Tables are commonly seen in PDF invoices and financial reports. You may encounter the situation where you need to export PDF table data into Excel, so that you can analyze the data using the tools provided by MS Excel. This article explains how to extract tables from a PDF page and export them as individual Excel worksheets using Spire.Office for Java.

Install Spire.Office for Java

The scenario actually uses Spire.PDF for Java for extracting tables from PDF, and Spire.XLS for Java for generating Excel files. In order to use them in the same project, you’ll need to add the Spire.Office.jar file as a dependency in your Java program.

The JAR file can be downloaded from this link. If you use Maven, you can easily import the JAR file in your application by adding the following code to your project’s pom.xml file.

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.office</artifactId>
        <version>11.6.0</version>
    </dependency>
</dependencies>

Export Table Data from PDF to Excel

The following are the main steps to extract all tables from a certain page and save each of them as an individual worksheet in an Excel document.

• Load a sample PDF document while initializing the PdfDocument object.
• Create a PdfTableExtractor object, and call extactTable(int pageIndex) method under it to extract all tables in the first page.
• Create a Workbook instance.
• Loop through the tables in the PdfTable[] array, and get the specific one by its index.
• Add a worksheet to the workbook using Workbook.getWorksheets.add() method.
• Loop through the cells in the PDF table, and get the value of a specific cell using PdfTable.getText(int rowIndex, int columnIndex) method. Then insert the value to the worksheet using Worksheet.get(int row, int column).setText(String string) method.
• Save the workbook to an Excel document using Workbook.saveToFile() method.

import com.spire.pdf.PdfDocument;
import com.spire.pdf.utilities.PdfTable;
import com.spire.pdf.utilities.PdfTableExtractor;
import com.spire.xls.ExcelVersion;
import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

public class ExtractTableDataAndSaveInExcel {

    public static void main(String[] args) {

        //Load a sample PDF document
        PdfDocument pdf = new PdfDocument("C:\\Users\\Administrator\\Desktop\\Tables.pdf");

        //Create a PdfTableExtractor instance
        PdfTableExtractor extractor = new PdfTableExtractor(pdf);
        
        //Extract tables from the first page
        PdfTable[] pdfTables  = extractor.extractTable(0);

        //Create a Workbook object,
        Workbook wb = new Workbook();

        //Remove default worksheets
        wb.getWorksheets().clear();

        //If any tables are found
        if (pdfTables != null && pdfTables.length > 0) {

            //Loop through the tables
            for (int tableNum = 0; tableNum < pdfTables.length; tableNum++) {

                //Add a worksheet to workbook
                String sheetName = String.format("Table - %d", tableNum + 1);
                Worksheet sheet = wb.getWorksheets().add(sheetName);

                //Loop through the rows in the current table
                for (int rowNum = 0; rowNum < pdfTables[tableNum].getRowCount(); rowNum++) {

                    //Loop through the columns in the current table
                    for (int colNum = 0; colNum < pdfTables[tableNum].getColumnCount(); colNum++) {

                        //Extract data from the current table cell
                        String text = pdfTables[tableNum].getText(rowNum, colNum);

                        //Insert data into a specific cell
                        sheet.get(rowNum + 1, colNum + 1).setText(text);

                    }
                }

                //Auto fit column width
                for (int sheetColNum = 0; sheetColNum < sheet.getColumns().length; sheetColNum++) {
                    sheet.autoFitColumn(sheetColNum + 1);
                }
            }
        }

        //Save the workbook to an Excel file
        wb.saveToFile("output/ExportTableToExcel.xlsx", ExcelVersion.Version2016);
    }
}

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.

Office Open XML (also referred to as OOXML) is a zipped, XML-based format for Excel, Word and Presentation documents. Sometimes, you may need to convert an Excel file to Office Open XML in order to make it readable on various applications and platforms. Likewise, you might also want to convert Office Open XML to Excel for data calculations. In this article, you will learn how to Convert Excel to Office Open XML and vice versa in Java using Spire.XLS for Java library.

• Convert Excel to Office Open XML in Java
• Convert Office Open XML to Excel in Java

Install Spire.XLS for Java

First of all, you're required to add the Spire.Xls.jar file as a dependency in your Java program. The JAR file can be downloaded from this link. If you use Maven, you can easily import the JAR file in your application by adding the following code to your project's pom.xml file.

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.xls</artifactId>
        <version>16.6.5</version>
    </dependency>
</dependencies>

Convert Excel to Office Open XML in Java

The following are the steps to convert an Excel file to Office Open XML:

• Create an instance of Workbook class.
• Load an Excel file using Workbook.loadFromFile() method.
• Call Workbook.saveAsXml() method to save the Excel file as Office Open XML.

import com.spire.xls.Workbook;

public class ExcelToOpenXML {
    public static void main(String []args){
        //Create a Workbook instance
        Workbook workbook = new Workbook();
        //Load an Excel file
        workbook.loadFromFile("Sample.xlsx");

        //Save as Office Open XML file format
        workbook.saveAsXml("ToXML.xml");
    }
}

Convert Office Open XML to Excel in Java

The following are the steps to convert an Office Open XML file to Excel:

• Create an instance of Workbook class.
• Load an Office Open XML file using Workbook.loadFromXml() file.
• Call Workbook.saveToFile() method to save the Office Open XML file as Excel.

import com.spire.xls.ExcelVersion;
import com.spire.xls.Workbook;

public class OpenXmlToExcel {
    public static void main(String []args){
        //Create an instance of Workbook class
        Workbook workbook = new Workbook();
        //Load an Office Open XML file
        workbook.loadFromXml("ToXML.xml");

        //Save as Excel XLSX file format
        workbook.saveToFile("ToExcel.xlsx", ExcelVersion.Version2016);
    }
}

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.

Subtotal is a built-in function in Microsoft Excel that enables you to quickly calculate a range of data using a summary function, such as SUM, AVERAGE, COUNT, or MIN. This article will demonstrate how to add subtotals to a data range in Excel in Java using Spire.XLS for Java.

Install Spire.XLS for Java

First of all, you're required to add the Spire.Xls.jar file as a dependency in your Java program. The JAR file can be downloaded from this link. If you use Maven, you can easily import the JAR file in your application by adding the following code to your project's pom.xml file.

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.xls</artifactId>
        <version>16.6.5</version>
    </dependency>
</dependencies>

Add Subtotals to a Data Range

The XlsWorksheet.subtotal() method is used to add subtotals to a data range. It accepts the following parameters:

• IXLSRange: the specific data range.
• int: the column index (zero-based) that you want to base the subtotals on.
• int[]: an array of column indexes (zero-based) on which the subtotals are calculated.
• SubtotalTypes: the function (SUM, AVERAGE etc.) used to calculate the subtotals.
• boolean: Indicates whether to replace existing subtotals.
• boolean: Indicates whether to insert page breaks between groups.
• boolean: Indicates whether to add summary rows below data.

The following are the steps to add subtotals to a data range:

• Create an instance of Workbook class.
• Load an Excel file using Workbook.loadFromFile() method.
• Get the desired worksheet using Workbook.getWorksheets().get() method.
• Access the range that you wish to subtotal using Worksheet.getCellRange() method.
• Add subtotals to the range using XlsWorksheet.subtotal() method.
• Save the result file using Workbook.saveToFile() method.

import com.spire.xls.*;

public class AddSubtotalsToDataRange {
    public static void main(String []args){

        //Create a Workbook instance
        Workbook workbook = new Workbook();
        //Load an Excel file
        workbook.loadFromFile("Report.xlsx");

        //Get the first worksheet
        Worksheet sheet = workbook.getWorksheets().get(0);

        //Access the range that contains data you wish to subtotal
        CellRange range = sheet.getCellRange("A2:C11");

        //Add subtotals to the range, the function is Sum and it will be applied to the 3rd column in the range 
        sheet.subtotal(range, 0, new int[] { 2 }, SubtotalTypes.Sum, true, false, true);

        //Save the result file
        workbook.saveToFile("AddSubtotal.xlsx", ExcelVersion.Version2016);
        workbook.dispose();
    }
}

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.