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</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#UNDEFINED_CONDITION">UNDEFINED_CONDITION</A></B></CODE><BR> Constant used by some of the APIs to mean that no condition is defined.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#WHEN_ANCESTOR_OF_FOCUSED_COMPONENT">WHEN_ANCESTOR_OF_FOCUSED_COMPONENT</A></B></CODE><BR> Constant used for registerKeyboardAction() that means that the command should be invoked when the receiving component is an ancestor of the focused component or is itself the focused component.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#WHEN_FOCUSED">WHEN_FOCUSED</A></B></CODE><BR> Constant used for registerKeyboardAction() that means that the command should be invoked when the component has the focus.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#WHEN_IN_FOCUSED_WINDOW">WHEN_IN_FOCUSED_WINDOW</A></B></CODE><BR> Constant used for registerKeyboardAction() that means that the command should be invoked when the receiving component is in the window that has the focus or is itself the focused component.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.awt.Component"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class java.awt.<A HREF="../../java/awt/Component.html">Component</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/awt/Component.html#BOTTOM_ALIGNMENT">BOTTOM_ALIGNMENT</A>, <A HREF="../../java/awt/Component.html#CENTER_ALIGNMENT">CENTER_ALIGNMENT</A>, <A HREF="../../java/awt/Component.html#LEFT_ALIGNMENT">LEFT_ALIGNMENT</A>, <A HREF="../../java/awt/Component.html#RIGHT_ALIGNMENT">RIGHT_ALIGNMENT</A>, <A HREF="../../java/awt/Component.html#TOP_ALIGNMENT">TOP_ALIGNMENT</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.awt.image.ImageObserver"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface java.awt.image.<A HREF="../../java/awt/image/ImageObserver.html">ImageObserver</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/awt/image/ImageObserver.html#ABORT">ABORT</A>, <A HREF="../../java/awt/image/ImageObserver.html#ALLBITS">ALLBITS</A>, <A HREF="../../java/awt/image/ImageObserver.html#ERROR">ERROR</A>, <A HREF="../../java/awt/image/ImageObserver.html#FRAMEBITS">FRAMEBITS</A>, <A HREF="../../java/awt/image/ImageObserver.html#HEIGHT">HEIGHT</A>, <A HREF="../../java/awt/image/ImageObserver.html#PROPERTIES">PROPERTIES</A>, <A HREF="../../java/awt/image/ImageObserver.html#SOMEBITS">SOMEBITS</A>, <A HREF="../../java/awt/image/ImageObserver.html#WIDTH">WIDTH</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><CODE><B><A HREF="../../javax/swing/JComponent.html#JComponent()">JComponent</A></B>()</CODE><BR> Default JComponent constructor.</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> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#addAncestorListener(javax.swing.event.AncestorListener)">addAncestorListener</A></B>(<A HREF="../../javax/swing/event/AncestorListener.html">AncestorListener</A> listener)</CODE><BR> Registers <i>listener</i> so that it will receive AncestorEvents when it or any of its ancestors move or are made visible / invisible.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#addNotify()">addNotify</A></B>()</CODE><BR> Notifies this component that it now has a parent component.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#addPropertyChangeListener(java.beans.PropertyChangeListener)">addPropertyChangeListener</A></B>(<A HREF="../../java/beans/PropertyChangeListener.html">PropertyChangeListener</A> listener)</CODE><BR> Adds a PropertyChangeListener to the listener list.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)">addPropertyChangeListener</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, <A HREF="../../java/beans/PropertyChangeListener.html">PropertyChangeListener</A> listener)</CODE><BR> Adds a PropertyChangeListener for a specific property.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#addVetoableChangeListener(java.beans.VetoableChangeListener)">addVetoableChangeListener</A></B>(<A HREF="../../java/beans/VetoableChangeListener.html">VetoableChangeListener</A> listener)</CODE><BR> Adds a VetoableChangeListener to the listener list.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#computeVisibleRect(java.awt.Rectangle)">computeVisibleRect</A></B>(<A HREF="../../java/awt/Rectangle.html">Rectangle</A> visibleRect)</CODE><BR> Returns the Component's "visible rect rectangle" - the intersection of the visible rectangles for this component and all of its ancestors.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#contains(int, int)">contains</A></B>(int x, int y)</CODE><BR> Gives the UI delegate an opportunity to define the precise shape of this component for the sake of mouse processing.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../javax/swing/JToolTip.html">JToolTip</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#createToolTip()">createToolTip</A></B>()</CODE><BR> Returns the instance of JToolTip that should be used to display the tooltip.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#disable()">disable</A></B>()</CODE><BR> overridden to ensure Accessibility support</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#enable()">enable</A></B>()</CODE><BR> overridden to ensure Accessibility support</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, boolean, boolean)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, boolean oldValue, boolean newValue)</CODE><BR> Reports a bound property change.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, byte, byte)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, byte oldValue, byte newValue)</CODE><BR> Reports a bound property change.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, char, char)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, char oldValue, char newValue)</CODE><BR> Reports a bound property change.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, double, double)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, double oldValue, double newValue)</CODE><BR> Reports a bound property change.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, float, float)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, float oldValue, float newValue)</CODE><BR> Reports a bound property change.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, int, int)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, int oldValue, int newValue)</CODE><BR> Reports a bound property change.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/swing/JComponent.html#firePropertyChange(java.lang.String, long, long)">firePropertyChange</A></B>(<A HREF="../../java/lang/String.html">String</A> propertyName, long oldValue, long newValue)</CODE><BR>⌨️ 快捷键说明
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