Pivot table is a powerful tool in Excel that supports categorizing, sorting, filtering, and summarizing data. It is often used in situations where data needs to be aggregated and analyzed for reporting. This article will demonstrate how to programmatically create a pivot table in Excel using Spire.XLS for Java.

Install Spire.XLS for Java

First, 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>15.11.3</version>
    </dependency>
</dependencies>

Create a Pivot Table in Excel

The detailed steps are as follows.

• Create a Workbook object.
• Load a sample Excel document using Workbook.loadFromFile() method.
• Get a specified worksheet using Workbook.getWorksheets().get() method.
• Select the data source range using Worksheet.getCellRange() method, and then create a PivotCache to save the data information using Workbook.getPivotCaches().add(CellRange range) method.
• Add a pivot table to the specified worksheet and set the location and cache of it using Worksheet.getPivotTables().add(java.lang.String name, CellRange location, PivotCache cache) method.
• Define row labels of the pivot table and then add fields to the data area to calculate data using PivotTable.getDataFields().add(IPivotField iField, java.lang.String name, SubtotalTypes subtotal) method.
• Set the pivot table style using PivotTable.setBuiltInStyle(PivotBuiltInStyles builtInStyle) method.
• Save the result document using Workbook.saveToFile() method.

import com.spire.xls.*;

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

        //Create a Workbook object
        Workbook workbook = new Workbook();

        //Load a sample Excel document
        workbook.loadFromFile("E:\\Files\\sample.xlsx");

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

        //Select the data source range
        CellRange dataRange = sheet.getCellRange("B1:F11");
        PivotCache cache = workbook.getPivotCaches().add(dataRange);

        //Add a PivotTable to the worksheet and set the location and cache of it
        PivotTable pt = sheet.getPivotTables().add("Pivot Table", sheet.getCellRange("H3"), cache);

        //Define row labels
        PivotField pf=null;
        if (pt.getPivotFields().get("Country") instanceof PivotField){
            pf= (PivotField) pt.getPivotFields().get("Country");
        }
        pf.setAxis(AxisTypes.Row);

        PivotField pf2 =null;
        if (pt.getPivotFields().get("Product") instanceof PivotField){
            pf2= (PivotField) pt.getPivotFields().get("Product");
        }
        pf2.setAxis(AxisTypes.Row);

        //Add data fields to calculate data
        pt.getDataFields().add(pt.getPivotFields().get("Quantity"), "SUM of Quantity", SubtotalTypes.Sum);
        pt.getDataFields().add(pt.getPivotFields().get("Total Amount"), "SUM of Total Amount", SubtotalTypes.Sum);

        //Set pivot table style
        pt.setBuiltInStyle(PivotBuiltInStyles.PivotStyleMedium10);

        //Save the document
        workbook.saveToFile("CreatePivotTable.xlsx", ExcelVersion.Version2013);
    }
}

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.

In Microsoft Excel, the blank rows or columns usually indicate the boundaries of data ranges. Therefore, if a blank row or blank column appears in the wrong place will prevent Excel from recognizing the data range correctly when applying some built-in features such as sorting, removing duplicates and subtotals. In such a case, you can delete the blank rows or columns to create a tidy dataset that fit for further processing and analysis. This article will introduce how to programmatically delete blank rows and columns in an Excel document 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>15.11.3</version>
    </dependency>
</dependencies>

Delete Blank Rows and Columns in Excel

The detailed steps are as follows.

• Create a Workbook object.
• Load a sample Excel document using Workbook.loadFromFile() method.
• Get a specified worksheet using Workbook.getWorksheets().get() method.
• Loop through all used rows in the specified worksheet and determine whether the row is blank using XlsRange.isBlank() method.
• Delete the blank rows using Worksheet.deleteRow() method.
• Loop through all used columns in the specified worksheet and determine whether the column is blank using XlsRange.isBlank() method.
• Delete the blank columns using Worksheet.deleteColumn() method.
• Save the result to another file using Workbook.saveToFile() method.

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

public class DeleteBlankRowsAndColumns {

    public static void main(String[] args) {

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

        //Load a sample Excel document
        wb.loadFromFile("sample.xlsx ");

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

        //Loop through all used rows
        for (int i = sheet.getLastRow(); i >= 1; i--)
        {
            //Detect if a row is blank
            if (sheet.getRows()[i-1].isBlank())
            {
                //Remove blank rows
                sheet.deleteRow(i);
            }
        }

        //Loop through all used columns
        for (int j = sheet.getLastColumn(); j >= 1; j--)
        {
            //Detect if a column is blank
            if (sheet.getColumns()[j-1].isBlank())
            {
                //Remove blank columns
                sheet.deleteColumn(j);
            }
        }

        //Save the document
        wb.saveToFile("DeleteBlankRowsAndColumns.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.

By default, an animation plays only one time and does not repeat. However, we can make the animation to play more than once by setting the repeat type of it. This article demonstrates how to accomplish this function using Spire.Presentation for Java.

import com.spire.presentation.*;
import com.spire.presentation.drawing.animation.AnimationEffect;

public class RepeatAnimation {
    public static void main(String[] args) throws Exception {
        //Create a Presentation instance
        Presentation ppt = new Presentation();
        //Load a PowerPoint document
        ppt.loadFromFile("Animation.pptx");
        
        //Get the first slide
        ISlide slide = ppt.getSlides().get(0);
        
        //Get the first animation effect on the slide
        AnimationEffect animation = slide.getTimeline().getMainSequence().get(0);
        //Set the animation effect to repeat forever until the end of slide.
        animation.getTiming().setAnimationRepeatType(AnimationRepeatType.UtilEndOfSlide);

        //Save the result document
        ppt.saveToFile("RepeatAnimation.pptx", FileFormat.PPTX_2013);
    }
}

Output: