public static boolean isPureDigital(String str) {
if (str == null || "".equals(str)){
return false;
}
Pattern p;
Matcher m;
p = Pattern.compile("[0-9]*");
m = p.matcher(str);
if (m.matches()){
return true;
}else{
return false;
}
}
原文:https://www.cnblogs.com/fshblog/p/11352324.html