<dependencies>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
</dependencies>
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;
import java.io.IOException;
public class ExcelReaderExample {
public static void main(String[] args) {
try (FileInputStream file = new FileInputStream("path/to/excel/file.xlsx");
Workbook workbook = new XSSFWorkbook(file)) {
Sheet sheet = workbook.getSheetAt(0);
for (Row row : sheet) {
for (Cell cell : row) {
CellType cellType = cell.getCellType();
if (cellType == CellType.STRING) {
System.out.print(cell.getStringCellValue() + "\t");
} else if (cellType == CellType.NUMERIC) {
System.out.print(cell.getNumericCellValue() + "\t");
}
}
System.out.println();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileOutputStream;
import java.io.IOException;
public class ExcelWriterExample {
public static void main(String[] args) {
try (Workbook workbook = new XSSFWorkbook();
FileOutputStream file = new FileOutputStream("path/to/excel/file.xlsx")) {
Sheet sheet = workbook.createSheet("Sheet1");
Row headerRow = sheet.createRow(0);
Cell headerCell = headerRow.createCell(0);
headerCell.setCellValue("Name");
Row dataRow = sheet.createRow(1);
Cell dataCell = dataRow.createCell(0);
dataCell.setCellValue("John Doe");
workbook.write(file);
} catch (IOException e) {
e.printStackTrace();
}
}
}
