java.lang.NoClassDefFoundError:无法初始化类java.awt.Toolkit

Question

我正在研究XUbuntu 13.04并开发swing应用程序.因为我只是想尝试那个应用程序,我java.lang.NoClassDefFoundError: Could not initialize class java.awt.Toolkit在启动时遇到了.

我发现了几个关于服务器/客户端虚拟机的问题,并注意到我有一个服务器虚拟机,而对于Linux 64,则不再有客户端虚拟机.但是,恕我直言,这个问题不应该取决于我正在运行的VM.

有没有人注意到这个问题并解决了它？我究竟做错了什么？使用64位jdk一切正常,但是当我尝试使用32位jdk时启动失败.

提前致谢!

PS:Java版本1.7.0_25与之相同1.7.0_09

编辑

使用无头模式时,会发生以下异常:

java.lang.reflect.InvocationTargetException
    at java.awt.EventQueue.invokeAndWait(EventQueue.java:1272)
    at java.awt.EventQueue.invokeAndWait(EventQueue.java:1247)
    at javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1349)
    at Main.main(Main.java:218)
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 java.awt.Frame.<init>(Frame.java:385)
    at javax.swing.JFrame.<init>(JFrame.java:180)
    at ..MyFrame.<init>(MyFrame.java:23)

Answer 1

好的,最后我找到了答案.谢谢你的努力!问题是我libxtst6安装了但只有64位版本.

sudo apt-get install libxtst6:i386 为我做了诀窍.

我怎么找到这个答案？我ldd编了一下,但没有,你可以在下面看到:

$ ldd jdk1.7.0_25_x86/jre/lib/i386/xawt/libmawt.so
    linux-gate.so.1 =>  (0xf7769000)
    libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xf76ee000)
    libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xf76c2000)
    libawt.so => jdk1.7.0_25_x86/jre/lib/i386/xawt/../libawt.so (0xf760f000)
    libXext.so.6 => /usr/lib/i386-linux-gnu/libXext.so.6 (0xf75fd000)
    libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xf74c9000)
    libXrender.so.1 => /usr/lib/i386-linux-gnu/libXrender.so.1 (0xf74bf000)
    libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf74ba000)
    libXtst.so.6 => /usr/lib/i386-linux-gnu/libXtst.so.6 (0xf74b2000)
    libXi.so.6 => /usr/lib/i386-linux-gnu/libXi.so.6 (0xf74a2000)
    libjava.so => jdk1.7.0_25_x86/jre/lib/i386/xawt../libjava.so (0xf747e000)
    libjvm.so => not found
    libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf72d5000)
    /lib/ld-linux.so.2 (0xf776a000)
    libjvm.so => not found
    libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xf72b3000)
    libjvm.so => not found
    libverify.so => java/jdk1.7.0_25_x86/jre/lib/i386/xawt/../libverify.so (0xf72a7000)
    libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xf72a2000)
    libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6 (0xf729b000)
    libjvm.so => not found

所以当我结束信任我的IDE并在命令行上启动示例应用程序时就是这样.命令行再次对我很好:

$ jdk1.7.0_25_x86/bin/java Main
Exception in thread "main" java.lang.UnsatisfiedLinkError: jdk1.7.0_25_x86/jre/lib/i386/xawt/libmawt.so: libXtst.so.6: cannot open shared object file: No such file or directory
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1957)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1882)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1843)
    at java.lang.Runtime.load0(Runtime.java:795)
    at java.lang.System.load(System.java:1061)
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1957)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1882)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1864)
    at java.lang.Runtime.loadLibrary0(Runtime.java:849)
    at java.lang.System.loadLibrary(System.java:1087)
    at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:67)
    at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:47)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Toolkit.loadLibraries(Toolkit.java:1646)
    at java.awt.Toolkit.<clinit>(Toolkit.java:1668)
    at java.awt.Component.<clinit>(Component.java:595)
    at Main.main(Main.java:5)

Answer 2

在 Ubuntu 20.04 上遇到缺少 awt 库的问题。通过安装 openjdk-11-jre 修复它：

sudo apt-get install openjdk-11-jre

Answer 3

感谢@Bertram 的回答。作为补充，我在使用 Fedora 时遇到了类似的问题，对于使用 CentOS/Fedora 和 Redhat 的任何人，请尝试一下yum install libXtst。