java POI 实现Excel合并单元格

Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet("new sheet");

Row row = sheet.createRow((short) 1);
Cell cell = row.createCell((short) 1);
cell.setCellValue("This is a test of merging");

sheet.addMergedRegion(new CellRangeAddress(
1, //first row (0-based)
1, //last row  (0-based)
1, //first column (0-based)
2  //last column  (0-based)
));
// Write the output to a file
FileOutputStream fileOut = new FileOutputStream("E:\\standarcode\\workbook.xls");
wb.write(fileOut);
fileOut.close();