java.lang.Object
- org.htmlunit.cyberneko.xerces.util.URI

```
public class URI
extends java.lang.Object
```
A class to represent a Uniform Resource Identifier (URI). This class is designed to handle the parsing of URIs and provide access to the various components (scheme, host, port, userinfo, path, query string and fragment) that may constitute a URI.
Parsing of a URI specification is done according to the URI syntax described in RFC 2396, and amended by RFC 2732.
Every absolute URI consists of a scheme, followed by a colon (':'), followed by a scheme-specific part. For URIs that follow the "generic URI" syntax, the scheme-specific part begins with two slashes ("//") and may be followed by an authority segment (comprised of user information, host, and port), path segment, query segment and fragment. Note that RFC 2396 no longer specifies the use of the parameters segment and excludes the "user:password" syntax as part of the authority segment. If "user:password" appears in a URI, the entire user/password string is stored as userinfo.
For URIs that do not follow the "generic URI" syntax (e.g. mailto), the entire scheme-specific part is treated as the "path" portion of the URI.
Note that, unlike the java.net.URL class, this class does not provide any built-in network access functionality nor does it provide any scheme-specific functionality (for example, it does not know a default port for a specific scheme). Rather, it only knows the grammar and basic set of operations that can be applied to a URI.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`URI.MalformedURIException`	MalformedURIExceptions are thrown in the process of building a URI or setting fields on a URI when an operation would result in an invalid URI specification.

Field Summary

Fields
Modifier and Type	Field	Description
`private static int`	`ASCII_ALPHA_CHARACTERS`	ASCII letter characters
`private static int`	`ASCII_DIGIT_CHARACTERS`	ASCII digit characters
`private static int`	`ASCII_HEX_CHARACTERS`	ASCII hex characters
`private static byte[]`	`fgLookupTable`
`private java.lang.String`	`fragment_`	If specified, stores the fragment for this URI; otherwise null
`private java.lang.String`	`host_`	If specified, stores the host for this URI; otherwise null
`private static int`	`MARK_CHARACTERS`	URI punctuation mark characters: -_.!~*'() - these, combined with alphanumerics, constitute the "unreserved" characters
`private static int`	`MASK_ALPHA_NUMERIC`	Mask for alpha-numeric characters
`private static int`	`MASK_PATH_CHARACTER`	Mask for path characters
`private static int`	`MASK_SCHEME_CHARACTER`	Mask for scheme characters
`private static int`	`MASK_UNRESERVED_MASK`	Mask for unreserved characters
`private static int`	`MASK_URI_CHARACTER`	Mask for URI allowable characters except for %
`private static int`	`MASK_USERINFO_CHARACTER`	Mask for userinfo characters
`private java.lang.String`	`path_`	If specified, stores the path for this URI; otherwise null
`private static int`	`PATH_CHARACTERS`	Path characters
`private int`	`port_`	If specified, stores the port for this URI; otherwise -1
`private java.lang.String`	`queryString_`	If specified, stores the query string for this URI; otherwise null.
`private java.lang.String`	`regAuthority_`	If specified, stores the registry based authority for this URI; otherwise -1
`private static int`	`RESERVED_CHARACTERS`	reserved characters ;/?:@&=+$,[]
`private java.lang.String`	`scheme_`	Stores the scheme (usually the protocol) for this URI.
`private static int`	`SCHEME_CHARACTERS`	scheme can be composed of alphanumerics and these characters: +-.
`private java.lang.String`	`userinfo_`	If specified, stores the userinfo for this URI; otherwise null
`private static int`	`USERINFO_CHARACTERS`	userinfo can be composed of unreserved, escaped and these characters: ;:&=+$,

Constructor Summary

Constructors
Constructor	Description
`URI(java.lang.String uriSpec)`	Construct a new URI from a URI specification string.
`URI(java.lang.String uriSpec, boolean allowNonAbsoluteURI)`	Construct a new URI from a URI specification string.
`URI(java.lang.String scheme, java.lang.String userinfo, java.lang.String host, int port, java.lang.String path, java.lang.String queryString, java.lang.String fragment)`	Construct a new URI that follows the generic URI syntax from its component parts.
`URI(java.lang.String scheme, java.lang.String host, java.lang.String path, java.lang.String queryString, java.lang.String fragment)`	Construct a new URI that follows the generic URI syntax from its component parts.
`URI(URI base, java.lang.String uriSpec)`	Construct a new URI from a base URI and a URI specification string.
`URI(URI base, java.lang.String uriSpec, boolean allowNonAbsoluteURI)`	Construct a new URI from a base URI and a URI specification string.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`absolutize(URI base)`	Absolutize URI with given base URI.
`boolean`	`equals(java.lang.Object test)`	Determines if the passed-in Object is equivalent to this URI.
`java.lang.String`	`getFragment()`	Get the fragment for this URI.
`java.lang.String`	`getHost()`	Get the host for this URI.
`java.lang.String`	`getPath()`	Get the path for this URI.
`int`	`getPort()`	Get the port for this URI.
`java.lang.String`	`getQueryString()`	Get the query string for this URI.
`java.lang.String`	`getRegBasedAuthority()`	Get the registry based authority for this URI.
`java.lang.String`	`getScheme()`	Get the scheme for this URI.
`java.lang.String`	`getSchemeSpecificPart()`	Get the scheme-specific part for this URI (everything following the scheme and the first colon).
`java.lang.String`	`getUserinfo()`	Get the userinfo for this URI.
`private void`	`initialize(URI other)`	Initialize all fields of this URI from another URI.
`private void`	`initialize(URI base, java.lang.String uriSpec)`	Initializes this URI from a base URI and a URI specification string.
`private void`	`initialize(URI base, java.lang.String uriSpec, boolean allowNonAbsoluteURI)`	Initializes this URI from a base URI and a URI specification string.
`private boolean`	`initializeAuthority(java.lang.String uriSpec)`	Initialize the authority (either server or registry based) for this URI from a URI string spec.
`private void`	`initializePath(java.lang.String uriSpec, int nStartIndex)`	Initialize the path for this URI from a URI string spec.
`private void`	`initializeScheme(java.lang.String uriSpec)`	Initialize the scheme for this URI from a URI string spec.
`boolean`	`isAbsoluteURI()`	Returns whether this URI represents an absolute URI.
`private static boolean`	`isAlpha(char ch)`	Determine whether a char is an alphabetic character: a-z or A-Z
`private static boolean`	`isAlphanum(char ch)`	Determine whether a char is an alphanumeric: 0-9, a-z or A-Z
`private static boolean`	`isConformantSchemeName(java.lang.String scheme)`	Determine whether a scheme conforms to the rules for a scheme name.
`private static boolean`	`isDigit(char chr)`	Determine whether a char is a digit.
`boolean`	`isGenericURI()`	Get the indicator as to whether this URI uses the "generic URI" syntax.
`private static boolean`	`isHex(char ch)`	Determine whether a character is a hexadecimal character.
`private static boolean`	`isPathCharacter(char ch)`	Determine whether a char is a path character.
`private static boolean`	`isSchemeCharacter(char ch)`	Determine whether a char is a scheme character.
`private static boolean`	`isURICharacter(char ch)`	Determine whether a char is a URI character (reserved or unreserved, not including '%' for escaped octets).
`private static boolean`	`isURIString(java.lang.String uric)`	Determine whether a given string contains only URI characters (also called "uric" in RFC 2396).
`private static boolean`	`isUserinfoCharacter(char ch)`	Determine whether a char is a userinfo character.
`private boolean`	`isValidRegistryBasedAuthority(java.lang.String authority)`	Determines whether the given string is a registry based authority.
`private boolean`	`isValidServerBasedAuthority(java.lang.String host, int port, java.lang.String userinfo)`	Determines whether the components host, port, and user info are valid as a server authority.
`static boolean`	`isWellFormedAddress(java.lang.String address)`	Determine whether a string is syntactically capable of representing a valid IPv4 address, IPv6 reference or the domain name of a network host.
`static boolean`	`isWellFormedIPv4Address(java.lang.String address)`	Determines whether a string is an IPv4 address as defined by RFC 2373, and under the further constraint that it must be a 32-bit address.
`static boolean`	`isWellFormedIPv6Reference(java.lang.String address)`	Determines whether a string is an IPv6 reference as defined by RFC 2732, where IPv6address is defined in RFC 2373.
`private static int`	`scanHexSequence(java.lang.String address, int index, int end, int[] counter)`	Helper method for isWellFormedIPv6Reference which scans the hex sequences of an IPv6 address.
`void`	`setFragment(java.lang.String fragment)`	Set the fragment for this URI.
`void`	`setHost(java.lang.String host)`	Set the host for this URI.
`void`	`setPath(java.lang.String path)`	Set the path for this URI.
`void`	`setPort(int port)`	Set the port for this URI.
`void`	`setQueryString(java.lang.String queryString)`	Set the query string for this URI.
`void`	`setScheme(java.lang.String scheme)`	Set the scheme for this URI.
`void`	`setUserinfo(java.lang.String userinfo)`	Set the userinfo for this URI.
`java.lang.String`	`toString()`	Get the URI as a string specification.

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

- Field Detail
  - fgLookupTable
```
private static final byte[] fgLookupTable
```
  - RESERVED_CHARACTERS
```
private static final int RESERVED_CHARACTERS
```
    reserved characters ;/?:@&=+$,[]
    
    See Also:
    
    Constant Field Values
  - MARK_CHARACTERS
```
private static final int MARK_CHARACTERS
```
    URI punctuation mark characters: -_.!~*'() - these, combined with alphanumerics, constitute the "unreserved" characters
    
    See Also:
    
    Constant Field Values
  - SCHEME_CHARACTERS
```
private static final int SCHEME_CHARACTERS
```
    scheme can be composed of alphanumerics and these characters: +-.
    
    See Also:
    
    Constant Field Values
  - USERINFO_CHARACTERS
```
private static final int USERINFO_CHARACTERS
```
    userinfo can be composed of unreserved, escaped and these characters: ;:&=+$,
    
    See Also:
    
    Constant Field Values
  - ASCII_ALPHA_CHARACTERS
```
private static final int ASCII_ALPHA_CHARACTERS
```
    ASCII letter characters
    
    See Also:
    
    Constant Field Values
  - ASCII_DIGIT_CHARACTERS
```
private static final int ASCII_DIGIT_CHARACTERS
```
    ASCII digit characters
    
    See Also:
    
    Constant Field Values
  - ASCII_HEX_CHARACTERS
```
private static final int ASCII_HEX_CHARACTERS
```
    ASCII hex characters
    
    See Also:
    
    Constant Field Values
  - PATH_CHARACTERS
```
private static final int PATH_CHARACTERS
```
    Path characters
    
    See Also:
    
    Constant Field Values
  - MASK_ALPHA_NUMERIC
```
private static final int MASK_ALPHA_NUMERIC
```
    Mask for alpha-numeric characters
    
    See Also:
    
    Constant Field Values
  - MASK_UNRESERVED_MASK
```
private static final int MASK_UNRESERVED_MASK
```
    Mask for unreserved characters
    
    See Also:
    
    Constant Field Values
  - MASK_URI_CHARACTER
```
private static final int MASK_URI_CHARACTER
```
    Mask for URI allowable characters except for %
    
    See Also:
    
    Constant Field Values
  - MASK_SCHEME_CHARACTER
```
private static final int MASK_SCHEME_CHARACTER
```
    Mask for scheme characters
    
    See Also:
    
    Constant Field Values
  - MASK_USERINFO_CHARACTER
```
private static final int MASK_USERINFO_CHARACTER
```
    Mask for userinfo characters
    
    See Also:
    
    Constant Field Values
  - MASK_PATH_CHARACTER
```
private static final int MASK_PATH_CHARACTER
```
    Mask for path characters
    
    See Also:
    
    Constant Field Values
  - scheme_
```
private java.lang.String scheme_
```
    Stores the scheme (usually the protocol) for this URI.
  - userinfo_
```
private java.lang.String userinfo_
```
    If specified, stores the userinfo for this URI; otherwise null
  - host_
```
private java.lang.String host_
```
    If specified, stores the host for this URI; otherwise null
  - port_
```
private int port_
```
    If specified, stores the port for this URI; otherwise -1
  - regAuthority_
```
private java.lang.String regAuthority_
```
    If specified, stores the registry based authority for this URI; otherwise -1
  - path_
```
private java.lang.String path_
```
    If specified, stores the path for this URI; otherwise null
  - queryString_
```
private java.lang.String queryString_
```
    If specified, stores the query string for this URI; otherwise null.
  - fragment_
```
private java.lang.String fragment_
```
    If specified, stores the fragment for this URI; otherwise null
- Constructor Detail
  - URI
```
public URI(java.lang.String uriSpec)
    throws URI.MalformedURIException
```
    Construct a new URI from a URI specification string. If the specification follows the "generic URI" syntax, (two slashes following the first colon), the specification will be parsed accordingly - setting the scheme, userinfo, host,port, path, query string and fragment fields as necessary. If the specification does not follow the "generic URI" syntax, the specification is parsed into a scheme and scheme-specific part (stored as the path) only.
    
    Parameters:
    
    uriSpec - the URI specification string (cannot be null or empty)
    
    Throws:
    
    URI.MalformedURIException - if p_uriSpec violates any syntax rules
  - URI
```
public URI(java.lang.String uriSpec,
           boolean allowNonAbsoluteURI)
    throws URI.MalformedURIException
```
    Construct a new URI from a URI specification string. If the specification follows the "generic URI" syntax, (two slashes following the first colon), the specification will be parsed accordingly - setting the scheme, userinfo, host,port, path, query string and fragment fields as necessary. If the specification does not follow the "generic URI" syntax, the specification is parsed into a scheme and scheme-specific part (stored as the path) only. Construct a relative URI if boolean is assigned to "true" and p_uriSpec is not valid absolute URI, instead of throwing an exception.
    
    Parameters:
    
    uriSpec - the URI specification string (cannot be null or empty)
    
    allowNonAbsoluteURI - true to permit non-absolute URIs, false otherwise.
    
    Throws:
    
    URI.MalformedURIException - if p_uriSpec violates any syntax rules
  - URI
```
public URI(URI base,
           java.lang.String uriSpec)
    throws URI.MalformedURIException
```
    Construct a new URI from a base URI and a URI specification string. The URI specification string may be a relative URI.
    
    Parameters:
    
    base - the base URI (cannot be null if p_uriSpec is null or empty)
    
    uriSpec - the URI specification string (cannot be null or empty if p_base is null)
    
    Throws:
    
    URI.MalformedURIException - if p_uriSpec violates any syntax rules
  - URI
```
public URI(URI base,
           java.lang.String uriSpec,
           boolean allowNonAbsoluteURI)
    throws URI.MalformedURIException
```
    Construct a new URI from a base URI and a URI specification string. The URI specification string may be a relative URI. Construct a relative URI if boolean is assigned to "true" and p_uriSpec is not valid absolute URI and p_base is null instead of throwing an exception.
    
    Parameters:
    
    base - the base URI (cannot be null if p_uriSpec is null or empty)
    
    uriSpec - the URI specification string (cannot be null or empty if p_base is null)
    
    allowNonAbsoluteURI - true to permit non-absolute URIs, false otherwise.
    
    Throws:
    
    URI.MalformedURIException - if p_uriSpec violates any syntax rules
  - URI
```
public URI(java.lang.String scheme,
           java.lang.String host,
           java.lang.String path,
           java.lang.String queryString,
           java.lang.String fragment)
    throws URI.MalformedURIException
```
    Construct a new URI that follows the generic URI syntax from its component parts. Each component is validated for syntax and some basic semantic checks are performed as well. See the individual setter methods for specifics.
    
    Parameters:
    
    scheme - the URI scheme (cannot be null or empty)
    
    host - the hostname, IPv4 address or IPv6 reference for the URI
    
    path - the URI path - if the path contains '?' or '#', then the query string and/or fragment will be set from the path; however, if the query and fragment are specified both in the path and as separate parameters, an exception is thrown
    
    queryString - the URI query string (cannot be specified if path is null)
    
    fragment - the URI fragment (cannot be specified if path is null)
    
    Throws:
    
    URI.MalformedURIException - if any of the parameters violates syntax rules or semantic rules
  - URI
```
public URI(java.lang.String scheme,
           java.lang.String userinfo,
           java.lang.String host,
           int port,
           java.lang.String path,
           java.lang.String queryString,
           java.lang.String fragment)
    throws URI.MalformedURIException
```
    Construct a new URI that follows the generic URI syntax from its component parts. Each component is validated for syntax and some basic semantic checks are performed as well. See the individual setter methods for specifics.
    
    Parameters:
    
    scheme - the URI scheme (cannot be null or empty)
    
    userinfo - the URI userinfo (cannot be specified if host is null)
    
    host - the hostname, IPv4 address or IPv6 reference for the URI
    
    port - the URI port (may be -1 for "unspecified"; cannot be specified if host is null)
    
    path - the URI path - if the path contains '?' or '#', then the query string and/or fragment will be set from the path; however, if the query and fragment are specified both in the path and as separate parameters, an exception is thrown
    
    queryString - the URI query string (cannot be specified if path is null)
    
    fragment - the URI fragment (cannot be specified if path is null)
    
    Throws:
    
    URI.MalformedURIException - if any of the parameters violates syntax rules or semantic rules
- Method Detail
  - initialize
```
private void initialize(URI other)
```
    Initialize all fields of this URI from another URI.
    
    Parameters:
    
    other - the URI to copy (cannot be null)
  - initialize
```
private void initialize(URI base,
                        java.lang.String uriSpec,
                        boolean allowNonAbsoluteURI)
                 throws URI.MalformedURIException
```
    Initializes this URI from a base URI and a URI specification string. See RFC 2396 Section 4 and Appendix B for specifications on parsing the URI and Section 5 for specifications on resolving relative URIs and relative paths.
    
    Parameters:
    
    base - the base URI (may be null if p_uriSpec is an absolute URI)
    
    uriSpec - the URI spec string which may be an absolute or relative URI (can only be null/empty if p_base is not null)
    
    allowNonAbsoluteURI - true to permit non-absolute URIs, in case of relative URI, false otherwise.
    
    Throws:
    
    URI.MalformedURIException - if p_base is null and p_uriSpec is not an absolute URI or if p_uriSpec violates syntax rules
  - initialize
```
private void initialize(URI base,
                        java.lang.String uriSpec)
                 throws URI.MalformedURIException
```
    Initializes this URI from a base URI and a URI specification string. See RFC 2396 Section 4 and Appendix B for specifications on parsing the URI and Section 5 for specifications on resolving relative URIs and relative paths.
    
    Parameters:
    
    base - the base URI (may be null if p_uriSpec is an absolute URI)
    
    uriSpec - the URI spec string which may be an absolute or relative URI (can only be null/empty if p_base is not null)
    
    Throws:
    
    URI.MalformedURIException - if p_base is null and p_uriSpec is not an absolute URI or if p_uriSpec violates syntax rules
  - absolutize
```
public void absolutize(URI base)
```
    Absolutize URI with given base URI.
    
    Parameters:
    
    base - base URI for absolutization
  - initializeScheme
```
private void initializeScheme(java.lang.String uriSpec)
                       throws URI.MalformedURIException
```
    Initialize the scheme for this URI from a URI string spec.
    
    Parameters:
    
    uriSpec - the URI specification (cannot be null)
    
    Throws:
    
    URI.MalformedURIException - if URI does not have a conformant scheme
  - initializeAuthority
```
private boolean initializeAuthority(java.lang.String uriSpec)
```
    Initialize the authority (either server or registry based) for this URI from a URI string spec.
    
    Parameters:
    
    uriSpec - the URI specification (cannot be null)
    
    Returns:
    
    true if the given string matched server or registry based authority
  - isValidServerBasedAuthority
```
private boolean isValidServerBasedAuthority(java.lang.String host,
                                            int port,
                                            java.lang.String userinfo)
```
    Determines whether the components host, port, and user info are valid as a server authority.
    
    Parameters:
    
    host - the host component of authority
    
    port - the port number component of authority
    
    userinfo - the user info component of authority
    
    Returns:
    
    true if the given host, port, and userinfo compose a valid server authority
  - isValidRegistryBasedAuthority
```
private boolean isValidRegistryBasedAuthority(java.lang.String authority)
```
    Determines whether the given string is a registry based authority.
    
    Parameters:
    
    authority - the authority component of a URI
    
    Returns:
    
    true if the given string is a registry based authority
  - initializePath
```
private void initializePath(java.lang.String uriSpec,
                            int nStartIndex)
                     throws URI.MalformedURIException
```
    Initialize the path for this URI from a URI string spec.
    
    Parameters:
    
    uriSpec - the URI specification (cannot be null)
    
    nStartIndex - the index to begin scanning from
    
    Throws:
    
    URI.MalformedURIException - if p_uriSpec violates syntax rules
  - getScheme
```
public java.lang.String getScheme()
```
    Get the scheme for this URI.
    
    Returns:
    
    the scheme for this URI
  - getSchemeSpecificPart
```
public java.lang.String getSchemeSpecificPart()
```
    Get the scheme-specific part for this URI (everything following the scheme and the first colon). See RFC 2396 Section 5.2 for spec.
    
    Returns:
    
    the scheme-specific part for this URI
  - getUserinfo
```
public java.lang.String getUserinfo()
```
    Get the userinfo for this URI.
    
    Returns:
    
    the userinfo for this URI (null if not specified).
  - getHost
```
public java.lang.String getHost()
```
    Get the host for this URI.
    
    Returns:
    
    the host for this URI (null if not specified).
  - getPort
```
public int getPort()
```
    Get the port for this URI.
    
    Returns:
    
    the port for this URI (-1 if not specified).
  - getRegBasedAuthority
```
public java.lang.String getRegBasedAuthority()
```
    Get the registry based authority for this URI.
    
    Returns:
    
    the registry based authority (null if not specified).
  - getPath
```
public java.lang.String getPath()
```
    Get the path for this URI. Note that the value returned is the path only and does not include the query string or fragment.
    
    Returns:
    
    the path for this URI.
  - getQueryString
```
public java.lang.String getQueryString()
```
    Get the query string for this URI.
    
    Returns:
    
    the query string for this URI. Null is returned if there was no "?" in the URI spec, empty string if there was a "?" but no query string following it.
  - getFragment
```
public java.lang.String getFragment()
```
    Get the fragment for this URI.
    
    Returns:
    
    the fragment for this URI. Null is returned if there was no "#" in the URI spec, empty string if there was a "#" but no fragment following it.
  - setScheme
```
public void setScheme(java.lang.String scheme)
               throws URI.MalformedURIException
```
    Set the scheme for this URI. The scheme is converted to lowercase before it is set.
    
    Parameters:
    
    scheme - the scheme for this URI (cannot be null)
    
    Throws:
    
    URI.MalformedURIException - if p_scheme is not a conformant scheme name
  - setUserinfo
```
public void setUserinfo(java.lang.String userinfo)
                 throws URI.MalformedURIException
```
    Set the userinfo for this URI. If a non-null value is passed in and the host value is null, then an exception is thrown.
    
    Parameters:
    
    userinfo - the userinfo for this URI
    
    Throws:
    
    URI.MalformedURIException - if p_userinfo contains invalid characters
  - setHost
```
public void setHost(java.lang.String host)
             throws URI.MalformedURIException
```
    Set the host for this URI. If null is passed in, the userinfo field is also set to null and the port is set to -1.
    
    Note: This method overwrites registry based authority if it previously existed in this URI.
    
    Parameters:
    
    host - the host for this URI
    
    Throws:
    
    URI.MalformedURIException - if p_host is not a valid IP address or DNS hostname.
  - setPort
```
public void setPort(int port)
             throws URI.MalformedURIException
```
    Set the port for this URI. -1 is used to indicate that the port is not specified, otherwise valid port numbers are between 0 and 65535. If a valid port number is passed in and the host field is null, an exception is thrown.
    
    Parameters:
    
    port - the port number for this URI
    
    Throws:
    
    URI.MalformedURIException - if p_port is not -1 and not a valid port number
  - setPath
```
public void setPath(java.lang.String path)
             throws URI.MalformedURIException
```
    Set the path for this URI. If the supplied path is null, then the query string and fragment are set to null as well. If the supplied path includes a query string and/or fragment, these fields will be parsed and set as well. Note that, for URIs following the "generic URI" syntax, the path specified should start with a slash. For URIs that do not follow the generic URI syntax, this method sets the scheme-specific part.
    
    Parameters:
    
    path - the path for this URI (may be null)
    
    Throws:
    
    URI.MalformedURIException - if p_path contains invalid characters
  - setQueryString
```
public void setQueryString(java.lang.String queryString)
                    throws URI.MalformedURIException
```
    Set the query string for this URI. A non-null value is valid only if this is an URI conforming to the generic URI syntax and the path value is not null.
    
    Parameters:
    
    queryString - the query string for this URI
    
    Throws:
    
    URI.MalformedURIException - if p_queryString is not null and this URI does not conform to the generic URI syntax or if the path is null
  - setFragment
```
public void setFragment(java.lang.String fragment)
                 throws URI.MalformedURIException
```
    Set the fragment for this URI. A non-null value is valid only if this is a URI conforming to the generic URI syntax and the path value is not null.
    
    Parameters:
    
    fragment - the fragment for this URI
    
    Throws:
    
    URI.MalformedURIException - if p_fragment is not null and this URI does not conform to the generic URI syntax or if the path is null
  - equals
```
public boolean equals(java.lang.Object test)
```
    Determines if the passed-in Object is equivalent to this URI.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    
    test - the Object to test for equality.
    
    Returns:
    
    true if p_test is a URI with all values equal to this URI, false otherwise
  - toString
```
public java.lang.String toString()
```
    Get the URI as a string specification. See RFC 2396 Section 5.2.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    the URI string specification
  - isGenericURI
```
public boolean isGenericURI()
```
    Get the indicator as to whether this URI uses the "generic URI" syntax.
    
    Returns:
    
    true if this URI uses the "generic URI" syntax, false otherwise
  - isAbsoluteURI
```
public boolean isAbsoluteURI()
```
    Returns whether this URI represents an absolute URI.
    
    Returns:
    
    true if this URI represents an absolute URI, false otherwise
  - isConformantSchemeName
```
private static boolean isConformantSchemeName(java.lang.String scheme)
```
    Determine whether a scheme conforms to the rules for a scheme name. A scheme is conformant if it starts with an alphanumeric, and contains only alphanumerics, '+','-' and '.'.
    
    Parameters:
    
    scheme - the scheme
    
    Returns:
    
    true if the scheme is conformant, false otherwise
  - isWellFormedAddress
```
public static boolean isWellFormedAddress(java.lang.String address)
```
    Determine whether a string is syntactically capable of representing a valid IPv4 address, IPv6 reference or the domain name of a network host. A valid IPv4 address consists of four decimal digit groups separated by a '.'. Each group must consist of one to three digits. See RFC 2732 Section 3, and RFC 2373 Section 2.2, for the definition of IPv6 references. A hostname consists of domain labels (each of which must begin and end with an alphanumeric but may contain '-') separated & by a '.'. See RFC 2396 Section 3.2.2.
    
    Parameters:
    
    address - the address
    
    Returns:
    
    true if the string is a syntactically valid IPv4 address, IPv6 reference or hostname
  - isWellFormedIPv4Address
```
public static boolean isWellFormedIPv4Address(java.lang.String address)
```
    Determines whether a string is an IPv4 address as defined by RFC 2373, and under the further constraint that it must be a 32-bit address. Though not expressed in the grammar, in order to satisfy the 32-bit address constraint, each segment of the address cannot be greater than 255 (8 bits of information).
    
    IPv4address = 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT
    
    Parameters:
    
    address - the address
    
    Returns:
    
    true if the string is a syntactically valid IPv4 address
  - isWellFormedIPv6Reference
```
public static boolean isWellFormedIPv6Reference(java.lang.String address)
```
    Determines whether a string is an IPv6 reference as defined by RFC 2732, where IPv6address is defined in RFC 2373. The IPv6 address is parsed according to Section 2.2 of RFC 2373, with the additional constraint that the address be composed of 128 bits of information.
    
    IPv6reference = "[" IPv6address "]"
    
    Note: The BNF expressed in RFC 2373 Appendix B does not accurately describe section 2.2, and was in fact removed from RFC 3513, the successor of RFC 2373.
    
    Parameters:
    
    address - the address
    
    Returns:
    
    true if the string is a syntactically valid IPv6 reference
  - scanHexSequence
```
private static int scanHexSequence(java.lang.String address,
                                   int index,
                                   int end,
                                   int[] counter)
```
    Helper method for isWellFormedIPv6Reference which scans the hex sequences of an IPv6 address. It returns the index of the next character to scan in the address, or -1 if the string cannot match a valid IPv6 address.
    
    Parameters:
    
    address - the string to be scanned
    
    index - the beginning index (inclusive)
    
    end - the ending index (exclusive)
    
    counter - a counter for the number of 16-bit sections read in the address
    
    Returns:
    
    the index of the next character to scan, or -1 if the string cannot match a valid IPv6 address
  - isDigit
```
private static boolean isDigit(char chr)
```
    Determine whether a char is a digit.
    
    Returns:
    
    true if the char is betweeen '0' and '9', false otherwise
  - isHex
```
private static boolean isHex(char ch)
```
    Determine whether a character is a hexadecimal character.
    
    Returns:
    
    true if the char is betweeen '0' and '9', 'a' and 'f' or 'A' and 'F', false otherwise
  - isAlpha
```
private static boolean isAlpha(char ch)
```
    Determine whether a char is an alphabetic character: a-z or A-Z
    
    Returns:
    
    true if the char is alphabetic, false otherwise
  - isAlphanum
```
private static boolean isAlphanum(char ch)
```
    Determine whether a char is an alphanumeric: 0-9, a-z or A-Z
    
    Returns:
    
    true if the char is alphanumeric, false otherwise
  - isURICharacter
```
private static boolean isURICharacter(char ch)
```
    Determine whether a char is a URI character (reserved or unreserved, not including '%' for escaped octets).
    
    Returns:
    
    true if the char is a URI character, false otherwise
  - isSchemeCharacter
```
private static boolean isSchemeCharacter(char ch)
```
    Determine whether a char is a scheme character.
    
    Returns:
    
    true if the char is a scheme character, false otherwise
  - isUserinfoCharacter
```
private static boolean isUserinfoCharacter(char ch)
```
    Determine whether a char is a userinfo character.
    
    Returns:
    
    true if the char is a userinfo character, false otherwise
  - isPathCharacter
```
private static boolean isPathCharacter(char ch)
```
    Determine whether a char is a path character.
    
    Returns:
    
    true if the char is a path character, false otherwise
  - isURIString
```
private static boolean isURIString(java.lang.String uric)
```
    Determine whether a given string contains only URI characters (also called "uric" in RFC 2396). uric consist of all reserved characters, unreserved characters and escaped characters.
    
    Returns:
    
    true if the string is comprised of uric, false otherwise

Class URI

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

fgLookupTable

RESERVED_CHARACTERS

MARK_CHARACTERS

SCHEME_CHARACTERS

USERINFO_CHARACTERS

ASCII_ALPHA_CHARACTERS

ASCII_DIGIT_CHARACTERS

ASCII_HEX_CHARACTERS

PATH_CHARACTERS

MASK_ALPHA_NUMERIC

MASK_UNRESERVED_MASK

MASK_URI_CHARACTER

MASK_SCHEME_CHARACTER

MASK_USERINFO_CHARACTER

MASK_PATH_CHARACTER

scheme_

userinfo_

host_

port_

regAuthority_

path_

queryString_

fragment_

Constructor Detail

URI

URI

URI

URI

URI

URI

Method Detail

initialize

initialize

initialize

absolutize

initializeScheme

initializeAuthority

isValidServerBasedAuthority

isValidRegistryBasedAuthority

initializePath

getScheme

getSchemeSpecificPart

getUserinfo

getHost

getPort

getRegBasedAuthority

getPath

getQueryString

getFragment

setScheme

setUserinfo

setHost

setPort

setPath

setQueryString

setFragment

equals

toString

isGenericURI

isAbsoluteURI

isConformantSchemeName

isWellFormedAddress

isWellFormedIPv4Address

isWellFormedIPv6Reference

scanHexSequence

isDigit

isHex

isAlpha

isAlphanum

isURICharacter

isSchemeCharacter

isUserinfoCharacter

isPathCharacter