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## javax.xml.namespace
Class QName

    java.lang.Object
      javax.xml.namespace.QName

All Implemented Interfaces:
  java.io.Serializable

public class QName
extends java.lang.Object
implements java.io.Serializable

`QName` class represents the value of a qualified name as specified in XML Schema Part2: Datatypes specification.

The value of a QName contains a namespaceURI, a localPart and a prefix. The localPart provides the local part of the qualified name. The namespaceURI is a URI reference identifying the namespace.

Version:
  1.1
See Also:
  Serialized Form

Constructor Summary
`QName(java.lang.String localPart)` Constructor for the QName.
`QName(java.lang.String namespaceURI, java.lang.String localPart)` Constructor for the QName.
`QName(java.lang.String namespaceURI, java.lang.String localPart, java.lang.String prefix)` Constructor for the QName.

Method Summary
`boolean` | `equals(java.lang.Object obj)` Tests this QName for equality with another object.
`java.lang.String` | `getLocalPart()` Gets the local part for this QName.
`java.lang.String` | `getNamespaceURI()` Gets the namespace URI for this QName.
`java.lang.String` | `getPrefix()` Gets the prefix for this QName.
`int` | `hashCode()` Returns a hash code value for this QName object.
`java.lang.String` | `toString()` Returns a string representation of this QName.
`static QName` | `valueOf(java.lang.String s)` Returns a QName holding the value of the specified String.

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

Constructor Detail

### QName

    public QName(java.lang.String localPart)

  Constructor for the QName.

Parameters:
  `localPart` - local part of the QName

### QName

    public QName(java.lang.String namespaceURI,
                 java.lang.String localPart)

  Constructor for the QName.

Parameters:
  `namespaceURI` - namespace URI for the QName
  `localPart` - local part of the QName.

### QName

    public QName(java.lang.String namespaceURI,
                 java.lang.String localPart,
                 java.lang.String prefix)

  Constructor for the QName.

Parameters:
  `namespaceURI` - Namespace URI for the QName
  `localPart` - Local part of the QName.
  `prefix` - Prefix of the QName.

Method Detail

### getNamespaceURI

    public java.lang.String getNamespaceURI()

  Gets the namespace URI for this QName.

  Returns:
    namespace URI

### getLocalPart

    public java.lang.String getLocalPart()

  Gets the local part for this QName.

  Returns:
    the local part

### getPrefix

    public java.lang.String getPrefix()

  Gets the prefix for this QName.

  Returns:
    the prefix

### toString

    public java.lang.String toString()

  Returns a string representation of this QName.

  Returns:
    a string representation of the QName

### equals

    public boolean equals(java.lang.Object obj)

  Tests this QName for equality with another object.

  If the given object is not a QName or is null then this method returns `false`.

  For two QNames to be considered equal requires that both localPart and namespaceURI must be equal. This method uses `String.equals` to check equality of localPart and namespaceURI. Any class that extends QName is required to satisfy this equality contract.

  This method satisfies the general contract of the `Object.equals` method.

  Parameters:
    `obj` - the reference object with which to compare
  Returns:
    `true` if the given object is identical to this QName: `false` otherwise.

### valueOf

    public static QName valueOf(java.lang.String s)

  Returns a QName holding the value of the specified String.

  The string must be in the form returned by the QName.toString() method, i.e. "{namespaceURI}localPart", with the "{namespaceURI}" part being optional.

  This method doesn't do a full validation of the resulting QName. In particular, it doesn't check that the resulting namespace URI is a legal URI (per RFC 2396 and RFC 2732), nor that the resulting local part is a legal NCName per the XML Namespaces specification.

  Parameters:
    `s` - the string to be parsed
  Returns:
    QName corresponding to the given String
  Throws:
    `java.lang.IllegalArgumentException` - If the specified String cannot be parsed as a QName

### hashCode

    public int hashCode()

  Returns a hash code value for this QName object. The hash code is based on both the localPart and namespaceURI parts of the QName. This method satisfies the general contract of the `Object.hashCode` method.

  Returns:
    a hash code value for this Qname object

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