Sign up to join this community. Unicorn Meta Zoo 9: Inet4Address ; import java. Returns true if the specified string is a valid IPv4 address. This might not work for all theoretical valid IP address and this method will be relatively slow than all other alternatives. Notify of new replies to this comment - on. 
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Asked 7 years, 1 month ago. One such method is isInetAddress which checks if the specified string is a valid IP string literal or not. This solution is similar to internal inetadvressvalidator of Apache Commons InetAddressValidator class discussed before. The isValid boolean would be unnecesary if you return immediately when you know the return value. Notify of new replies to this comment - off. Matcher ; import java.
Maven Repository: commons-validator » commons-validator »
The best answers are voted up and rise to the top. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this inetaaddressvalidator the association bonus does not count.
Guava InetAddresses class provides static utility methods pertaining to InetAddress instances. Below regular expression can be used to check for a valid IP Address. Home Questions Tags Users Unanswered. I am the project manager. To contribute, get in touch with us. Would you like to answer one of these unanswered questions instead?
org.apache.commons.validator.routines.InetAddressValidator
An IPv4 address is usually represented in dot-decimal notation, consisting of four decimal numbers separated by dots, each ranging from 0 tosuch as The IP address This library supports IPv4 and IPv6 transparently, so validating either works the same below, and it supports CIDR subnets and other subnet formats as well.
Sean F Sean F 2 2 bronze badges. Please inetaddressvwlidator that above regular expression will fail for " Because of the historical prevalence of IPv4the generic term IP address typically still refers to the addresses defined by IPv4. IPv6 is the successor to the IPv4 and is defined using bits or 16 octets such as Reverse a String with Recursion in Java. This might not work for all theoretical valid IP address and this method will be relatively slow than all other alternatives.
Active 1 year, 5 months ago. Returns true if the specified string is a valid IPv6 address. Returns true if the specified string is a valid IPv4 or IPv6 address. Please note that octal or hexadecimal numbers are not permitted i.
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Please spread the word and help us grow. ESAPI validation routine can also be used which provides the following regular expression. Notify of new replies to this comment - on. Code Review Stack Exchange is a question and answer inetaddrfssvalidator for peer programmer code reviews. Verify if an address is valid:
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