Java Utililty Methods Regex Number Validate

List of utility methods to do Regex Number Validate

  1. HOME
  2. Java
  3. R
  4. Regex Number Validate

Description

The list of methods to do Regex Number Validate are organized into topic(s).

Method

booleanisNum(String str)
is Num 
if ((str == null) || (str.equals(""))) {
    return false;
Pattern pattern = Pattern.compile("[0-9]*");
return pattern.matcher(str).matches();
booleanisNum(String str)
is Num 
if (isBlank(str)) {
    return false;
String regEx = "[\\d]+";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(str);
return m.matches();
booleanisNumber(String data)
Using Regex, find if we have a number in the String 
Matcher m = isNumber.matcher(data);
return m.find();
booleanisNumber(String number)
is Number 
return NUMBER_REG.matcher(number).matches();
booleanisNumber(String s)
Returns true if input string is numeric and false otherwise 
return (_numPattern.matcher(s).matches());
BooleanisNumber(String s)
is Number 
Pattern pa = Pattern.compile("[0-9]*");
Matcher ma = pa.matcher(s);
if (ma.matches()) {
    return true;
return false;
booleanisNumber(String s, boolean[] realnum)
Return TRUE if z is a pure numeric string. 
if (s == null)
    return false;
if (!NUMBER_PATTER.matcher(s).matches())
    return false;
if (realnum != null && realnum.length > 0) {
    realnum[0] = REAL_PATTERN.matcher(s).matches();
return true;
...
booleanisNumber(String str)
is Number 
if (isNull(str)) {
    return false;
Pattern p = Pattern
        .compile(new StringBuilder("[-]?+[0-9]{").append((str.length() == 0 ? 1 : str.length() - 1))
                .append(",").append(str.length()).append("}").toString());
Matcher m = p.matcher(str);
return m.matches();
...
booleanisNumber(String str)
is Number 
boolean res = false;
if (str != null && str.length() > 0) {
    Pattern pattern = Pattern.compile("^\\d+$");
    Matcher m = pattern.matcher(str);
    if (m.find()) {
        res = true;
return res;
booleanisNumber(String str)
Methods Descrip: 
boolean flag = false;
if (str == null || str.equals("")) {
    return false;
Pattern p = Pattern.compile("[0-9]*");
;
Matcher m = p.matcher(str);
;
...