import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;
import java.io.IOException;
public class ReadExcelFile {
public static void main(String[] args) {
try {
FileInputStream file = new FileInputStream("path/to/excel.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();
}
workbook.close();
file.close();
} 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 WriteExcelFile {
public static void main(String[] args) {
Workbook workbook = new XSSFWorkbook();
Sheet sheet = workbook.createSheet("Sheet1");
Row row = sheet.createRow(0);
Cell cell1 = row.createCell(0);
cell1.setCellValue("Hello");
Cell cell2 = row.createCell(1);
cell2.setCellValue("World");
try {
FileOutputStream file = new FileOutputStream("path/to/excel.xlsx");
workbook.write(file);
workbook.close();
file.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
