java中计算字符串长度的方法及u4E00与u9FBB的认识

public static int getCharLength(String content) {
int count = 0;
for (int i = 0, len = content.length(); i < len; ++i) {
if ('\u4E00' <= content.charAt(i) && '\u9FBB' >= content.charAt(i)) {
count++;
}
}
return content.length()+count;
}