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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"><html> <head> <title>How to Set the Look and Feel (The Java™ Tutorials > Creating a GUI with JFC/Swing > Modifying the Look and Feel)</title><style type="text/css"> .FigureCaption { margin-left: 1in; margin-right: 1in; font-family: sans-serif; font-size: smaller; text-align: justify; } #TopBar_bl { background: url(../../images/java_bar_bl.gif) 0 100% no-repeat; width: 100%; height: 60px; } #TopBar_br { background: url(../../images/java_bar_br.gif) 100% 100% no-repeat; width: 100%; height: 60px; } #TopBar_tl { background: url(../../images/java_bar_tl.gif) 0 0 no-repeat; width: 100%; height: 60px; } #TopBar_tr { background: url(../../images/java_bar_tr.gif) 100% 0 no-repeat; width: 100%; height: 60px; } #TopBar { background: #35556B url(../../images/java_bar.gif); margin: 10px 10px 0 10px; height:60px; min-width:700px; color: white; font-family: sans-serif; font-weight: bold; } @media print { #BreadCrumbs, #Download { display: none; } } #TopBar_right { line-height: 14px; 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var main = document.getElementById("MainFlow"); var toggle = document.getElementById("ToggleLeft"); if (b) { contents.className = "LeftBar_shown"; main.className = "MainFlow_indented"; toggle.innerHTML = "Hide the TOC"; document.cookie = 'tutorial_showLeftBar=yes; path=/'; } else { contents.className = "LeftBar_hidden"; main.className = "MainFlow_wide"; toggle.innerHTML = "Show the TOC"; document.cookie = 'tutorial_showLeftBar=no; path=/'; } } function toggleLeft() { showLeft(document.getElementById("LeftBar").className == "LeftBar_hidden"); document.getElementById("ToggleLeft").blur(); } function load() { showLeft(leftBar()); document.getElementById("ToggleLeft").style.display="inline"; } </script> </head><body onload="load()"> <div id=TopBar> <div id=TopBar_tr> <div id=TopBar_tl> <div id=TopBar_br> <div id=TopBar_bl> <div id=TopBar_right> <a target="_blank" href="http://java.sun.com/javase/6/download.jsp">Download the JDK</a> <br> <a href="../../search.html" target="_blank">Search the Tutorials</a> <br> <a href="javascript:toggleLeft()" id="ToggleLeft">Hide the TOC</a> </div> </div> </div> </div> </div> </div> <div class=PrintHeaders> <b>Trail:</b> Creating a GUI with JFC/Swing <br><b>Lesson:</b> Modifying the Look and Feel </div> <div id=LeftBar class=LeftBar_shown> <div id=Contents> <div class="linkLESSON"><a href="index.html">Modifying the Look and Feel</a></div><div class="nolinkAHEAD">How to Set the Look and Feel</div></div> </div> <div id=MainFlow class=MainFlow_indented> <span id=BreadCrumbs> <a href=../../index.html target=_top>Home Page</a> > <a href=../index.html target=_top>Creating a GUI with JFC/Swing</a> > <a href=index.html target=_top>Modifying the Look and Feel</a> </span> <div class=NavBit> <a target=_top href=index.html>« Previous</a> • <a target=_top href=../TOC.html>Trail</a> • <a target=_top href=../dnd/index.html>Next »</a> </div> <div id=PageTitle>How to Set the Look and Feel</div> <blockquote><!-- Look and Feel -->The architecture of Swing is designed so that you may change the "look and feel" (L&F) of your application's GUI (see <a class="OutsideLink" target="_blank" href="http://java.sun.com/products/jfc/tsc/articles/architecture/index.html">A Swing Architecture Overview</a>). "Look" refers to the appearance of GUI widgets (more formally, JComponents) and "feel" refers to the way the widgets behave.<p><!--In Swing, a JComponent object is an interacting combination of a Model object and a UI delegate object. The division of functionality between these two entities can be fuzzy, but in general:<ul><li>The Model object for a Swing component contains information on the current state of the component.</li><p><li>The UI delegate object for a Swing component is responsible for implementing the aspects of the component that depend on the look (painting) and feel (handling user interaction). </li></ul> <p>The base classes for the Model objects are found in the <code>javax.swing</code> package—for example, <code>DefaultButtonModel</code> or <code>JToggleButton.ToggleButtonModel.</code> The Model objects are independent of the L&F installed.<p>The <code>ComponentUI</code> class in the <code>javax.swing.plaf</code> package is the base class for all UI delegate objects in the Swing pluggable look and feel architecture. The JComponent class invokes methods from this class in order to delegate operations (painting, event handling, etc.) that vary depending on the L&F installed. <p>A Look and Feel, then, is a set of coordinated UI delegate objects, one for each JComponent used in the GUI.--><p>The rest of this section discusses the following subjects:<ul><li> <a href="#available">Available Look and Feels</a><li> <a href="#programmatic">Programatically Setting the Look and Feel</a><li> <a href="#commandLine">Specifying the Look and Feel: Command Line</a><li> <a href="#properties">Specifying the Look and Feel: swing.properties</a><li> <a href="#steps">How the UI Manager Chooses the Look and Feel</a><li> <a href="#dynamic">Changing the Look and Feel After Startup</a><li> <a href="#example">An Example</a>⌨️ 快捷键说明
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