字符串的首字母大小写转换

/**
 *  首字母转小写
 * @param name
 * @return
 */
public static String toLowerCaseFirstOne(String name){
    if(Character.isLowerCase(name.charAt(0))) {
        return name;
    } else {
        return (new StringBuilder()).append(Character.toLowerCase(name.charAt(0))).append(s.substring(1)).toString();
    }
}

/**
 *  首字母转大写
 * @param name
 * @return
 */
public static String toUpperCaseFirstOne(String name){
    if(Character.isUpperCase(name.charAt(0))) {
        return name;
    } else {
        return (new StringBuilder()).append(Character.toUpperCase(name.charAt(0))).append(s.substring(1)).toString();
    }
}

/**
 *   字符串的首字母大写转换  
 * @param name
 * @return
 */
public static String captureName(String name) {
    if (name == null || "".equals(name)) {
        return name;
    }

    char[] cs = name.toCharArray();
    // 根据ASCII表，小写字母在97到122之间
    if (97 <= cs[0] && cs[0] <= 122 ) {
        cs[0]-=32;
        return String.valueOf(cs);
    }
    return name;
 }
 
/**
 *   字符串的首字母小写转换  
 * @param name
 * @return
 */
public static String captureName(String name) {
     if (name == null || "".equals(name)) {
         return name;
     }
     char[] cs = name.toCharArray();
     // 根据ASCII表，大写字母在65到90之间
     if (65 <= cs[0] && cs[0] <= 90 ) {
         cs[0]+=32;
         return String.valueOf(cs);
     }
     return name;
}