How do I combine multiple Excel files into one in Java?

Combine Multiple Excel Files into One using Java

1. Create an instance of the Workbook class with first source file.
2. Create an instance of the Workbook class with second source file.
3. Repeat above step for combining more than two files.
4. Call the combine() method with second source file instance.

Is there an easy way to combine multiple Excel spreadsheets?

The easiest method to merge Excel spreadsheets is to simply take the entire sheet and copy it from one workbook to another. To do this, start off by opening both Excel workbooks. Then, switch to the workbook that you want to copy several sheets from.

How do I combine Excel workbooks into one?

To merge sheets into a brand new workbook, just right-click on the worksheet tab, select “Move or copy” and then choose “(New Book)” from the “To” drop-down.

How do you copy one Excel file to another Excel file using Java?

Get the specific worksheet from workbook using get() method. Add a new blank sheet to the workbook using add() method. Copy the original worksheet to the new sheet using copyFrom() method. Use saveToFile() method to save the changes to another file.

How do you read all Excel files in a folder in Java?

Reading XLSX File

1. import java.io.File;
2. import java.io.FileInputStream;
3. import java.util.Iterator;
4. import org.apache.poi.ss.usermodel.Cell;
5. import org.apache.poi.ss.usermodel.Row;
6. import org.apache.poi.xssf.usermodel.XSSFSheet;
7. import org.apache.poi.xssf.usermodel.XSSFWorkbook;
8. public class XLSXReaderExample.

How do I combine two Excel spreadsheets into one column?

Combine tables in Excel by column headers

1. On your Excel ribbon, go to the Ablebits tab > Merge group, and click the Combine Sheets button:
2. Select all the worksheets you want to merge into one.
3. Choose the columns you want to combine, Order ID and Seller in this example:
4. Select additional options, if needed.

How do I copy a sheet in Excel using Apache POI?

Copy Data From One Excel To Another Using Apache POI

1. // Step #1 : Locate path and file name of target and output excel.
2. // Step #2 : Creating sheets with the same name as appearing in target workbook.
3. // Step #4 : Write all the sheets in the new Workbook using FileOutStream Object (Step 3 is mentioned below)