求一个数数的个位数,十位数,百位数及千位:
int num = 53;
int g = (num / 1) % 10; //个位
int s = (num / 10) % 10; //十位
int b = (num / 100) % 10; //百位
int b = (num / 1000) % 10; //千位
1 amount = String.valueOf(this.dealAmountByXXQ(new BigDecimal(amount), new BigDecimal(100), new BigDecimal(900),5));
2
3 /**
4 * 如果是整百金额就减paramSub
5 * @param amount
6 * @param start
7 * @param end
8 * @return
9 */
10 public static BigDecimal dealAmountByXXQ(BigDecimal amount, BigDecimal start, BigDecimal end,Integer paramSub) {
11 if (amount.compareTo(start) == -1) {
12 return amount;
13 }
14 if (amount.compareTo(end) == 1) {
15 return amount;
16 }
17 int amt = amount.intValue();
18 int sw = (amt / 10) % 10;
19 int gw = (amt / 1) % 10;
20 if (gw == 0 && sw == 0) {
21 amt -=paramSub;
22 }
23 return new BigDecimal(amt);
24 }
// 判断是否整百或整百倍数:
int a = 200;
if(a%100 == 0) System.out.println("整百、整百的倍数");