# ProcessingInstruction
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
Summary:[Inherited Constants](https://developer.android.com/reference/org/w3c/dom/ProcessingInstruction#inhconstants)\|[Methods](https://developer.android.com/reference/org/w3c/dom/ProcessingInstruction#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/org/w3c/dom/ProcessingInstruction#inhmethods)
# ProcessingInstruction
`
public
interface
ProcessingInstruction
`
`
implements
`[Node](https://developer.android.com/reference/org/w3c/dom/Node)`
`
|-----------------------------------|
| org.w3c.dom.ProcessingInstruction |
*** ** * ** ***
The`ProcessingInstruction`interface represents a "processing instruction", used in XML as a way to keep processor-specific information in the text of the document.
No lexical check is done on the content of a processing instruction and it is therefore possible to have the character sequence`"?>"`in the content, which is illegal a processing instruction per section 2.6 of \[[XML 1.0](http://www.w3.org/TR/2004/REC-xml-20040204)\]. The presence of this character sequence must generate a fatal error during serialization.
See also the[Document Object Model (DOM) Level 3 Core Specification](http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407).
## Summary
| ### Inherited constants |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| From interface[org.w3c.dom.Node](https://developer.android.com/reference/org/w3c/dom/Node) |---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `short` | [ATTRIBUTE_NODE](https://developer.android.com/reference/org/w3c/dom/Node#ATTRIBUTE_NODE) The node is an`Attr`. | | `short` | [CDATA_SECTION_NODE](https://developer.android.com/reference/org/w3c/dom/Node#CDATA_SECTION_NODE) The node is a`CDATASection`. | | `short` | [COMMENT_NODE](https://developer.android.com/reference/org/w3c/dom/Node#COMMENT_NODE) The node is a`Comment`. | | `short` | [DOCUMENT_FRAGMENT_NODE](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_FRAGMENT_NODE) The node is a`DocumentFragment`. | | `short` | [DOCUMENT_NODE](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_NODE) The node is a`Document`. | | `short` | [DOCUMENT_POSITION_CONTAINED_BY](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_POSITION_CONTAINED_BY) The node is contained by the reference node. | | `short` | [DOCUMENT_POSITION_CONTAINS](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_POSITION_CONTAINS) The node contains the reference node. | | `short` | [DOCUMENT_POSITION_DISCONNECTED](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_POSITION_DISCONNECTED) The two nodes are disconnected. | | `short` | [DOCUMENT_POSITION_FOLLOWING](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_POSITION_FOLLOWING) The node follows the reference node. | | `short` | [DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC) The determination of preceding versus following is implementation-specific. | | `short` | [DOCUMENT_POSITION_PRECEDING](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_POSITION_PRECEDING) The second node precedes the reference node. | | `short` | [DOCUMENT_TYPE_NODE](https://developer.android.com/reference/org/w3c/dom/Node#DOCUMENT_TYPE_NODE) The node is a`DocumentType`. | | `short` | [ELEMENT_NODE](https://developer.android.com/reference/org/w3c/dom/Node#ELEMENT_NODE) The node is an`Element`. | | `short` | [ENTITY_NODE](https://developer.android.com/reference/org/w3c/dom/Node#ENTITY_NODE) The node is an`Entity`. | | `short` | [ENTITY_REFERENCE_NODE](https://developer.android.com/reference/org/w3c/dom/Node#ENTITY_REFERENCE_NODE) The node is an`EntityReference`. | | `short` | [NOTATION_NODE](https://developer.android.com/reference/org/w3c/dom/Node#NOTATION_NODE) The node is a`Notation`. | | `short` | [PROCESSING_INSTRUCTION_NODE](https://developer.android.com/reference/org/w3c/dom/Node#PROCESSING_INSTRUCTION_NODE) The node is a`ProcessingInstruction`. | | `short` | [TEXT_NODE](https://developer.android.com/reference/org/w3c/dom/Node#TEXT_NODE) The node is a`Text`node. | |
| ### Public methods ||
|--------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getData](https://developer.android.com/reference/org/w3c/dom/ProcessingInstruction#getData())`() ` The content of this processing instruction. |
| ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getTarget](https://developer.android.com/reference/org/w3c/dom/ProcessingInstruction#getTarget())`() ` The target of this processing instruction. |
| ` abstract void` | ` `[setData](https://developer.android.com/reference/org/w3c/dom/ProcessingInstruction#setData(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` data) ` The content of this processing instruction. |
| ### Inherited methods |
|-----------------------|---|
| From interface` `[org.w3c.dom.Node](https://developer.android.com/reference/org/w3c/dom/Node)` ` |----------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[appendChild](https://developer.android.com/reference/org/w3c/dom/Node#appendChild(org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` newChild) ` Adds the node`newChild`to the end of the list of children of this node. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[cloneNode](https://developer.android.com/reference/org/w3c/dom/Node#cloneNode(boolean))`(boolean deep) ` Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes. | | ` abstract short` | ` `[compareDocumentPosition](https://developer.android.com/reference/org/w3c/dom/Node#compareDocumentPosition(org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` other) ` Compares the reference node, i.e. | | ` abstract `[NamedNodeMap](https://developer.android.com/reference/org/w3c/dom/NamedNodeMap) | ` `[getAttributes](https://developer.android.com/reference/org/w3c/dom/Node#getAttributes())`() ` A`NamedNodeMap`containing the attributes of this node (if it is an`Element`) or`null`otherwise. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getBaseURI](https://developer.android.com/reference/org/w3c/dom/Node#getBaseURI())`() ` The absolute base URI of this node or`null`if the implementation wasn't able to obtain an absolute URI. | | ` abstract `[NodeList](https://developer.android.com/reference/org/w3c/dom/NodeList) | ` `[getChildNodes](https://developer.android.com/reference/org/w3c/dom/Node#getChildNodes())`() ` A`NodeList`that contains all children of this node. | | ` abstract `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[getFeature](https://developer.android.com/reference/org/w3c/dom/Node#getFeature(java.lang.String,%20java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` feature, `[String](https://developer.android.com/reference/java/lang/String)` version) ` This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in . | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[getFirstChild](https://developer.android.com/reference/org/w3c/dom/Node#getFirstChild())`() ` The first child of this node. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[getLastChild](https://developer.android.com/reference/org/w3c/dom/Node#getLastChild())`() ` The last child of this node. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getLocalName](https://developer.android.com/reference/org/w3c/dom/Node#getLocalName())`() ` Returns the local part of the qualified name of this node. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getNamespaceURI](https://developer.android.com/reference/org/w3c/dom/Node#getNamespaceURI())`() ` The namespace URI of this node, or`null`if it is unspecified (see ). | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[getNextSibling](https://developer.android.com/reference/org/w3c/dom/Node#getNextSibling())`() ` The node immediately following this node. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getNodeName](https://developer.android.com/reference/org/w3c/dom/Node#getNodeName())`() ` The name of this node, depending on its type; see the table above. | | ` abstract short` | ` `[getNodeType](https://developer.android.com/reference/org/w3c/dom/Node#getNodeType())`() ` A code representing the type of the underlying object, as defined above. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getNodeValue](https://developer.android.com/reference/org/w3c/dom/Node#getNodeValue())`() ` The value of this node, depending on its type; see the table above. | | ` abstract `[Document](https://developer.android.com/reference/org/w3c/dom/Document) | ` `[getOwnerDocument](https://developer.android.com/reference/org/w3c/dom/Node#getOwnerDocument())`() ` The`Document`object associated with this node. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[getParentNode](https://developer.android.com/reference/org/w3c/dom/Node#getParentNode())`() ` The parent of this node. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getPrefix](https://developer.android.com/reference/org/w3c/dom/Node#getPrefix())`() ` The namespace prefix of this node, or`null`if it is unspecified. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[getPreviousSibling](https://developer.android.com/reference/org/w3c/dom/Node#getPreviousSibling())`() ` The node immediately preceding this node. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[getTextContent](https://developer.android.com/reference/org/w3c/dom/Node#getTextContent())`() ` This attribute returns the text content of this node and its descendants. | | ` abstract `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[getUserData](https://developer.android.com/reference/org/w3c/dom/Node#getUserData(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` key) ` Retrieves the object associated to a key on a this node. | | ` abstract boolean` | ` `[hasAttributes](https://developer.android.com/reference/org/w3c/dom/Node#hasAttributes())`() ` Returns whether this node (if it is an element) has any attributes. | | ` abstract boolean` | ` `[hasChildNodes](https://developer.android.com/reference/org/w3c/dom/Node#hasChildNodes())`() ` Returns whether this node has any children. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[insertBefore](https://developer.android.com/reference/org/w3c/dom/Node#insertBefore(org.w3c.dom.Node,%20org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` newChild, `[Node](https://developer.android.com/reference/org/w3c/dom/Node)` refChild) ` Inserts the node`newChild`before the existing child node`refChild`. | | ` abstract boolean` | ` `[isDefaultNamespace](https://developer.android.com/reference/org/w3c/dom/Node#isDefaultNamespace(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` namespaceURI) ` This method checks if the specified`namespaceURI`is the default namespace or not. | | ` abstract boolean` | ` `[isEqualNode](https://developer.android.com/reference/org/w3c/dom/Node#isEqualNode(org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` arg) ` Tests whether two nodes are equal. | | ` abstract boolean` | ` `[isSameNode](https://developer.android.com/reference/org/w3c/dom/Node#isSameNode(org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` other) ` Returns whether this node is the same node as the given one. | | ` abstract boolean` | ` `[isSupported](https://developer.android.com/reference/org/w3c/dom/Node#isSupported(java.lang.String,%20java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` feature, `[String](https://developer.android.com/reference/java/lang/String)` version) ` Tests whether the DOM implementation implements a specific feature and that feature is supported by this node, as specified in . | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[lookupNamespaceURI](https://developer.android.com/reference/org/w3c/dom/Node#lookupNamespaceURI(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` prefix) ` Look up the namespace URI associated to the given prefix, starting from this node. | | ` abstract `[String](https://developer.android.com/reference/java/lang/String) | ` `[lookupPrefix](https://developer.android.com/reference/org/w3c/dom/Node#lookupPrefix(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` namespaceURI) ` Look up the prefix associated to the given namespace URI, starting from this node. | | ` abstract void` | ` `[normalize](https://developer.android.com/reference/org/w3c/dom/Node#normalize())`() ` Puts all`Text`nodes in the full depth of the sub-tree underneath this`Node`, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates`Text`nodes, i.e., there are neither adjacent`Text`nodes nor empty`Text`nodes. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[removeChild](https://developer.android.com/reference/org/w3c/dom/Node#removeChild(org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` oldChild) ` Removes the child node indicated by`oldChild`from the list of children, and returns it. | | ` abstract `[Node](https://developer.android.com/reference/org/w3c/dom/Node) | ` `[replaceChild](https://developer.android.com/reference/org/w3c/dom/Node#replaceChild(org.w3c.dom.Node,%20org.w3c.dom.Node))`(`[Node](https://developer.android.com/reference/org/w3c/dom/Node)` newChild, `[Node](https://developer.android.com/reference/org/w3c/dom/Node)` oldChild) ` Replaces the child node`oldChild`with`newChild`in the list of children, and returns the`oldChild`node. | | ` abstract void` | ` `[setNodeValue](https://developer.android.com/reference/org/w3c/dom/Node#setNodeValue(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` nodeValue) ` The value of this node, depending on its type; see the table above. | | ` abstract void` | ` `[setPrefix](https://developer.android.com/reference/org/w3c/dom/Node#setPrefix(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` prefix) ` The namespace prefix of this node, or`null`if it is unspecified. | | ` abstract void` | ` `[setTextContent](https://developer.android.com/reference/org/w3c/dom/Node#setTextContent(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` textContent) ` This attribute returns the text content of this node and its descendants. | | ` abstract `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[setUserData](https://developer.android.com/reference/org/w3c/dom/Node#setUserData(java.lang.String,%20java.lang.Object,%20org.w3c.dom.UserDataHandler))`(`[String](https://developer.android.com/reference/java/lang/String)` key, `[Object](https://developer.android.com/reference/java/lang/Object)` data, `[UserDataHandler](https://developer.android.com/reference/org/w3c/dom/UserDataHandler)` handler) ` Associate an object to a key on this node. | ||
## Public methods
### getData
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract String getData ()
```
The content of this processing instruction. This is from the first non white space character after the target to the character immediately preceding the`?>`.
| Returns ||
|--------------------------------------------------------------------|--------|
| [String](https://developer.android.com/reference/java/lang/String) |
|
### getTarget
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract String getTarget ()
```
The target of this processing instruction. XML defines this as being the first token following the markup that begins the processing instruction.
| Returns ||
|--------------------------------------------------------------------|--------|
| [String](https://developer.android.com/reference/java/lang/String) |
|
### setData
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void setData (String data)
```
The content of this processing instruction. This is from the first non white space character after the target to the character immediately preceding the`?>`.
| Parameters ||
|--------|-----------------|
| `data` | `String`
|
| Throws ||
|----------------------------------------------------------------------------------|----------------------------------------------------------------|
| [DOMException](https://developer.android.com/reference/org/w3c/dom/DOMException) | NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly. |