jxl : Create new sheet for xls

Workbook class has “createSheet” method which takes sheet name and position it will occupy in the workbook.

Ex:

WritableSheet sheet = workbook.createSheet("sheet1", 0);

Above statement creates a sheet named “sheet1” and occupies first position.

Make sure whatever the operation, you performs on writable sheet, you called below methods before closing.

workbook.write();

workbook.close();

If you call close() without calling write() first, a completely empty file will be generated.

public class WorkBookNotInitializedException extends RuntimeException{

    WorkBookNotInitializedException(){
        super("work book is not initialized");
    }
}

import java.io.IOException;
import jxl.*;
import jxl.write.*;
import java.io.File;

public class XLSWritableUtils {
    WritableWorkbook workbook = null;

    public XLSWritableUtils(String fileName){
        try {
            workbook = Workbook.createWorkbook(new File(fileName));
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    private void checkWorkbookInitialized(){
        if(workbook == null)
            throw new WorkBookNotInitializedException();
    }

    public void createSheet(String sheetName, int index){
        checkWorkbookInitialized();
        workbook.createSheet(sheetName, index);
    }

    public void close(){
        checkWorkbookInitialized();
        try{
           workbook.write();
           workbook.close();
        }
        catch(Exception e){
            
        } 
    }
}

public class TestUtils {
    public static void main(String[] args) {
       String fileName = "data.xls";
       XLSWritableUtils utils = new XLSWritableUtils(fileName);
       utils.createSheet("employee", 0);

       utils.close();
    }
}

Run TestUtils, it creates file “data.xls” and sheet name “employee”.

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