用Java写一个将list集合写入excel，并且关键字标红的demo

好的，以下是Java写一个将list集合写入excel，并且关键字标红的demo：

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelWriterDemo {
    
    public static void writeListToExcel(List<String> list, String filePath, String keyword) throws IOException {
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("Sheet1");
        Font font = workbook.createFont();
        font.setColor(IndexedColors.RED.getIndex());
        CellStyle cellStyle = workbook.createCellStyle();
        cellStyle.setFont(font);
        int rownum = 0;
        for (String str : list) {
            Row row = sheet.createRow(rownum++);
            Cell cell = row.createCell(0);
            if (str.contains(keyword)) {
                cell.setCellValue(str);
                cell.setCellStyle(cellStyle);
            } else {
                cell.setCellValue(str);
            }
        }
        FileOutputStream out = new FileOutputStream(filePath);
        workbook.write(out);
        out.close();
        workbook.close();
    }

}

请问，还有什么其他问题吗？