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31 32</head> 33<body class="content"> 34 <header role="banner" id="fh5co-header"> 35 <div class="container"> 36 37 <nav class="navbar navbar-default"> 38 <div class="navbar-header"> 39 40 <a href="#" class="/js-fh5co-nav-toggle fh5co-nav-toggle" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"><i></i></a> 41 <a class="navbar-brand" href="/index.html">JavaFX</a> 42 </div> 43 <div id="navbar" class="navbar-collapse collapse"> 44 <ul class="nav navbar-nav navbar-right"> 45 <li><a class="external" href="/index.html" data-nav-section="home"><span>主页</span></a></li> 46 <li><a class="external" href="/index.html#fh5co-documentation"><span>ææ¡£</span></a></li> 47 <li><a class="external" href="/index.html#fh5co-link" data-nav-section="link"><span>é¾æ¥</span></a></li> 48 <li><a class="external" href="/index.html#fh5co-work"><span>社åº</span></a></li> 49 <li><a class="external" href="/index.html#fh5co-testimonials"><span>è¯ä»·</span></a></li> 50 <li class="active"><a href="/highlights/24"><span>亮ç¹</span></a></li> 51 </ul> 52 </div> 53 </nav> 54 55 </div> 56</header> 57 <section id="fh5co-home" data-section="home" style="background-image: url(/images/full_image_2.jpg);" data-stellar-background-ratio="0.5"> 58 <div class="gradient"></div> 59 <div class="container"> 60 <div class="high-wrap"> 61 <div class="row"> 62 <div class="col-md-12"> 63 <div class=box><h1 id=javafx-24-highlights>JavaFX 24 亮ç¹</h1> 64 <p class=content>JavaFX version 24 has been released. We’ve tailored down some of the most 65 exciting parts of the release in this document.</p> 66 <h2 id=important-changes>Important Changes</h2> 67 <h3 id=javafx-24-requires-jdk-22-or-later>JavaFX 24 Requires JDK 22 or Later</h3> 68 <p class=content>JavaFX 24 is compiled with <code>--release 22</code> and thus requires JDK 22 69 or later in order to run. If you attempt to run with an older JDK, the Java launcher will 70 exit with an error message indicating that the <code>javafx.base</code> module cannot be 71 read.</p> 72 <p class=content>See <a href=https://bugs.openjdk.org/browse/JDK-8340003>JDK-8340003</a> for 73 more information.</p> 74 <h3 id=javafx-applications-must-use---enable-native-access>JavaFX Applications Must Use <code>--enable-native-access</code> 75 </h3> 76 <p class=content>Running a JavaFX application on JDK 24 will produce a warning from each of the 77 three JavaFX modules that rely on native access, due to the changes specified in <a 78 href=https://openjdk.org/jeps/472>JEP 472</a>. Each warning will include the 79 following message:</p> 80 <pre><code>WARNING: Restricted methods will be blocked in a future release unless native access is enabled 81</code></pre> 82 <p class=content>In order to suppress the warning now, and to be able to run your application at 83 all in a subsequent version of the JDK, you need to explicitly enable native access for all 84 modules that need it. This is done by passing <code>--enable-native-access=<list-of-modules></code> 85 to <code>java</code> on the command line, listing the modules that you grant native access. 86 This list of modules includes <code>javafx.graphics</code> and, optionally, <code>javafx.media</code> 87 and <code>javafx.web</code>, if your application uses those modules.</p> 88 <p class=content>For example:</p> 89 <pre><code>java --enable-native-access=javafx.graphics,javafx.media,javafx.web 90</code></pre> 91 <p class=content>See <a href=https://bugs.openjdk.org/browse/JDK-8347744>JDK-8347744</a> for 92 more information.</p> 93 <h3 id=the-jdkjsobject-module-is-now-included-with-javafx>The <code>jdk.jsobject</code> Module 94 is Now Included with JavaFX</h3> 95 <p class=content>The <code>jdk.jsobject</code> module, which is used by JavaFX WebView 96 applications, is now included with JavaFX, replacing the JDK module of the same name. The 97 <code>jdk.jsobject</code> module is deprecated as of JDK 24, and will be removed in a future 98 release of the JDK.</p> 99 <p class=content>To facilitate the transition, <code>jdk.jsobject</code> is now an upgradable 100 module in the JDK. This means that the version of <code>jdk.jsobject</code> delivered with 101 JavaFX can be used in place of the one in the JDK to avoid the compiler warning. This can be 102 done as follows:</p> 103 <p class=content>Go through <a 104 href=https://github.com/openjdk/jfx/blob/jfx24/doc-files/release-notes-24.md>JavaFX 24
105 release notes</a> or <a href=https://bugs.openjdk.org/browse/JDK-8337280>JDK-8337280</a> for 106 more information.</p> 107 <h3 id=pluggable-image-loading-via-javaximageio>Pluggable Image Loading via 108 <code>javax.imageio</code></h3> 109 <p class=content>JavaFX 24 supports the Java Image I/O API, allowing applications to use 110 third-party image loaders in addition to the built-in image loaders. 111 This includes the ability to use variable-density image loaders for formats like SVG. When 112 an image is loaded using a variable-density image loader, JavaFX rasterizes the image with 113 the screen’s DPI scaling.</p> 114 <p class=content>Applications that want to use this feature can use existing open-source Image 115 I/O extension libraries, or register a custom Image I/O service provider instance with the 116 <code>IIORegistry</code> class. 117 Refer to the Java <a 118 href=https://docs.oracle.com/en/java/javase/23/docs/api/java.desktop/javax/imageio/package-summary.html>Image 119 I/O documentation</a> for more information.</p> 120 <p class=content>See <a href=https://bugs.openjdk.org/browse/JDK-8306707>JDK-8306707</a> for 121 more information.</p> 122 <h3 id=scrollpane-consumes-navigation-keys-only-when-it-has-direct-focus><code>ScrollPane</code> 123 Consumes Navigation Keys Only When It Has Direct Focus</h3> 124 <p class=content><code>ScrollPane</code> now only responds to key events when it is the active 125 focus owner. This ensures that custom controls and other UI elements work correctly inside a 126 <code>ScrollPane</code>, providing a more consistent and intuitive navigation experience. 127 </p> 128 <p class=content>Applications that prefer the previous behavior, where <code>ScrollPane</code> 129 always reacts to arrow keys and other navigational inputs, can manually restore it by adding 130 an event handler. See <a 131 href=https://github.com/openjdk/jfx/blob/jfx24/doc-files/notes/24/JDK-8340852-ScrollPane.md>this 132 note</a> for an example of how to do this.</p> 133 <p class=content>See <a href=https://bugs.openjdk.org/browse/JDK-8340852>JDK-8340852</a> for 134 more information.</p> 135 <h2 id=removed-features-and-options>Removed Features and Options</h2> 136 <h3 id=javafx-no-longer-supports-running-with-a-security-manager>JavaFX No Longer Supports 137 Running With a Security Manager</h3> 138 <p class=content>The Java Security Manager has been permanently disabled in JDK 24 via <a 139 href=https://openjdk.org/jeps/486>JEP 486</a>.</p> 140 <p class=content>Likewise, as of JavaFX 24, it is no longer possible to run JavaFX applications 141 with a security manager enabled. This is true even if you run your application on an older 142 JDK that still supports the security manager.</p> 143 <p class=content>The following exception will be thrown when the JavaFX runtime is initialized 144 with the Security Manager enabled:</p> 145 <blockquote><p class=content>NOTE: UnsupportedOperationException: JavaFX does not support 146 running with the Security Manager</p></blockquote> 147 <p class=content>See <a href=https://bugs.openjdk.org/browse/JDK-8341090>JDK-8341090</a> for 148 more information.</p> 149 <h2 id=known-issues>Known Issues</h2>
150 <h3 id=javafx-warning-printed-for-use-of-terminally-deprecated-methods-in-sunmiscunsafe>JavaFX 151 Warning Printed for Use of Terminally Deprecated Methods in <code>sun.misc.Unsafe</code> 152 </h3> 153 <p class=content>Running a JavaFX application on JDK 24 will produce a warning the first time 154 any UI Control or complex shape is rendered:</p> 155 <pre><code>WARNING: A terminally deprecated method in sun.misc.Unsafe has been called 156... 157WARNING: sun.misc.Unsafe::allocateMemory will be removed in a future release 158</code></pre> 159 <p class=content>To disable this warning, pass 160 <code>--sun-misc-unsafe-memory-access=allow</code> to <code>java</code> on the command line. 161 For example:</p> 162 <pre><code>java --sun-misc-unsafe-memory-access=allow 163</code></pre> 164 <p class=content>This will be fixed in a subsequent version of JavaFX, after which time this 165 flag will no longer be needed.</p> 166 <p class=content>See <a href=https://bugs.openjdk.org/browse/JDK-8345121>JDK-8345121</a> for 167 more information.</p> 168 <p class=content>Exciting features:</p> 169 <ul> 170 <li><p class=content>New APIs:</p> 171 <ul> 172 <li>InputMap is now public API as an Incubator</li> 173 <li>Focus traversal API is now public for use in custom controls</li> 174 </ul> 175 </li> 176 <li><p class=content>New Features:</p> 177 <ul> 178 <li>A new RichTextArea Control is now in Incubator</li> 179 <li>Support “@1x” image naming convention as fallback</li> 180 <li>Support pluggable image loading via javax.imageio</li> 181 </ul> 182 </li> 183 </ul> 184 <p class=content>Improvements:</p> 185 <ul> 186 <li>Tree-structural pseudo-classes are now supported in JavaFX CSS</li> 187 </ul> 188 <p class=content>The community came together to fix 57 bugs in the last 6 months. Following are 189 major bug-fixes that went into JavaFX 24:</p> 190 <ul> 191 <li>Fix for application window not always activated on macOS 15</li> 192 <li>Fix for css transition not started when initial value was not specified</li> 193 <li>Fix for infinite loop occurs while resolving lookups</li> 194 <li>Fix for IOOBE when adding data to a Series of a BarChart that already contains data</li> 195 </ul> 196 <p class=content>Finally, these are some dependency upgrades in JavaFX 24:</p> 197 <ul> 198 <li>Update libFFI to 3.4.6</li> 199 <li>Update Glib to 2.82.4</li> 200 <li>Update GStreamer to 1.24.10</li> 201 <li>Update WebKit to 619.1</li> 202 <li>Update libxslt to 1.1.42</li> 203 </ul> 204 <p class=content>A more comprehensive list of all the changes in JavaFX 24 can be found on <a 205 href=https://gitee.com/openjfx/jfx/blob/jfx24/doc-files/release-notes-24.md>Gitee</a>. 206 </p> 207 </div> 208 </div> 209 </div> 210 </div> 211 </div> 212 </section> 213</div> 214 <footer id="footer" role="contentinfo"> 215 <div class="container"> 216 <div class=""> 217 <div class="col-md-12 text-center"> 218 <p style="font-size:15px;margin-bottom: 0.5em;color: #52d3aa;"><a href="https://cloud.tencent.com/act/double11/go?spread_hash_key=UVuZF2">
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