java.io.IOException:

对，设备没有足够空间，补充，at是“位于”的意思，你这里的at连接的是它和下一个at之间的语句，也就是这样的意思：
java.io.IOException: No space left on device
at java.io.FileOutputStream.writeBytes(Native Method)
at java.io.FileOutputStream.write(FileOutputStream.java:257)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:69)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:127)

应该很清楚了把，不要把它想的太深奥这里有个异常，你看看这个异常的格式：
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.continueLaunch(Unknown Source)
at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: weblogic.utils.AssertionError: ***** ASSERTION FAILED *****[ Failed to generate class for weblogic.jndi.internal.ServerNamingNode_WLStub ]
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:662)
at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:651)
at weblogic.rmi.extensions.StubFactory.getStub(StubFactory.java:59)
at weblogic.jndi.WLInitialContextFactoryDelegate.newRootNamingNodeStub

JAVA IO 错误，设备没有足够空间
出错在java.io.FileOutputStream.writeBytes方法，
java.io.FileOutputStream.write（FileOutputStream.java第257行）
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java第69行)
java.io.BufferedOutputStream.flush(BufferedOutputStream.java第127行)

上面的答复已经很正点了，No space left on device，在硬盘上没有剩余的空间，不知道你在硬盘上写了什么东东？