將任意字符串轉成金額模式

private static String toNewMoney(String money1) {
		String money = money1;
		String newMoney = "";
		if(money.charAt(0)=='-'){
			money = money.substring(1, money.length());
			int length = money.length();
			int toEndLength = money.length()-money.indexOf('.');
			System.out.println(toEndLength);
			if (money.indexOf(".") != -1 && length > 6) {
					for (int i = length - toEndLength-1, j = 1; i >= 0; i--) {
						newMoney = money.charAt(i) + newMoney;
						if (j % 3 == 0 && i != 0) {
							newMoney = "," + newMoney;
							j = 1;
						} else {
							j++;
						}
					}
					newMoney += money.substring(money.indexOf("."), money.length());
					return "-"+newMoney;
			}
			if (money.indexOf(".") == -1) {
				if (length > 3) {
					for (int i = length - 1, j = 1; i >= 0; i--) {
						newMoney = money.charAt(i) + newMoney;
						if (j % 3 == 0 && i != 0) {
							newMoney = "," + newMoney;
							j = 1;
						} else {
							j++;
						}
					}
				}
				return newMoney;
			}
		}else{
			int length = money.length();
			int toEndLength = money.length()-money.indexOf('.');
			System.out.println(toEndLength);
			if (money.indexOf(".") != -1 && length > 6) {
					for (int i = length - toEndLength-1, j = 1; i >= 0; i--) {
						newMoney = money.charAt(i) + newMoney;
						if (j % 3 == 0 && i != 0) {
							newMoney = "," + newMoney;
							j = 1;
						} else {
							j++;
						}
					}
					newMoney += money.substring(money.indexOf("."), money.length());
				return newMoney;
			}
			if (money.indexOf(".") == -1) {
				if (length > 3) {
					for (int i = length - 1, j = 1; i >= 0; i--) {
						newMoney = money.charAt(i) + newMoney;
						if (j % 3 == 0 && i != 0) {
							newMoney = "," + newMoney;
							j = 1;
						} else {
							j++;
						}
					}
				}
				return newMoney;
			}
		}
		return money;
	}