java生成一定位数的随机数_峪幽兰 的博客_java 随机个位数

private String getRandomNum(int num) throws BaseException {
		StringBuilder sb = new StringBuilder();
		Random random = new Random();
		for (int i = 0; i < num; i++) {
			sb.append(random.nextInt(10));
		}
		return sb.toString();
	}private String getRandomNum(int num) throws Bas