public static boolean startWith(@Nullable CharSequence s, char c) {
		if (StringUtils.isEmpty(s)) {
			return false;
		}
		return s.charAt(0) == c;
	}
public static boolean startWith ( @ Nullable CharSequence s , char c ) { if ( StringUtils . isEmpty ( s ) ) { return false ; } return s . charAt ( 0 ) == c ; }
判断字符串是否以字母开头

如果字符串为Null或空，返回false