java.lang.Object
- com.google.common.net.HostSpecifier

```
@GwtIncompatible
public final class HostSpecifier
extends java.lang.Object
```
A syntactically valid host specifier, suitable for use in a URI. This may be either a numeric IP address in IPv4 or IPv6 notation, or a domain name.
Because this class is intended to represent host specifiers which can reasonably be used in a URI, the domain name case is further restricted to include only those domain names which end in a recognized public suffix; see InternetDomainName.isPublicSuffix() for details.
Note that no network lookups are performed by any HostSpecifier methods. No attempt is made to verify that a provided specifier corresponds to a real or accessible host. Only syntactic and pattern-based checks are performed.
If you know that a given string represents a numeric IP address, use InetAddresses to obtain and manipulate a InetAddress instance from it rather than using this class. Similarly, if you know that a given string represents a domain name, use InternetDomainName rather than this class.

Since:

5.0

Author:

Craig Berry

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object other)`
`static HostSpecifier`	`from(java.lang.String specifier)`	Attempts to return a `HostSpecifier` for the given string, throwing an exception if parsing fails.
`static HostSpecifier`	`fromValid(java.lang.String specifier)`	Returns a `HostSpecifier` built from the provided `specifier`, which is already known to be valid.
`int`	`hashCode()`
`static boolean`	`isValid(java.lang.String specifier)`	Determines whether `specifier` represents a valid `HostSpecifier` as described in the documentation for `fromValid(String)`.
`java.lang.String`	`toString()`	Returns a string representation of the host specifier suitable for inclusion in a URI.

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

- Method Detail
  - fromValid
```
public static HostSpecifier fromValid(java.lang.String specifier)
```
    Returns a HostSpecifier built from the provided specifier, which is already known to be valid. If the specifier might be invalid, use from(String) instead.
    The specifier must be in one of these formats:
    
    A domain name, like google.com
    A IPv4 address string, like 127.0.0.1
    An IPv6 address string with or without brackets, like [2001:db8::1] or 2001:db8::1
    Throws:
    
    java.lang.IllegalArgumentException - if the specifier is not valid.
  - from
```
@CanIgnoreReturnValue
public static HostSpecifier from(java.lang.String specifier)
                          throws java.text.ParseException
```
    Attempts to return a HostSpecifier for the given string, throwing an exception if parsing fails. Always use this method in preference to fromValid(String) for a specifier that is not already known to be valid.
    
    Throws:
    
    java.text.ParseException - if the specifier is not valid.
  - isValid
```
public static boolean isValid(java.lang.String specifier)
```
    Determines whether specifier represents a valid HostSpecifier as described in the documentation for fromValid(String).
  - equals
```
public boolean equals(@CheckForNull
                      java.lang.Object other)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Returns a string representation of the host specifier suitable for inclusion in a URI. If the host specifier is a domain name, the string will be normalized to all lower case. If the specifier was an IPv6 address without brackets, brackets are added so that the result will be usable in the host part of a URI.
    
    Overrides:
    
    toString in class java.lang.Object

Class HostSpecifier

Method Summary

Methods inherited from class java.lang.Object

Method Detail

fromValid

from

isValid

equals

hashCode

toString