public Vector DisplayCourse() throws Exception{

 Vector<Vector<String>> displaycourse=new Vector<Vector<String>>();

 ResultSet rs=displayCourse.executeQuery();//sql 语句

 while(rs.next()){
 Vector<String> course=new Vector<String>();
 course.add(rs.getString(1));
 course.add(rs.getString(2));
 displaycourse.add(course);

 }
 return displaycourse;
 }

//...............

  data=queries.DisplayCourse();
 header=new Vector<String>();
 String id="Course ID";
header.add(id);
String name="Course Name";
header.add(name);//源代码片段来自云代码http://yuncode.net