Buongiorno a tutti,
ho questo programma, ma quando lo eseguo mi da l'errore in oggetto
codice:
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class SimpleExcelWriterExample {
public static void main(String[] args) throws IOException {
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.createSheet("Java Books");
Object[][] bookData = {
{"Head First Java", "Kathy Serria", 79},
{"Effective Java", "Joshua Bloch", 36},
{"Clean Code", "Robert martin", 42},
{"Thinking in Java", "Bruce Eckel", 35},
};
int rowCount = 0;
for (Object[] aBook : bookData) {
Row row = sheet.createRow(++rowCount);
int columnCount = 0;
for (Object field : aBook) {
Cell cell = row.createCell(++columnCount);
if (field instanceof String) {
cell.setCellValue((String) field);
} else if (field instanceof Integer) {
cell.setCellValue((Integer) field);
}
}
}
try (FileOutputStream outputStream = new FileOutputStream("JavaBooks.xlsx")) {
workbook.write(outputStream);
}
}
}
ho aggiunto la libreria che mi chiede tra le librerie, appunto. Il risultato non cambia. Sapete aiutarmi? Cosa posso fare?