我是新手 刚搭好环境 运行起来了 用的是在myeclipse中的j2me wtk
但是 我点了 项目右键 j2me 下的 create package 他就跳出来一个叫错误 

 Errors occurred during the build.
  Errors running builder 'Preverification' on project 'Text'.
  org.eclipse.jdt.internal.core.JavaModel.getTarget(Lorg/eclipse/core/resources/IContainer;Lorg/eclipse/core/runtime/IPath;Z)Ljava/lang/Object;


在这之后 我那项目就运行不起来了 都是

Usage: emulator <command> [<option> ...]

Commands:
  -help Print this usage info and exit
  -version Display version information about the emulator and exit
  -Xmain:<main class name>
  Run the main method of a Java class, as in Java SE
  -Xquery If followed by "-Xdevice" option, prints detailed info
  about the specified device, including the supported
  commands list. By default, prints information about all the
  available devices.
  -Xjam[:install=<JAD file url> | force | list | storageNames |
  run=[<storage name> | <storage number>][,<MIDlet class name>] |
  remove=[<storage name> | <storage number> | all] |
  transient=<JAD file url>]
  Java Application Manager and support
  for Over The Air provisioning (OTA)
  -Xutility:UtilityName[,<argument>[,...]]
  Run a utility
  -Xxlet:classpath=<class path>,class=<fully qualified name>[,arg=<argument>]*
  Run Xlet application
  Options
  classpath The class path containing Xlet
  class The fully qualified name of the Xlet to be executed
  arg An argument to be passed to the Xlet context

  -Xautotest:<JAD file url>
  Run in autotest mode
  Generic options you CANNOT use with this command:
  -Xdebug
  -Xrunjdwp:<JDWP options>
  -Xprofile
  -Xnetmon
  -Xdescriptor:<JAD file name>
  The JAD file to be executed

Generic options:
  -classpath <class_path> | -cp <class_path>
  The class path for the VM
  -D<name>=<value> Set a system property
  -Xdebug Use a remote debugger
  -Xrunjdwp:transport=<transport>,address=<address>[,server=y|n,suspend=y|n]
  Debugging options
  -Xdevice:<device_name> 
  Use the specified device. If this option is omitted, the
  default device is used, except for the command -Xquery.
  Please note that every device supports a limited set of
  commands, not all the ones listed above! To list the
  commands supported by this device run:
  emulator.exe -Xquery -Xdevice:<device_name>
  -Xdomain:<domain_name>
  Set the MIDlet suite's security domain
  -Xmemmon
  Enable memory monitor.
  -Xnetmon[:suspend=y|n]
  Enable netwok monitor. The "suspend" option means whether
  to suspend the application run until network monitor
  connects.
  -Xprofile[:system=<y/n>,file=<file>]
  profile the application CPU usage
  Options (all of them optional):
  system Whether to profile system classes.