回复：回复：回复：you should append the extra

anyway ,thanks alot. ,but what i mentioned is how to recover the path value to the original system one,i know where is system variable is, but change which item, classpath ,or path,and the value should be what ??the command of java is okwhen it runs in dos , what i want now is the system dos command,how to get it finction back__??cos i lost some value in properites > advanced > envrion variable > system variable