第一次使用时，好过一次。有没有大牛，帮忙分析一下。
错误信息如下：
Exception in thread "main" java.lang.NoClassDefFoundError: edu.tsinghua.lumaqq.qq.QQClient
at java.lang.Class.initializeClass(libgcj.so.70)
at edu.tsinghua.lumaqq.LumaQQ.main(LumaQQ.java:143)
Caused by: java.lang.ClassNotFoundException: java.util.Queue not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/opt/LumaQQ/lib/xerces.jar,file:/opt/LumaQQ/lib/swt.jar,file:/opt/LumaQQ/lib/poifs.jar,file:/opt/LumaQQ/lib/org.eclipse.ui.workbench_3.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.osgi_3.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.jface_3.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.emf.ecore.xmi_2.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.emf.ecore_2.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.emf.common_2.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.core.runtime_3.1.0.jar,file:/opt/LumaQQ/lib/org.eclipse.core.resources_3.1.0.jar,file:/opt/LumaQQ/lib/lumaqq_xsd.jar,file:/opt/LumaQQ/lib/lumaqq_template.jar,file:/opt/LumaQQ/lib/lumaqq.jar,file:/opt/LumaQQ/lib/log4j-1.2.8.jar,file:/opt/LumaQQ/lib/jql_protocol.jar,file:/opt/LumaQQ/lib/jql_net.jar,file:/opt/LumaQQ/lib/je.jar,file:/opt/LumaQQ/lib/jdom.jar,file:/opt/LumaQQ/lib/commons-logging.jar,file:/opt/LumaQQ/lib/commons-codec.jar,file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.70)
at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.70)
at java.lang.ClassLoader.loadClass(libgcj.so.70)
at java.lang.ClassLoader.loadClass(libgcj.so.70)
at java.lang.Class.initializeClass(libgcj.so.70)
...1 more
