我对 Java 有疑问！史考特证券！

Question

我的问题是我下载了一个扩展名为 .jnlp 的文件。我安装了必要的 Java Runtime Environment (JRE) 7 openjdk。当我尝试打开下载的必需/必需的 Scottrade.jnlp 文件时，它会处理请求，但我收到错误。以下是更多数据https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/1385639。我不知道为什么它不工作。但是如果您有任何关于修复此问题的详细信息。请给我建议。系统规格：Ubuntu 12.04，64 位，系统已达到数据要求谢谢这是我收到的错误消息！

net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize application. 
    at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:778)
    at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:552)
    at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:889)
Caused by: net.sourceforge.jnlp.LaunchException: Fatal: Application Error: Cannot grant permissions to unsigned jars. Application requested security permissions, but jars are not signed.
    at net.sourceforge.jnlp.runtime.JNLPClassLoader.setSecurity(JNLPClassLoader.java:289)
    at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:209)
    at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:323)
    at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:770)
    ... 2 more
Caused by: 
net.sourceforge.jnlp.LaunchException: Fatal: Application Error: Cannot grant permissions to unsigned jars. Application requested security permissions, but jars are not signed.
    at net.sourceforge.jnlp.runtime.JNLPClassLoader.setSecurity(JNLPClassLoader.java:289)
    at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:209)
    at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:323)
    at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:770)
    at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:552)
    at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:889)