学生寝室查寝打卡系统（Java课设）

import java.util.Iterator; import java.util.List; import java.util.Random; import java.util.Scanner; public class Manage { public static List<Student> list = Student.getList(); public static Scanner scanner = new Scanner(System.in); public static void add(){ System.out.println("请输入姓名"); String name=scanner.next(); System.out.println("请输入宿舍号"); String suNum=scanner.next(); System.out.println("请输入打卡状态(1表示打卡，0表示未打卡)"); String status=scanner.next(); Student student = new Student(name, suNum, status); list.add(student); System.out.println("添加成功！"); Menu.Menu(); } public static void select(){ Random random = new Random(); int n=1; for (int i=1;i<=48;i++){ Student student = new Student(); student.setName("student"+i); student.setSuNum(String.valueOf(n)); if (i==6){ n=2; }else if (i==12){ n=3; }else if (i==18){ n=4; }else if (i==24){ n=5; }else if (i==30){ n=6; }else if (i==36){ n=7; }else if (i==42){ n=8; } student.setStatus(String.valueOf(random.nextInt(2))); Student.getList().add(student); } int sum1=0,sum2=0,sum3=0,sum4=0,sum5=0,sum6=0,sum7=0,sum8=0,sum9=0; for (Student student : list) { if (student.getSuNum().equals("1")&&student.getStatus().equals("1")){ sum1++; }else if (student.getSuNum().equals("2")&&student.getStatus().equals("1")){ sum2++; }else if (student.getSuNum().equals("3")&&student.getStatus().equals("1")){ sum3++; }else if (student.getSuNum().equals("4")&&student.getStatus().equals("1")){ sum4++; }else if (student.getSuNum().equals("5")&&student.getStatus().equals("1")){ sum5++; }else if (student.getSuNum().equals("6")&&student.getStatus().equals("1")){ sum6++; }else if (student.getSuNum().equals("7")&&student.getStatus().equals("1")){ sum7++; }else if (student.getSuNum().equals("8")&&student.getStatus().equals("1")){ sum8++; }else if (student.getSuNum().equals("9")&&student.getStatus().equals("1")){ sum9++; } } System.out.println("寝室1号的打卡人数是："+sum1+"，寝室1号的打卡率是："+String.format("%.2f", sum1/6.0)); System.out.println("寝室2号的打卡人数是："+sum2+"，寝室2号的打卡率是："+String.format("%.2f", sum2/6.0)); System.out.println("寝室3号的打卡人数是："+sum3+"，寝室3号的打卡率是："+String.format("%.2f", sum3/6.0)); System.out.println("寝室4号的打卡人数是："+sum4+"，寝室4号的打卡率是："+String.format("%.2f", sum4/6.0)); System.out.println("寝室5号的打卡人数是："+sum5+"，寝室5号的打卡率是："+String.format("%.2f", sum5/6.0)); System.out.println("寝室6号的打卡人数是："+sum6+"，寝室6号的打卡率是："+String.format("%.2f", sum6/6.0)); System.out.println("寝室7号的打卡人数是："+sum7+"，寝室7号的打卡率是："+String.format("%.2f", sum7/6.0)); System.out.println("寝室8号的打卡人数是："+sum8+"，寝室8号的打卡率是："+String.format("%.2f", sum8/6.0)); System.out.println("寝室9号的打卡人数是："+sum9+"，寝室9号的打卡率是："+String.format("%.2f", sum9/2.0)); Menu.Menu(); } public static void selectAll(){ int sumd=0,sum=0; for (Student student : list) { if (student.getStatus().equals("1")){ sumd++; } sum++; } double zsum = sumd/Double.valueOf(sum); System.out.println("总人数是："+sum+"今日总的打卡人数是："+sumd+"，总打卡率是："+String.format("%.2f", zsum)); Menu.Menu(); } }