Question

java操作poi的excel表格的线条怎么变为黑色

Answer 1

XSSFCellStyle style;
style.setTopBorderColor(HSSFColor.BLACK.index);
style.setBottomBorderColor(HSSFColor.BLACK.index);
style.setLeftBorderColor(HSSFColor.BLACK.index);
style.setRightBorderColor(HSSFColor.BLACK.index);
XSSFCell cell;
cell.setCellStyle(style);