1).getCells().get(0).setRowSpan(2);
        grid.getRows().get(3).getCells().get(0).setRowSpan(2);
        grid.getRows().get(5).getCells().get(0).setRowSpan(2);

        for (int i = 0; i < data.length ; i++) {

            //Set the height for each column
            grid.getRows().get(i).setHeight(30f);

            //Sets the background color for the first column grid.getRows().get(i).getCells().get(0).getStyle().setBackgroundBrush(PdfBrushes.getDarkGray());
            //Set the font for the first column
grid.getRows().get(i).getCells().get(0).getStyle().setFont(new PdfTrueTypeFont(new Font("Arial",Font.PLAIN,12),true));

            for (int j = 0; j < grid.getColumns().getCount(); j++) {

                //Sets the border style for all cells
grid.getRows().get(i).getCells().get(j).getStyle().setBorders(borders);

                //Sets the alignment of text in all cells
grid.getRows().get(i).getCells().get(j).setStringFormat(new PdfStringFormat(PdfTextAlignment.Center,PdfVerticalAlignment.Middle));

                //Set the font for the first line
grid.getRows().get(0).getCells().get(j).getStyle().setFont(new PdfTrueTypeFont(new Font("Arial",Font.PLAIN,12),true));

                //Sets the background color of the first line
grid.getRows().get(0).getCells().get(j).getStyle().setBackgroundBrush(PdfBrushes.getDarkGray());

            }
        }

        //Draw the table to PDF
        grid.draw(page,0,30);

        //Save document
        doc.saveToFile("Grid.pdf");
        doc.close();
    }
}