北邮java作业

package liujiajia; import java.io.*; //import java.util.Scanner; public class _2014211512_刘佳佳_1_StudentListTest { public static void main(String[] args) throws IOException{ // TODO 自动生成的方法存根 _2014211512_刘佳佳_1_StudentList list=new _2014211512_刘佳佳_1_StudentList(10); //Scanner Sc=new Scanner(System.in); System.out.println("1.增加1个学生 2.根据学号删除学生 3.根据位置删除学生\n4.判断是否为空 5.根据位置返回学生 6.根据学号返回学生\n7.输出全部学生信息 8.退出程序\n"); BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); System.out.println("请输入您的操作："); int over=0; while(over!=1) { switch(Integer.parseInt(in.readLine())) { case 1: String number,name; int markForMath,markForEnglish,markForScience; System.out.println("请输入学生信息：\n"); System.out.println("学号："); number=in.readLine(); System.out.println("\n姓名："); name=in.readLine(); System.out.println("\n数学成绩："); markForMath=Integer.parseInt(in.readLine()); System.out.println("\n英语成绩："); markForEnglish=Integer.parseInt(in.readLine()); System.out.println("\n科学成绩："); markForScience=Integer.parseInt(in.readLine()); _2014211512_刘佳佳_1_Student stu=new _2014211512_刘佳佳_1_Student(number,name); stu.enterMarks(markForMath, markForEnglish, markForScience); if(list.add(stu)) System.out.println("\n添加成功"); else System.out.println("添加失败"); break; case 2: String stuNumber; System.out.println("请输入要删除学生的学号："); stuNumber=in.readLine(); if(list.remove(stuNumber)) System.out.println("删除成功"); else System.out.println("删除失败"); break; case 3: System.out.println("请输入要删除第几个学生："); if(list.remove(Integer.parseInt(in.readLine()))) System.out.println("\n删除成功"); else System.out.println("\nError"); break; case 4: if(list.isEmpty()) System.out.println("\n队列为空"); else System.out.println("\n队列不为空"); break; case 5: System.out.println("\n请输入学生的位置："); if(list.getItem(Integer.parseInt(in.readLine()))!=null) System.out.println(list.getItem(Integer.parseInt(in.readLine())).toString()); else System.out.println("\n对不起，没有对应的学生"); break; case 6: System.out.println("\n请输入学生的学号："); if(list.getItem(in.readLine())!=null) System.out.println(list.getItem(in.readLine()).toString()); else System.out.println("\n对不起，没有对应的学生"); break; case 7: System.out.println("\n---目前有"+(list.getTotal())+"个学生，信息为---:"); for(int i=0;i<=(list.getTotal())-1;i++) { System.out.println((list.getItem(i)).toString()); } break; case 8: over=1; System.exit(0); default: System.out.println("请输入正确指令！！！"); break; } System.out.println("\n---目前有"+(list.getTotal())+"个学生，信息为---:"); for(int i=0;i<=(list.getTotal())-1;i++) { System.out.println((list.getItem(i)).toString()); } System.out.println("\n请输入您的操作："); } } }