利用list实现了一个简单的消费项目列表管理程序，用java语言实现了LinkedList类，List类，Expense类，ItemExpense类，ItemDataExpense类，是一个很好的教学用程序。-Implementing an Expenselist using a class of list,supply the class of List,Expense,ItemExpense,ItemDataExpense.It is a good tutorial program .