我安装了程序喵在 Ubuntu 14.4 上,Gnome Shell 3.10.4(它是一个 GNOME 菜单编辑器)。系统更新到 Java 8。当我从命令行运行程序时,我得到以下信息:
meow
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.medit.gui.Runner$.main(Runner.scala:15)
at org.medit.gui.Runner.main(Runner.scala)
Caused by: java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:207)
at java.awt.Window.<init>(Window.java:535)
at java.awt.Frame.<init>(Frame.java:420)
at javax.swing.JFrame.<init>(JFrame.java:218)
at org.medit.gui.Main$.<init>(Main.scala:23)
at org.medit.gui.Main$.<clinit>(Main.scala)
... 2 more
有什么想法吗? (我有不Java 经验。)
dpkg -l '*jre*' | grep '^ii'
输出以下内容
ii default-jre-headless 2:1.7-51 i386 Standard Java or Java compatible Runtime (headless)
ii openjdk-7-jre-headless:i386 7u111-2.6.7-0ubuntu0.14.04.3 i386 OpenJDK Java runtime, using Hotspot JIT (headless)
ii openjdk-8-jre:i386 8u91-b14-0ubuntu4~14.04 i386 OpenJDK Java runtime, using Hotspot JIT
ii openjdk-8-jre-headless:i386 8u91-b14-0ubuntu4~14.04 i386 OpenJDK Java runtime, using Hotspot JIT (headless)
当我尝试删除它时,openjdk-7-jre-headless:i386
它也想删除default-jre-headless
。 (认为这可能与 v8 冲突。)
===========
编辑:将 Java 8 设置为默认值后出现错误(对于版本,它显示“java 版本“1.8.0_111””):
Exception in thread "AWT-EventQueue-0" java.util.NoSuchElementException: key not found: abridged
at scala.collection.MapLike$class.default(MapLike.scala:228)
at scala.collection.AbstractMap.default(Map.scala:58)
at scala.collection.mutable.HashMap.apply(HashMap.scala:64)
at org.medit.core.icons.IconFinder$$anonfun$loadIcon$2.apply(IconFinder.scala:46)
at org.medit.core.icons.IconFinder$$anonfun$loadIcon$2.apply(IconFinder.scala:36)
at scala.collection.mutable.MapLike$class.getOrElseUpdate(MapLike.scala:189)
at scala.collection.mutable.AbstractMap.getOrElseUpdate(Map.scala:91)
at org.medit.core.icons.IconFinder$.loadIcon(IconFinder.scala:36)
at org.medit.core.icons.ImageScaler.run(ImageScaler.scala:11)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
答案1
Meow 失败是因为它是在无头 JRE 上启动的,而该 JRE 无法显示窗口(因此会出现相当模糊的错误消息)。
要解决此问题,最简单的选择是重新配置默认 JVM:
sudo update-java-alternatives -s java-1.8.0-openjdk-amd64
您可以通过运行来检查默认 JVM 是什么
java -version
如果正确选择 OpenJDK 8 作为默认值,您应该得到类似的信息
openjdk version "1.8.0_91"
OpenJDK Runtime Environment (build 1.8.0_91-8u91-b14-0-b14)
OpenJDK 64-Bit Server VM (build 25.91-b14, mixed mode)
(版本号可能略有不同,重要的部分是“1.8.0”)。