Java生成"年月日"+流水号

 1     private final static String FORMAT_CODE = "0000";
 2     private final static String PRE_CODE = "BM";
 3     @Test
 4     public void FormatCode() {
 5         int count = 1; // 流水号
 6         DecimalFormat dft = new DecimalFormat(FORMAT_CODE);
 7         String code = dft.format(count); // 格式化为四位流水号 code: 0001
 8         SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
 9         String date = sdf.format(new Date()); // 格式化日期 date: 20200724
10         String codeEnd = PRE_CODE + date + code;
11         System.out.println(codeEnd);
12     }

输出结果为 : BM202007240001