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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:42:15 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class PlainDocument</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/PlainDocument.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/swing/text/PasswordView.html"><B>PREV CLASS</B></A> <A HREF="../../../javax/swing/text/PlainView.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="PlainDocument.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#inner_classes_inherited_from_class_javax.swing.text.AbstractDocument">INNER</A> | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.swing.text</FONT><BR>Class PlainDocument</H2><PRE><A HREF="../../../java/lang/Object.html">java.lang.Object</A> | +--<A HREF="../../../javax/swing/text/AbstractDocument.html">javax.swing.text.AbstractDocument</A> | +--<B>javax.swing.text.PlainDocument</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../javax/swing/text/Document.html">Document</A>, <A HREF="../../../java/io/Serializable.html">Serializable</A></DD></DL><HR><DL><DT>public class <B>PlainDocument</B><DT>extends <A HREF="../../../javax/swing/text/AbstractDocument.html">AbstractDocument</A></DL><P>A plain document that maintains no character attributes. The default element structure for this document is a map of the lines in the text. The Element returned by getDefaultRootElement is a map of the lines, and each child element represents a line. This model does not maintain any character level attributes, but each line can be tagged with an arbitrary set of attributes. Line to offset, and offset to line translations can be quickly performed using the default root element. The structure information of the DocumentEvent's fired by edits will indicate the line structure changes. <p> The default content storage management is performed by a gapped buffer implementation (GapContent). It supports editing reasonably large documents with good efficiency when the edits are contiguous or clustered, as is typical. <p> <strong>Warning:</strong> Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. A future release of Swing will provide support for long term persistence.<P><DL><DT><B>See Also: </B><DD><A HREF="../../../javax/swing/text/Document.html"><CODE>Document</CODE></A>, <A HREF="../../../javax/swing/text/AbstractDocument.html"><CODE>AbstractDocument</CODE></A>, <A HREF="../../../serialized-form.html#javax.swing.text.PlainDocument">Serialized Form</A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><A NAME="inner_classes_inherited_from_class_javax.swing.text.AbstractDocument"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Inner classes inherited from class javax.swing.text.<A HREF="../../../javax/swing/text/AbstractDocument.html">AbstractDocument</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/swing/text/AbstractDocument.AbstractElement.html">AbstractDocument.AbstractElement</A>, <A HREF="../../../javax/swing/text/AbstractDocument.AttributeContext.html">AbstractDocument.AttributeContext</A>, <A HREF="../../../javax/swing/text/AbstractDocument.BranchElement.html">AbstractDocument.BranchElement</A>, <A HREF="../../../javax/swing/text/AbstractDocument.Content.html">AbstractDocument.Content</A>, <A HREF="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html">AbstractDocument.DefaultDocumentEvent</A>, <A HREF="../../../javax/swing/text/AbstractDocument.ElementEdit.html">AbstractDocument.ElementEdit</A>, <A HREF="../../../javax/swing/text/AbstractDocument.LeafElement.html">AbstractDocument.LeafElement</A></CODE></TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#lineLimitAttribute">lineLimitAttribute</A></B></CODE><BR> Name of the attribute that specifies the maximum length of a line, if there is a maximum length.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#tabSizeAttribute">tabSizeAttribute</A></B></CODE><BR> Name of the attribute that specifies the tab size for tabs contained in the content.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.swing.text.AbstractDocument"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class javax.swing.text.<A HREF="../../../javax/swing/text/AbstractDocument.html">AbstractDocument</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/swing/text/AbstractDocument.html#BAD_LOCATION">BAD_LOCATION</A>, <A HREF="../../../javax/swing/text/AbstractDocument.html#BidiElementName">BidiElementName</A>, <A HREF="../../../javax/swing/text/AbstractDocument.html#ContentElementName">ContentElementName</A>, <A HREF="../../../javax/swing/text/AbstractDocument.html#ElementNameAttribute">ElementNameAttribute</A>, <A HREF="../../../javax/swing/text/AbstractDocument.html#listenerList">listenerList</A>, <A HREF="../../../javax/swing/text/AbstractDocument.html#ParagraphElementName">ParagraphElementName</A>, <A HREF="../../../javax/swing/text/AbstractDocument.html#SectionElementName">SectionElementName</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_javax.swing.text.Document"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface javax.swing.text.<A HREF="../../../javax/swing/text/Document.html">Document</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../javax/swing/text/Document.html#StreamDescriptionProperty">StreamDescriptionProperty</A>, <A HREF="../../../javax/swing/text/Document.html#TitleProperty">TitleProperty</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> </CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#PlainDocument()">PlainDocument</A></B>()</CODE><BR> Constructs a plain text document.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected </CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#PlainDocument(javax.swing.text.AbstractDocument.Content)">PlainDocument</A></B>(<A HREF="../../../javax/swing/text/AbstractDocument.Content.html">AbstractDocument.Content</A> c)</CODE><BR> Constructs a plain text document.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../javax/swing/text/AbstractDocument.AbstractElement.html">AbstractDocument.AbstractElement</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#createDefaultRoot()">createDefaultRoot</A></B>()</CODE><BR> Creates the root element to be used to represent the default document structure.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/swing/text/Element.html">Element</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#getDefaultRootElement()">getDefaultRootElement</A></B>()</CODE><BR> Gets the default root element for the document model.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/swing/text/Element.html">Element</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#getParagraphElement(int)">getParagraphElement</A></B>(int pos)</CODE><BR> Get the paragraph element containing the given position.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/swing/text/PlainDocument.html#insertUpdate(javax.swing.text.AbstractDocument.DefaultDocumentEvent, javax.swing.text.AttributeSet)">insertUpdate</A></B>(<A HREF="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html">AbstractDocument.DefaultDocumentEvent</A> chng, <A HREF="../../../javax/swing/text/AttributeSet.html">AttributeSet</A> attr)</CODE>⌨️ 快捷键说明
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