public class DomainValidator extends java.lang.Object
Domain name validation routines.
This validator provides methods for validating Internet domain names and top-level domains.
Domain names are evaluated according to the standards RFC1034, section 3, and RFC1123, section 2.1. No accomodation is provided for the specialized needs of other applications; if the domain name has been URL-encoded, for example, validation will fail even though the equivalent plaintext version of the same name would have passed.
Validation is also provided for top-level domains (TLDs) as defined and maintained by the Internet Assigned Numbers Authority (IANA):
.arpa, etc.).com, .org, etc.).us, .uk, .cn, etc.)(NOTE: This class does not provide IP address lookup for domain names or methods to ensure that a given domain name matches a specific IP; see java.net.InetAddress for that functionality.)
| Type | Name and description | 
|---|---|
| static DomainValidator | getInstance()Returns the singleton instance of this validator. | 
| boolean | isValid(java.lang.String domain)Returns true if the specified Stringparses
 as a valid domain name with a recognized top-level domain. | 
| boolean | isValidCountryCodeTld(java.lang.String ccTld)Returns true if the specified Stringmatches any
 IANA-defined country code top-level domain. | 
| boolean | isValidGenericTld(java.lang.String gTld)Returns true if the specified Stringmatches any
 IANA-defined generic top-level domain. | 
| boolean | isValidInfrastructureTld(java.lang.String iTld)Returns true if the specified Stringmatches any
 IANA-defined infrastructure top-level domain. | 
| boolean | isValidTld(java.lang.String tld)Returns true if the specified Stringmatches any
 IANA-defined top-level domain. | 
| Methods inherited from class | Name | 
|---|---|
| class java.lang.Object | java.lang.Object#wait(long, int), java.lang.Object#wait(long), java.lang.Object#wait(), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll() | 
Returns the singleton instance of this validator.
 Returns true if the specified String parses
 as a valid domain name with a recognized top-level domain.
 The parsing is case-sensitive.
     
domain -  the parameter to check for domain name syntax Returns true if the specified String matches any
 IANA-defined country code top-level domain. Leading dots are
 ignored if present. The search is case-sensitive.
     
ccTld -  the parameter to check for country code TLD status Returns true if the specified String matches any
 IANA-defined generic top-level domain. Leading dots are ignored
 if present. The search is case-sensitive.
     
gTld -  the parameter to check for generic TLD status Returns true if the specified String matches any
 IANA-defined infrastructure top-level domain. Leading dots are
 ignored if present. The search is case-sensitive.
     
iTld -  the parameter to check for infrastructure TLD status Returns true if the specified String matches any
 IANA-defined top-level domain. Leading dots are ignored if present.
 The search is case-sensitive.
     
tld -  the parameter to check for TLD status