poiを利用してExcelファイルの読み込み¶

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;

public class ExcelReader {
    public static void main(String[] args) {
        String filePath = "sample.xlsx";
        
        try (FileInputStream fis = new FileInputStream(filePath);
             Workbook workbook = new XSSFWorkbook(fis)) {

            Sheet sheet = workbook.getSheetAt(0);

            for (int i = 0; i <= sheet.getLastRowNum(); i++) {
                Row row = sheet.getRow(i);
                if (row != null) {
                    // セルの処理
                }
            }
        }
    }
}