public static boolean isMobileNO(String mobiles) { 
    boolean flag = false; 
    try { 
        //13********* ,15********,18*********  
        Pattern p = Pattern 
                .compile("^((13[0-9])|(15[^4,//D])|(18[0,5-9]))//d{8}$"); 
        Matcher m = p.matcher(mobiles); 
        flag = m.matches(); 
    } catch (Exception e) { 
        flag = false; 
    } 
    return flag; 
}