实验目的：掌握使用基本控件和合适布局管理器进行界面设计的方法，掌握简单的事件处理方法。能根据要求设计出美观界面并实现所要求功能。

      实验内容：实现成绩的查询和排序。具体要求如下：使用JTabbedPane，建立三个选项卡“成绩输入”、“成绩查询”、“成绩排序”

①          成绩输入：从界面上输入学生的学号和成绩，点击“确认”按钮进行保存。

②          成绩查询：输入学生的学号，点击“查询”按钮，显示该生成绩。

③          成绩排序：点击“排序”按钮，将按成绩从高低显示学生的学号和成绩。

请选择合适的布局管理。-Purpose: to master the basic controls and proper use of the layout manager interface design methods, grasp simple event handling methods. The required function can be designed according to the requirements and achieve attractive interface. Experiment: achieve achievement queries and sorting. Specific requirements are as follows: Using JTabbedPane, establish three tabs'　performance input " ,"　query results " ,"　performance sorting " ① results Entry: number of students learning and achievement　the interface, click"　OK "　button to save. ② query results: students enter school number, click on the " Search"　button to display the student achievement. ③ Results Sort: Click on the " Sort"　button will display the results　the level of student achievement and school number. Please　the appropriate layout manager.