Validator

java.lang.Object
- com.liferay.portal.kernel.util.Validator

```
public class Validator
extends java.lang.Object
```
Provides utility methods related to data validation and format checking.

Author:

Brian Wing Shun Chan, Alysa Carver

Constructor Summary

Constructors
Constructor and Description

Validator()

Constructors
Constructor and Description
`Validator()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`equalsSorted(boolean[] booleanArray1, boolean[] booleanArray2)` Returns `true` if the boolean arrays are equal.
`static boolean`	`equalsSorted(byte[] byteArray1, byte[] byteArray2)` Returns `true` if the byte arrays are equal.
`static boolean`	`equalsSorted(char[] charArray1, char[] charArray2)` Returns `true` if the char arrays are equal.
`static boolean`	`equalsSorted(double[] doubleArray1, double[] doubleArray2)` Returns `true` if the double arrays are equal.
`static boolean`	`equalsSorted(float[] floatArray1, float[] floatArray2)` Returns `true` if the float arrays are equal.
`static boolean`	`equalsSorted(int[] intArray1, int[] intArray2)` Returns `true` if the int arrays are equal.
`static boolean`	`equalsSorted(long[] longArray1, long[] longArray2)` Returns `true` if the long arrays are equal.
`static boolean`	`equalsSorted(java.lang.Object[] objArray1, java.lang.Object[] objArray2)` Returns `true` if the object arrays are equal.
`static boolean`	`equalsSorted(short[] shortArray1, short[] shortArray2)` Returns `true` if the short arrays are equal.
`static boolean`	`isAddress(java.lang.String address)` Returns `true` if the string is an email address.
`static boolean`	`isAlphanumericName(java.lang.String name)` Returns `true` if the string is an alphanumeric name, meaning it contains nothing but English letters, numbers, and spaces.
`static boolean`	`isAscii(char c)` Returns `true` if the character is in the ASCII character set.
`static boolean`	`isBlank(java.lang.String s)`
`static boolean`	`isBoolean(java.lang.String value)`
`static boolean`	`isChar(char c)` Returns `true` if the character is an upper or lower case English letter.
`static boolean`	`isChar(java.lang.String s)` Returns `true` if string consists only of upper and lower case English letters.
`static boolean`	`isContent(java.lang.String s)` Returns `true` if the string contains content.
`static boolean`	`isDate(int month, int day, int year)` Returns `true` if the date is valid in the Gregorian calendar.
`static boolean`	`isDigit(char c)` Returns `true` if the character is a digit between 0 and 9 (inclusive).
`static boolean`	`isDigit(java.lang.String s)` Returns `true` if the string consists of only digits between 0 and 9 (inclusive).
`static boolean`	`isDomain(java.lang.String domainName)` Returns `true` if the string is a valid domain name.
`static boolean`	`isEmailAddress(java.lang.String emailAddress)` Returns `true` if the string is a valid email address.
`static boolean`	`isEmailAddressSpecialChar(char c)` Returns `true` if the character is a special character in an email address.
`static boolean`	`isFileExtension(java.lang.String fileExtension)` Returns `true` if the file extension is valid.
`static boolean`	`isFileName(java.lang.String name)`
`static boolean`	`isFilePath(java.lang.String path, boolean parentDirAllowed)`
`static boolean`	`isGregorianDate(int month, int day, int year)` Returns `true` if the date is valid in the Gregorian calendar.
`static boolean`	`isHex(java.lang.String s)` Returns `true` if the string is a hexidecimal number.
`static boolean`	`isHostName(java.lang.String name)` Returns `true` if the string is a valid host name.
`static boolean`	`isHTML(java.lang.String s)` Returns `true` if the string is an HTML document.
`static boolean`	`isIPAddress(java.lang.String ipAddress)` Returns `true` if the string is a valid IPv4 or IPv6 IP address.
`static boolean`	`isIPv4Address(java.lang.String ipAddress)` Returns `true` if the string is a valid IPv4 IP address.
`static boolean`	`isIPv6Address(java.lang.String ipAddress)` Returns `true` if the string is a valid IPv6 IP address.
`static boolean`	`isJulianDate(int month, int day, int year)` Returns `true` if the date is valid in the Julian calendar.
`static boolean`	`isLUHN(java.lang.String number)` Returns `true` if the string contains a valid number according to the Luhn algorithm, commonly used to validate credit card numbers.
`static boolean`	`isName(java.lang.String name)` Returns `true` if the string is a name, meaning it contains nothing but English letters and spaces.
`static boolean`	`isNotNull(java.lang.Long l)` Returns `true` if the long number object is not `null`, meaning it is neither a `null` reference or zero.
`static boolean`	`isNotNull(java.lang.Object object)` Returns `true` if the object is not `null`, using the rules from `isNotNull(Long)` or `isNotNull(String)` if the object is one of these types.
`static boolean`	`isNotNull(java.lang.String s)` Returns `true` if the string is not `null`, meaning it is not a `null` reference, an empty string, whitespace, or the string "`null`", with or without leading or trailing whitespace.
`static boolean`	`isNull(java.lang.Long l)` Returns `true` if the long number object is `null`, meaning it is either a `null` reference or zero.
`static boolean`	`isNull(java.lang.Object object)` Returns `true` if the object is `null`, using the rules from `isNull(Long)` or `isNull(String)` if the object is one of these types.
`static boolean`	`isNull(java.lang.String s)` Returns `true` if the string is `null`, meaning it is a `null` reference, an empty string, whitespace, or the string "`null`", with or without leading or trailing whitespace.
`static boolean`	`isNumber(java.lang.String number)` Returns `true` if the string is a decimal integer number, meaning it contains nothing but decimal digits.
`static boolean`	`isPassword(java.lang.String password)` Returns `true` if the string is a valid password, meaning it is at least four characters long and contains only letters and decimal digits.
`static boolean`	`isPhoneNumber(java.lang.String phoneNumber)` Returns `true` if the string is a valid phone number.
`static boolean`	`isUri(java.lang.String uri)`
`static boolean`	`isUrl(java.lang.String url)` Returns `true` if the string is a valid URL based on the rules in `URL`.
`static boolean`	`isUrl(java.lang.String url, boolean acceptRootRelative)` Returns `true` if the string is a valid URL based on the rules in `URL`.
`static boolean`	`isVariableName(java.lang.String variableName)` Returns `true` if the string is a valid variable name in Java.
`static boolean`	`isVariableTerm(java.lang.String s)` Returns `true` if the string is a valid variable term, meaning it begins with "[$" and ends with "$]".
`static boolean`	`isWhitespace(char c)` Returns `true` if the character is whitespace, meaning it is either the `null` character '0' or whitespace according to `Character.isWhitespace(char)`.
`static boolean`	`isXml(java.lang.String s)` Returns `true` if the string is an XML document.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Validator
```
public Validator()
```
- Method Detail
  - equalsSorted
```
public static boolean equalsSorted(boolean[] booleanArray1,
                                   boolean[] booleanArray2)
```
    Returns true if the boolean arrays are equal.
    
    Parameters:
    
    booleanArray1 - the first boolean array
    
    booleanArray2 - the second boolean array
    
    Returns:
    
    true if the booleans arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(byte[] byteArray1,
                                   byte[] byteArray2)
```
    Returns true if the byte arrays are equal.
    
    Parameters:
    
    byteArray1 - the first byte array
    
    byteArray2 - the second byte array
    
    Returns:
    
    true if the byte arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(char[] charArray1,
                                   char[] charArray2)
```
    Returns true if the char arrays are equal.
    
    Parameters:
    
    charArray1 - the first char array
    
    charArray2 - the second char array
    
    Returns:
    
    true if the char arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(double[] doubleArray1,
                                   double[] doubleArray2)
```
    Returns true if the double arrays are equal.
    
    Parameters:
    
    doubleArray1 - the first double array
    
    doubleArray2 - the second double array
    
    Returns:
    
    true if the double arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(float[] floatArray1,
                                   float[] floatArray2)
```
    Returns true if the float arrays are equal.
    
    Parameters:
    
    floatArray1 - the first float array
    
    floatArray2 - the second char array
    
    Returns:
    
    true if the float arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(int[] intArray1,
                                   int[] intArray2)
```
    Returns true if the int arrays are equal.
    
    Parameters:
    
    intArray1 - the first int array
    
    intArray2 - the second int array
    
    Returns:
    
    true if the int arrays are equal; false otherwise
  - equalsSorted
```
public static boolean equalsSorted(long[] longArray1,
                                   long[] longArray2)
```
    Returns true if the long arrays are equal.
    
    Parameters:
    
    longArray1 - the first long array
    
    longArray2 - the second long array
    
    Returns:
    
    true if the long arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(java.lang.Object[] objArray1,
                                   java.lang.Object[] objArray2)
```
    Returns true if the object arrays are equal.
    
    Parameters:
    
    objArray1 - the first object array
    
    objArray2 - the second object array
    
    Returns:
    
    true if the object arrays are equal; falseotherwise
  - equalsSorted
```
public static boolean equalsSorted(short[] shortArray1,
                                   short[] shortArray2)
```
    Returns true if the short arrays are equal.
    
    Parameters:
    
    shortArray1 - the first short array
    
    shortArray2 - the second short array
    
    Returns:
    
    true if the short arrays are equal; falseotherwise
  - isAddress
```
public static boolean isAddress(java.lang.String address)
```
    Returns true if the string is an email address. The only requirements are that the string consist of two parts separated by an @ symbol, and that it contain no whitespace.
    
    Parameters:
    
    address - the string to check
    
    Returns:
    
    true if the string is an email address; false otherwise
  - isAlphanumericName
```
public static boolean isAlphanumericName(java.lang.String name)
```
    Returns true if the string is an alphanumeric name, meaning it contains nothing but English letters, numbers, and spaces.
    
    Parameters:
    
    name - the string to check
    
    Returns:
    
    true if the string is an Alphanumeric name; false otherwise
  - isAscii
```
public static boolean isAscii(char c)
```
    Returns true if the character is in the ASCII character set. This includes characters with integer values between 32 and 126 (inclusive).
    
    Parameters:
    
    c - the character to check
    
    Returns:
    
    true if the character is in the ASCII character set; false otherwise
  - isBlank
```
public static boolean isBlank(java.lang.String s)
```
  - isBoolean
```
public static boolean isBoolean(java.lang.String value)
```
  - isChar
```
public static boolean isChar(char c)
```
    Returns true if the character is an upper or lower case English letter.
    
    Parameters:
    
    c - the character to check
    
    Returns:
    
    true if the character is an upper or lower case English letter; false otherwise
  - isChar
```
public static boolean isChar(java.lang.String s)
```
    Returns true if string consists only of upper and lower case English letters.
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string consists only of upper and lower case English letters
  - isContent
```
public static boolean isContent(java.lang.String s)
```
    Returns true if the string contains content. The only requirement is that it contain content that is not whitespace.
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string contains content; false otherwise
  - isDate
```
public static boolean isDate(int month,
                             int day,
                             int year)
```
    Returns true if the date is valid in the Gregorian calendar.
    
    Parameters:
    
    month - the month to check
    
    day - the day to check
    
    year - the year to check
    
    Returns:
    
    true if the date is valid in the Gregorian calendar; false otherwise
  - isDigit
```
public static boolean isDigit(char c)
```
    Returns true if the character is a digit between 0 and 9 (inclusive).
    
    Parameters:
    
    c - the character to check
    
    Returns:
    
    true if the character is a digit between 0 and 9 (inclusive); false otherwise
  - isDigit
```
public static boolean isDigit(java.lang.String s)
```
    Returns true if the string consists of only digits between 0 and 9 (inclusive).
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string consists of only digits between 0 and 9 (inclusive); false otherwise
  - isDomain
```
public static boolean isDomain(java.lang.String domainName)
```
    Returns true if the string is a valid domain name. See RFC-1034 (section 3), RFC-1123 (section 2.1), and RFC-952 (section B. Lexical grammar).
    
    Parameters:
    
    domainName - the string to check
    
    Returns:
    
    true if the string is a valid domain name; false otherwise
  - isEmailAddress
```
public static boolean isEmailAddress(java.lang.String emailAddress)
```
    Returns true if the string is a valid email address.
    
    Parameters:
    
    emailAddress - the string to check
    
    Returns:
    
    true if the string is a valid email address; false otherwise
  - isEmailAddressSpecialChar
```
public static boolean isEmailAddressSpecialChar(char c)
```
    Returns true if the character is a special character in an email address.
    
    Parameters:
    
    c - the character to check
    
    Returns:
    
    true if the character is a special character in an email address; false otherwise
  - isFileExtension
```
public static boolean isFileExtension(java.lang.String fileExtension)
```
    Returns true if the file extension is valid.
    
    Parameters:
    
    fileExtension - string to check
    
    Returns:
    
    true if the extension is valid; false otherwise
  - isFileName
```
public static boolean isFileName(java.lang.String name)
```
  - isFilePath
```
public static boolean isFilePath(java.lang.String path,
                                 boolean parentDirAllowed)
```
  - isGregorianDate
```
public static boolean isGregorianDate(int month,
                                      int day,
                                      int year)
```
    Returns true if the date is valid in the Gregorian calendar.
    
    Parameters:
    
    month - the month (0-based, meaning 0 for January)
    
    day - the day of the month
    
    year - the year
    
    Returns:
    
    true if the date is valid; false otherwise
  - isHex
```
public static boolean isHex(java.lang.String s)
```
    Returns true if the string is a hexidecimal number. At present the only requirement is that the string is not null; it does not actually check the format of the string.
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string is a hexidecimal number; false otherwise
    
    See Also:
    
    isNull(String)
  - isHostName
```
public static boolean isHostName(java.lang.String name)
```
    Returns true if the string is a valid host name.
    
    Parameters:
    
    name - the string to check
    
    Returns:
    
    true if the string is a valid host name; false otherwise
  - isHTML
```
public static boolean isHTML(java.lang.String s)
```
    Returns true if the string is an HTML document. The only requirement is that it contain the opening and closing html tags.
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string is an HTML document; false otherwise
  - isIPAddress
```
public static boolean isIPAddress(java.lang.String ipAddress)
```
    Returns true if the string is a valid IPv4 or IPv6 IP address.
    
    Parameters:
    
    ipAddress - the string to check
    
    Returns:
    
    true if the string is a valid IPv4 or IPv6 IP address; false otherwise
  - isIPv4Address
```
public static boolean isIPv4Address(java.lang.String ipAddress)
```
    Returns true if the string is a valid IPv4 IP address.
    
    Parameters:
    
    ipAddress - the string to check
    
    Returns:
    
    true if the string is a valid IPv4 IP address; false otherwise
  - isIPv6Address
```
public static boolean isIPv6Address(java.lang.String ipAddress)
```
    Returns true if the string is a valid IPv6 IP address.
    
    Parameters:
    
    ipAddress - the string to check
    
    Returns:
    
    true if the string is a valid IPv6 IP address; false otherwise
  - isJulianDate
```
public static boolean isJulianDate(int month,
                                   int day,
                                   int year)
```
    Returns true if the date is valid in the Julian calendar.
    
    Parameters:
    
    month - the month (0-based, meaning 0 for January)
    
    day - the day of the month
    
    year - the year
    
    Returns:
    
    true if the date is valid in the Julian calendar; false otherwise
  - isLUHN
```
public static boolean isLUHN(java.lang.String number)
```
    Returns true if the string contains a valid number according to the Luhn algorithm, commonly used to validate credit card numbers.
    
    Parameters:
    
    number - the string to check
    
    Returns:
    
    true if the string contains a valid number according to the Luhn algorithm; false otherwise
  - isName
```
public static boolean isName(java.lang.String name)
```
    Returns true if the string is a name, meaning it contains nothing but English letters and spaces.
    
    Parameters:
    
    name - the string to check
    
    Returns:
    
    true if the string is a name; false otherwise
  - isNotNull
```
public static boolean isNotNull(java.lang.Long l)
```
    Returns true if the long number object is not null, meaning it is neither a null reference or zero.
    
    Parameters:
    
    l - the long number object to check
    
    Returns:
    
    true if the long number object is not null; false otherwise
  - isNotNull
```
public static boolean isNotNull(java.lang.Object object)
```
    Returns true if the object is not null, using the rules from isNotNull(Long) or isNotNull(String) if the object is one of these types.
    
    Parameters:
    
    object - the object to check
    
    Returns:
    
    true if the object is not null; false otherwise
  - isNotNull
```
public static boolean isNotNull(java.lang.String s)
```
    Returns true if the string is not null, meaning it is not a null reference, an empty string, whitespace, or the string "null", with or without leading or trailing whitespace.
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string is not null; false otherwise
  - isNull
```
public static boolean isNull(java.lang.Long l)
```
    Returns true if the long number object is null, meaning it is either a null reference or zero.
    
    Parameters:
    
    l - the long number object to check
    
    Returns:
    
    true if the long number object is null; false otherwise
  - isNull
```
public static boolean isNull(java.lang.Object object)
```
    Returns true if the object is null, using the rules from isNull(Long) or isNull(String) if the object is one of these types.
    
    Parameters:
    
    object - the object to check
    
    Returns:
    
    true if the object is null; false otherwise
  - isNull
```
public static boolean isNull(java.lang.String s)
```
    Returns true if the string is null, meaning it is a null reference, an empty string, whitespace, or the string "null", with or without leading or trailing whitespace.
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string is null; false otherwise
  - isNumber
```
public static boolean isNumber(java.lang.String number)
```
    Returns true if the string is a decimal integer number, meaning it contains nothing but decimal digits.
    
    Parameters:
    
    number - the string to check
    
    Returns:
    
    true if the string is a decimal integer number; false otherwise
  - isPassword
```
public static boolean isPassword(java.lang.String password)
```
    Returns true if the string is a valid password, meaning it is at least four characters long and contains only letters and decimal digits.
    
    Parameters:
    
    password - the string to check
    
    Returns:
    
    true if the string is a valid password; false otherwise
  - isPhoneNumber
```
public static boolean isPhoneNumber(java.lang.String phoneNumber)
```
    Returns true if the string is a valid phone number. The only requirement is that there are decimal digits in the string; length and format are not checked.
    
    Parameters:
    
    phoneNumber - the string to check
    
    Returns:
    
    true if the string is a valid phone number; false otherwise
  - isUri
```
public static boolean isUri(java.lang.String uri)
```
  - isUrl
```
public static boolean isUrl(java.lang.String url)
```
    Returns true if the string is a valid URL based on the rules in URL.
    
    Parameters:
    
    url - the string to check
    
    Returns:
    
    true if the string is a valid URL; false otherwise
  - isUrl
```
public static boolean isUrl(java.lang.String url,
                            boolean acceptRootRelative)
```
    Returns true if the string is a valid URL based on the rules in URL. This method can also validate root relative URLs.
    
    Parameters:
    
    url - the string to check
    
    acceptRootRelative - whether a root relative URL should be accepted
    
    Returns:
    
    true if the string is a valid URL; false otherwise
  - isVariableName
```
public static boolean isVariableName(java.lang.String variableName)
```
    Returns true if the string is a valid variable name in Java.
    
    Parameters:
    
    variableName - the string to check
    
    Returns:
    
    true if the string is a valid variable name in Java; false otherwise
  - isVariableTerm
```
public static boolean isVariableTerm(java.lang.String s)
```
    Returns true if the string is a valid variable term, meaning it begins with "[$" and ends with "$]".
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string is a valid variable term; false otherwise
  - isWhitespace
```
public static boolean isWhitespace(char c)
```
    Returns true if the character is whitespace, meaning it is either the null character '0' or whitespace according to Character.isWhitespace(char).
    
    Parameters:
    
    c - the character to check
    
    Returns:
    
    true if the character is whitespace; false otherwise
  - isXml
```
public static boolean isXml(java.lang.String s)
```
    Returns true if the string is an XML document. The only requirement is that it contain either the xml start tag "".
    
    Parameters:
    
    s - the string to check
    
    Returns:
    
    true if the string is an XML document; false otherwise

Class Validator

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Validator

Method Detail

equalsSorted

equalsSorted

equalsSorted

equalsSorted

equalsSorted

equalsSorted

equalsSorted

equalsSorted

equalsSorted

isAddress

isAlphanumericName

isAscii

isBlank

isBoolean

isChar

isChar

isContent

isDate

isDigit

isDigit

isDomain

isEmailAddress

isEmailAddressSpecialChar

isFileExtension

isFileName

isFilePath

isGregorianDate

isHex

isHostName

isHTML

isIPAddress

isIPv4Address

isIPv6Address

isJulianDate

isLUHN

isName

isNotNull

isNotNull

isNotNull

isNull

isNull

isNull

isNumber

isPassword

isPhoneNumber

isUri

isUrl

isUrl

isVariableName

isVariableTerm

isWhitespace

isXml