This article demonstrates how to highlight the duplicate and unique values in a selected range through conditional formatting using Spire.XLS for Java.

import com.spire.xls.*;

import java.awt.*;

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

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

        //Load a sample Excel file
        workbook.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.xlsx");

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

        //Use conditional formatting to highlight duplicate values in the range "A2:A11" with red 
        ConditionalFormatWrapper format1 = sheet.getCellRange("A2:A11").getConditionalFormats().addCondition();
        format1.setFormatType(ConditionalFormatType.DuplicateValues);
        format1.setBackColor(Color.red);
        
        //Use conditional formatting to highlight unique values in the range "A2:A11" with yellow
        ConditionalFormatWrapper format2 = sheet.getCellRange("A2:A11").getConditionalFormats().addCondition();
        format2.setFormatType(ConditionalFormatType.UniqueValues);
        format2.setBackColor(Color.yellow);

        //Save the document
        workbook.saveToFile("HighlightDuplicates.xlsx", ExcelVersion.Version2016);
    }
}

A watermark in a Word document is a semitransparent text or image background that is used to highlight something important about the document, such as using text watermark to remind the reader that the document is confidential or just a draft and declaring copyright through a picture of your company. Sometimes watermarks can affect the readability of documents, and if we want to remove them, Spire.Doc for Java will be of great help. This article shows the detailed steps of removing watermarks from Word documents with the help of Spire.Doc for Java.

Install Spire.Doc for Java

First, you're required to add the Spire.Doc.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.doc</artifactId>
        <version>13.11.2</version>
    </dependency>
</dependencies>

Remove the Watermark from a Word Document

The detailed steps of removing a watermark are as follows:

• Create an object of Document.
• Load a Word document from disk using Document.loadFromFile() method.
• Set the watermark to null to remove the watermark using Document.setWatermark() method.
• Save the Word document using Document.saveToFile() method.

import com.spire.doc.*;

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


        //Create an object of Document
        Document document = new Document();

        //Load a Word document from disk
        document.loadFromFile("D:/testp/test.docx");

        //Set the watermark value to null to remove the watermark
        document.setWatermark(null);

        //Save the Word document
        String output = "D:/javaOutput/removeWatermark.docx";
        document.saveToFile(output, FileFormat.Docx_2013);
    }
}

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.

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.