**Inheritance:**
java.lang.Object
```
public class Revision
```

Represents a revision (tracked change) in a document node or style. Use [getRevisionType()](../../com.aspose.words/revision/\#getRevisionType) to check the type of this revision.

To learn more, visit the [ Track Changes in a Document ][Track Changes in a Document] documentation article.

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```


[Track Changes in a Document]: https://docs.aspose.com/words/java/track-changes-in-a-document/
## Methods

| Method | Description |
| --- | --- |
| [accept()](#accept) | Accepts this revision. |
| [getAuthor()](#getAuthor) | Gets the author of this revision. |
| [getDateTime()](#getDateTime) | Gets the date/time of this revision. |
| [getGroup()](#getGroup) | Gets the revision group. |
| [getParentNode()](#getParentNode) | Gets the immediate parent node (owner) of this revision. |
| [getParentStyle()](#getParentStyle) | Gets the immediate parent style (owner) of this revision. |
| [getRevisionType()](#getRevisionType) | Gets the type of this revision. |
| [reject()](#reject) | Reject this revision. |
| [setAuthor(String value)](#setAuthor-java.lang.String) | Sets the author of this revision. |
| [setDateTime(Date value)](#setDateTime-java.util.Date) | Sets the date/time of this revision. |
### accept() {#accept}
```
public void accept()
```


Accepts this revision.

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

### getAuthor() {#getAuthor}
```
public String getAuthor()
```


Gets the author of this revision. Can not be empty string or  null .

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

**Returns:**
java.lang.String - The author of this revision.
### getDateTime() {#getDateTime}
```
public Date getDateTime()
```


Gets the date/time of this revision.

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

**Returns:**
java.util.Date - The date/time of this revision.
### getGroup() {#getGroup}
```
public RevisionGroup getGroup()
```


Gets the revision group. Returns  null  if the revision does not belong to any group.

 **Remarks:** 

Revision has no group if revision type is [RevisionType.STYLE\_DEFINITION\_CHANGE](../../com.aspose.words/revisiontype/\#STYLE-DEFINITION-CHANGE) or if the revision is not longer exist in document context (accepted/rejected).

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

**Returns:**
[RevisionGroup](../../com.aspose.words/revisiongroup/) - The revision group.
### getParentNode() {#getParentNode}
```
public Node getParentNode()
```


Gets the immediate parent node (owner) of this revision. This property will work for any revision type other than [RevisionType.STYLE\_DEFINITION\_CHANGE](../../com.aspose.words/revisiontype/\#STYLE-DEFINITION-CHANGE).

 **Remarks:** 

If this revision relates to change of Style formatting, use [getParentStyle()](../../com.aspose.words/revision/\#getParentStyle) instead.

 **Examples:** 

Shows how to determine the revision type of an inline node.

```

 Document doc = new Document(getMyDir() + "Revision runs.docx");

 // When we edit the document while the "Track Changes" option, found in via Review -> Tracking,
 // is turned on in Microsoft Word, the changes we apply count as revisions.
 // When editing a document using Aspose.Words, we can begin tracking revisions by
 // invoking the document's "StartTrackRevisions" method and stop tracking by using the "StopTrackRevisions" method.
 // We can either accept revisions to assimilate them into the document
 // or reject them to change the proposed change effectively.
 Assert.assertEquals(6, doc.getRevisions().getCount());

 // The parent node of a revision is the run that the revision concerns. A Run is an Inline node.
 Run run = (Run) doc.getRevisions().get(0).getParentNode();

 Paragraph firstParagraph = run.getParentParagraph();
 RunCollection runs = firstParagraph.getRuns();

 Assert.assertEquals(runs.getCount(), 6);

 // Below are five types of revisions that can flag an Inline node.
 // 1 -  An "insert" revision:
 // This revision occurs when we insert text while tracking changes.
 Assert.assertTrue(runs.get(2).isInsertRevision());

 // 2 -  A "format" revision:
 // This revision occurs when we change the formatting of text while tracking changes.
 Assert.assertTrue(runs.get(2).isFormatRevision());

 // 3 -  A "move from" revision:
 // When we highlight text in Microsoft Word, and then drag it to a different place in the document
 // while tracking changes, two revisions appear.
 // The "move from" revision is a copy of the text originally before we moved it.
 Assert.assertTrue(runs.get(4).isMoveFromRevision());

 // 4 -  A "move to" revision:
 // The "move to" revision is the text that we moved in its new position in the document.
 // "Move from" and "move to" revisions appear in pairs for every move revision we carry out.
 // Accepting a move revision deletes the "move from" revision and its text,
 // and keeps the text from the "move to" revision.
 // Rejecting a move revision conversely keeps the "move from" revision and deletes the "move to" revision.
 Assert.assertTrue(runs.get(1).isMoveToRevision());

 // 5 -  A "delete" revision:
 // This revision occurs when we delete text while tracking changes. When we delete text like this,
 // it will stay in the document as a revision until we either accept the revision,
 // which will delete the text for good, or reject the revision, which will keep the text we deleted where it was.
 Assert.assertTrue(runs.get(5).isDeleteRevision());
 
```

**Returns:**
[Node](../../com.aspose.words/node/) - The immediate parent node (owner) of this revision.
### getParentStyle() {#getParentStyle}
```
public Style getParentStyle()
```


Gets the immediate parent style (owner) of this revision. This property will work for only for the [RevisionType.STYLE\_DEFINITION\_CHANGE](../../com.aspose.words/revisiontype/\#STYLE-DEFINITION-CHANGE) revision type.

 **Remarks:** 

If this revision relates to changes on document nodes, use [getParentNode()](../../com.aspose.words/revision/\#getParentNode) instead.

 **Examples:** 

Shows how to work with a document's collection of revisions.

```

 Document doc = new Document(getMyDir() + "Revisions.docx");
 RevisionCollection revisions = doc.getRevisions();

 // This collection itself has a collection of revision groups.
 // Each group is a sequence of adjacent revisions.
 System.out.println(MessageFormat.format("{0} revision groups:", revisions.getGroups().getCount()));

 // Iterate over the collection of groups and print the text that the revision concerns.
 Iterator e = revisions.getGroups().iterator();

 while (e.hasNext()) {
     RevisionGroup revisionGroup = e.next();

     System.out.println(MessageFormat.format("\tGroup type \"{0}\", ", revisionGroup.getRevisionType()) +
             MessageFormat.format("author: {0}, contents: [{1}]", revisionGroup.getAuthor(), revisionGroup.getText().trim()));
 }

 // Each Run that a revision affects gets a corresponding Revision object.
 // The revisions' collection is considerably larger than the condensed form we printed above,
 // depending on how many Runs we have segmented the document into during Microsoft Word editing.
 System.out.println("\n{revisions.Count} revisions:");

 Iterator e1 = revisions.iterator();

 while (e1.hasNext()) {
     Revision revision = e1.next();

     // A StyleDefinitionChange strictly affects styles and not document nodes. This means the "ParentStyle"
     // property will always be in use, while the ParentNode will always be null.
     // Since all other changes affect nodes, ParentNode will conversely be in use, and ParentStyle will be null.
     if (revision.getRevisionType() == RevisionType.STYLE_DEFINITION_CHANGE) {
         System.out.println(MessageFormat.format("\tRevision type \"{0}\", ", revision.getRevisionType()) +
                 MessageFormat.format("author: {0}, style: [{1}]", revision.getAuthor(), revision.getParentStyle().getName()));
     } else {
         System.out.println(MessageFormat.format("\tRevision type \"{0}\", ", revision.getRevisionType()) +
                 MessageFormat.format("author: {0}, contents: [{1}]", revision.getAuthor(), revision.getParentNode().getText().trim()));
     }
 }

 // Reject all revisions via the collection, reverting the document to its original form.
 revisions.rejectAll();

 Assert.assertEquals(0, revisions.getCount());
 
```

**Returns:**
[Style](../../com.aspose.words/style/) - The immediate parent style (owner) of this revision.
### getRevisionType() {#getRevisionType}
```
public int getRevisionType()
```


Gets the type of this revision.

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

**Returns:**
int - The type of this revision. The returned value is one of [RevisionType](../../com.aspose.words/revisiontype/) constants.
### reject() {#reject}
```
public void reject()
```


Reject this revision.

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

### setAuthor(String value) {#setAuthor-java.lang.String}
```
public void setAuthor(String value)
```


Sets the author of this revision. Can not be empty string or  null .

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | java.lang.String | The author of this revision. |

### setDateTime(Date value) {#setDateTime-java.util.Date}
```
public void setDateTime(Date value)
```


Sets the date/time of this revision.

 **Examples:** 

Shows how to work with revisions in a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // Normal editing of the document does not count as a revision.
 builder.write("This does not count as a revision. ");

 Assert.assertFalse(doc.hasRevisions());

 // To register our edits as revisions, we need to declare an author, and then start tracking them.
 doc.startTrackRevisions("John Doe", new Date());

 builder.write("This is revision #1. ");

 Assert.assertTrue(doc.hasRevisions());
 Assert.assertEquals(1, doc.getRevisions().getCount());

 // This flag corresponds to the "Review" -> "Tracking" -> "Track Changes" option in Microsoft Word.
 // The "StartTrackRevisions" method does not affect its value,
 // and the document is tracking revisions programmatically despite it having a value of "false".
 // If we open this document using Microsoft Word, it will not be tracking revisions.
 Assert.assertFalse(doc.getTrackRevisions());

 // We have added text using the document builder, so the first revision is an insertion-type revision.
 Revision revision = doc.getRevisions().get(0);
 Assert.assertEquals("John Doe", revision.getAuthor());
 Assert.assertEquals("This is revision #1. ", revision.getParentNode().getText());
 Assert.assertEquals(RevisionType.INSERTION, revision.getRevisionType());
 Assert.assertEquals(revision.getDateTime().getDate(), new Date().getDate());
 Assert.assertEquals(doc.getRevisions().getGroups().get(0), revision.getGroup());

 // Remove a run to create a deletion-type revision.
 doc.getFirstSection().getBody().getFirstParagraph().getRuns().get(0).remove();

 // Adding a new revision places it at the beginning of the revision collection.
 Assert.assertEquals(RevisionType.DELETION, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(2, doc.getRevisions().getCount());

 // Insert revisions show up in the document body even before we accept/reject the revision.
 // Rejecting the revision will remove its nodes from the body. Conversely, nodes that make up delete revisions
 // also linger in the document until we accept the revision.
 Assert.assertEquals("This does not count as a revision. This is revision #1.", doc.getText().trim());

 // Accepting the delete revision will remove its parent node from the paragraph text
 // and then remove the collection's revision itself.
 doc.getRevisions().get(0).accept();

 Assert.assertEquals(1, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1.", doc.getText().trim());

 builder.writeln("");
 builder.write("This is revision #2.");

 // Now move the node to create a moving revision type.
 Node node = doc.getFirstSection().getBody().getParagraphs().get(1);
 Node endNode = doc.getFirstSection().getBody().getParagraphs().get(1).getNextSibling();
 Node referenceNode = doc.getFirstSection().getBody().getParagraphs().get(0);

 while (node != endNode)
 {
     Node nextNode = node.getNextSibling();
     doc.getFirstSection().getBody().insertBefore(node, referenceNode);
     node = nextNode;
 }

 Assert.assertEquals(RevisionType.MOVING, doc.getRevisions().get(0).getRevisionType());
 Assert.assertEquals(8, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #2.\rThis is revision #1. \rThis is revision #2.", doc.getText().trim());

 // The moving revision is now at index 1. Reject the revision to discard its contents.
 doc.getRevisions().get(1).reject();

 Assert.assertEquals(6, doc.getRevisions().getCount());
 Assert.assertEquals("This is revision #1. \rThis is revision #2.", doc.getText().trim());
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | java.util.Date | The date/time of this revision. |