Apache POI Merging Cells

Apache POI allows us to merge cells into a single cell. To do so, it provides methods which takes cell indexes as argument and merge the cells into a single large cell.

In the following example, we are creating two cells and merging them into a single cell. See the example.

Apache POI Merging Cells Example

package poiexample;
import java.io.FileOutputStream;
import java.io.OutputStream;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
public class MergingCellExample {
	public static void main(String[] args) {
	    try (OutputStream fileOut = new FileOutputStream("Javatpoint.xls")) {
		    Workbook wb = new HSSFWorkbook();
		    Sheet sheet = wb.createSheet("Sheet");	
		    Row row = sheet.createRow(1);
		    Cell cell = row.createCell(1);
		    cell.setCellValue("Two cells have merged");
	          //Merging cells by providing cell index
		    sheet.addMergedRegion(new CellRangeAddress(1,1,1,2));
		    wb.write(fileOut);
	    }catch(Exception e) {
	    	System.out.println(e.getMessage());
	    }
	}
}

Output:

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