将一字符串第一个字母转化成大写

Question

循环，然后Character.toUpperCase(str.charAt(0));

Answer 1

    public static String[] capitalize(String[] strs) {
        int strsLen;
        if (strs == null || (strsLen = strs.length) == 0) {
            return null;
        }
         
        for(int i=0;i<strs.length;i++)
        {
            strs[i] = new StringBuffer(strsLen)
                        .append(Character.toTitleCase(strs[i].charAt(0)))
                        .append(strs[i].substring(1)).toString();
        }
        return strs;
   }