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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 23:38:49 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class JLabel</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/JLabel.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/JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon.html"><B>PREV CLASS</B></A> <A HREF="../../javax/swing/JLabel.AccessibleJLabel.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="JLabel.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#inner_class_summary">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</FONT><BR>Class JLabel</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<A HREF="../../java/awt/Component.html">java.awt.Component</A> | +--<A HREF="../../java/awt/Container.html">java.awt.Container</A> | +--<A HREF="../../javax/swing/JComponent.html">javax.swing.JComponent</A> | +--<B>javax.swing.JLabel</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../javax/accessibility/Accessible.html">Accessible</A>, <A HREF="../../java/awt/image/ImageObserver.html">ImageObserver</A>, <A HREF="../../java/awt/MenuContainer.html">MenuContainer</A>, <A HREF="../../java/io/Serializable.html">Serializable</A>, <A HREF="../../javax/swing/SwingConstants.html">SwingConstants</A></DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../javax/swing/plaf/basic/BasicComboBoxRenderer.html">BasicComboBoxRenderer</A>, <A HREF="../../javax/swing/DefaultListCellRenderer.html">DefaultListCellRenderer</A>, <A HREF="../../javax/swing/table/DefaultTableCellRenderer.html">DefaultTableCellRenderer</A>, <A HREF="../../javax/swing/tree/DefaultTreeCellRenderer.html">DefaultTreeCellRenderer</A></DD></DL><HR><DL><DT>public class <B>JLabel</B><DT>extends <A HREF="../../javax/swing/JComponent.html">JComponent</A><DT>implements <A HREF="../../javax/swing/SwingConstants.html">SwingConstants</A>, <A HREF="../../javax/accessibility/Accessible.html">Accessible</A></DL><P>A display area for a short text string or an image, or both. A label does not react to input events. As a result, it cannot get the keyboard focus. A label can, however, display a keyboard alternative as a convenience for a nearby component that has a keyboard alternative but can't display it. <p> A <code>JLabel</code> object can display either text, an image, or both. You can specify where in the label's display area the label's contents are aligned by setting the vertical and horizontal alignment. By default, labels are vertically centered in their display area. Text-only labels are leading edge aligned, by default; image-only labels are horizontally centered, by default. <p> You can also specify the position of the text relative to the image. By default, text is on the trailing edge of the image, with the text and image vertically aligned. <p> A label's leading and trailing edge are determined from the value of its <A HREF="../../java/awt/ComponentOrientation.html"><CODE>ComponentOrientation</CODE></A> property. At present, the default ComponentOrientation setting maps the leading edge to left and the trailing edge to right. <p> Finally, you can use the <code>setIconTextGap</code> method to specify how many pixels should appear between the text and the image. The default is 4 pixels. <p> See <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/label.html">How to Use Labels</a> in <em>The Java Tutorial</em> for further documentation. <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="../../serialized-form.html#javax.swing.JLabel">Serialized Form</A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><A NAME="inner_class_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Inner Class Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected class</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JLabel.AccessibleJLabel.html">JLabel.AccessibleJLabel</A></B></CODE><BR> The class used to obtain the accessible role for this object.</TD></TR></TABLE> <A NAME="inner_classes_inherited_from_class_javax.swing.JComponent"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Inner classes inherited from class javax.swing.<A HREF="../../javax/swing/JComponent.html">JComponent</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../javax/swing/JComponent.AccessibleJComponent.html">JComponent.AccessibleJComponent</A></CODE></TD></TR></TABLE> <A NAME="inner_classes_inherited_from_class_java.awt.Container"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Inner classes inherited from class java.awt.<A HREF="../../java/awt/Container.html">Container</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/awt/Container.AccessibleAWTContainer.html">Container.AccessibleAWTContainer</A></CODE></TD></TR></TABLE>⌨️ 快捷键说明
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