如何在apache poi中为DataBar添加负值？

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileOutputStream;
import java.io.IOException;

public class DataBarExample {
    public static void main(String[] args) throws IOException {
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("DataBar with Negative Values");

        // 创建一个包含正负值的示例数据
        Row row = sheet.createRow(0);
        row.createCell(0).setCellValue(10);
        row.createCell(1).setCellValue(-5);
        row.createCell(2).setCellValue(20);

        // 获取样式工厂
        DataFormat dataFormat = workbook.createDataFormat();

        // 创建一个数据条样式
        CellStyle dataBarStyle = dataFormat.createDataBar().setNegativeColor(IndexedColors.RED.getIndex()).createCellStyle();

        // 设置数据条的最小值和最大值
        dataBarStyle.setDataBarMin(0);
        dataBarStyle.setDataBarMax(30);

        // 应用数据条样式到单元格
        for (int i = 0; i < 3; i++) {
            Cell cell = row.getCell(i);
            if (cell != null) {
                cell.setCellStyle(dataBarStyle);
            }
        }

        // 写入文件
        try (FileOutputStream fileOut = new FileOutputStream("DataBarExample.xlsx")) {
            workbook.write(fileOut);
        }

        workbook.close();
    }
}