java实现每个单词首字母大写

    /**
     * 每个单词第一个字母大写
     * @param str
     * @return
     */
    public static String toUpperFirstCode(String str) {
        String[] strs = str.split(" ");
        StringBuilder sb = new StringBuilder();
        for (String strTmp : strs) {
            char[] ch = strTmp.toCharArray();
            if (ch[0] >= 'a' && ch[0] <= 'z') {
                ch[0] = (char) (ch[0] - 32);
            }
            String strT = new String(ch);
            sb.append(strT).append(" ");
        }
        return sb.toString().trim();
    }