import com.spire.doc.*;
import com.spire.doc.interfaces.ITable;

    public class MergeCells {
    public static void main(String[] args) throws Exception {

        //Create an object of Document class and load the sample document.
        Document document = new Document();
        document.loadFromFile("Sample.docx");

        //Get the first section
        Section section = document.getSections().get(0);

        //Get the first table
        Table table = section.getTables().get(0);

        //Invoike mergeCell()method to merge cells vertically
        mergeCell(table, false, 0, 1, 3);

        //Invoike mergeCell()method to merge cell horizontally
        mergeCell(table, true, 0, 4, 5);

        //Save the document to file
        document.saveToFile("MergeTable.docx",FileFormat.Docx_2013);
}

        //Customize a mergeCell() method to remove the duplicate values while merging cells
        public static void mergeCell(Table table, boolean isHorizontalMerge, int index, int start, int end) {
        
        if (isHorizontalMerge) {
            //Get a cell from table
            TableCell firstCell = table.get(index, start);
            //Invoke getCellText() method to get the cell’s text
            String firstCellText = getCellText(firstCell);
            for (int i = start + 1; i <= end; i++) {
                TableCell cell1 = table.get(index, i);
                //Check if the text is the same as the first cell                
        if (firstCellText.equals(getCellText(cell1))) {
                    //If yes, clear all the paragraphs in the cell
                    cell1.getParagraphs().clear();
                }
            }
            //Merge cells horizontally
            table.applyHorizontalMerge(index, start, end);

        } 
            else {
            TableCell firstCell = table.get(start, index);
            String firstCellText = getCellText(firstCell);
            for (int i = start + 1; i <= end; i++) {
                TableCell cell1 = table.get(i, index);
                if (firstCellText.equals(getCellText(cell1))) {
                    cell1.getParagraphs().clear();
                }
            }
            //Merge cells vertically
            table.applyVerticalMerge(index, start, end);
        }
    }
        public static String getCellText(TableCell cell) {

        StringBuilder text = new StringBuilder();
        //Traverse all the paragraphs of a cell
        for (int i = 0; i < cell.getParagraphs().getCount(); i++) {
            //Get every paragraph’s text and append it to StringBuilder
            text.append(cell.getParagraphs().get(i).getText().trim());
        }
        return text.toString();
    }
}

import com.spire.xls.*;
import com.spire.xls.core.*;
import java.awt.*;

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

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

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

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

        //Get the specific cell range
        CellRange range = sheet.getCellRange("B2:B13");

        //Add the conditional formatting of data bars in the cell range
        IConditionalFormat format = range.getConditionalFormats().addCondition();
        format.setFormatType( ConditionalFormatType.DataBar);

        //Set color for the data bars
        format.getDataBar().setBarColor( Color.GREEN);

        //Save to file
        workbook.saveToFile("ApplyDataBars.xlsx", ExcelVersion.Version2013);
    }
}

PM> Install-Package Spire.XLS

using Spire.Xls;

namespace CopyCellRange
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Workbook object
            Workbook sourceBook = new Workbook();

            //Load the source workbook
            sourceBook.LoadFromFile(@"C:\Users\Administrator\Desktop\source.xlsx");

            //Get the source worksheet
            Worksheet sourceSheet = sourceBook.Worksheets[0];

            //Get the source cell range
            CellRange sourceRange = sourceSheet.Range["A1:E4"];

            //Create another Workbook objecy
            Workbook destBook = new Workbook();

            //Load the destination workbook
            destBook.LoadFromFile(@"C:\Users\Administrator\Desktop\destination.xlsx");

            //Get the destination worksheet
            Worksheet destSheet = destBook.Worksheets[0];

            //Get the destination cell range
            CellRange destRange = destSheet.Range["B2:F5"];

            //Copy data from the source range to the destination range
            sourceSheet.Copy(sourceRange, destRange);

            //Loop through the columns in the source range
            for (int i = 0; i < sourceRange.Columns.Length; i++)
            {
                //Copy the column widths also from the source range to destination range
                destRange.Columns[i].ColumnWidth = sourceRange.Columns[i].ColumnWidth;
            }
            
            //Save the destination workbook to an Excel file
            destBook.SaveToFile("CopyRange.xlsx");
        }
    }
}

Imports Spire.Xls
 
Namespace CopyCellRange
    Class Program
        Shared  Sub Main(ByVal args() As String)
            'Create a Workbook object
            Dim sourceBook As Workbook =  New Workbook() 
 
            'Load the source workbook
            sourceBook.LoadFromFile("C:\Users\Administrator\Desktop\source.xlsx")
 
            'Get the source worksheet
            Dim sourceSheet As Worksheet =  sourceBook.Worksheets(0) 
 
            'Get the source cell range
            Dim sourceRange As CellRange =  sourceSheet.Range("A1:E4") 
 
            'Create another Workbook objecy
            Dim destBook As Workbook =  New Workbook() 
 
            'Load the destination workbook
            destBook.LoadFromFile("C:\Users\Administrator\Desktop\destination.xlsx")
 
            'Get the destination worksheet
            Dim destSheet As Worksheet =  destBook.Worksheets(0) 
 
            'Get the destination cell range
            Dim destRange As CellRange =  destSheet.Range("B2:F5") 
 
            'Copy data from the source range to the destination range
            sourceSheet.Copy(sourceRange, destRange)
 
            'Loop through the columns in the source range
            Dim i As Integer
            For  i = 0 To  sourceRange.Columns.Length- 1  Step  i + 1
                'Copy the column widths also from the source range to destination range
                destRange.Columns(i).ColumnWidth = sourceRange.Columns(i).ColumnWidth
            Next
 
            'Save the destination workbook to an Excel file
            destBook.SaveToFile("CopyRange.xlsx")
        End Sub
    End Class
End Namespace

import com.spire.doc.Document;
import com.spire.doc.FileFormat;
import com.spire.doc.documents.ImageType;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class ConvertWordToOtherFormats {

    public static void main(String[] args) throws IOException {

        //Create a Document object.
        Document doc = new Document();

        //Load the Word document.
        doc.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.docx");

        //Save Word as SVG.
        doc.saveToFile("output/ToSVG.svg",FileFormat.SVG);

        //Save Word as RTF.
        doc.saveToFile("output/ToRTF.rtf",FileFormat.Rtf);

        //Save Word as XPS.
        doc.saveToFile("output/ToXPS.xps",FileFormat.XPS);

        //Save Word as XML.
        doc.saveToFile("output/ToXML.xml",FileFormat.Xml);

        //Save Word as TXT.
        doc.saveToFile("output/ToTXT.txt",FileFormat.Txt);
    }
}