本文实例为大家分享了java实现简单学生管理系统的具体代码,供大家参考,具体内容如下 功能: 1.增加学生 2.查看学生 3.根据学号修改学生信息 4.根据学号查看某一个学生信息 5.根据
本文实例为大家分享了java实现简单学生管理系统的具体代码,供大家参考,具体内容如下
功能:
1.增加学生
2.查看学生
3.根据学号修改学生信息
4.根据学号查看某一个学生信息
5.根据性别查看同性别的所有学生
6.根据学号删除某一个学生
7.按照学号升序排序(默认)
8.按照年龄降序排序
Student 类- - -学生的javabean类
package com.studentByArray.www; public class Student { //定义一个Student类{学号、姓名、年龄、性别} private String Sno; private String name; private int age; private String sex; public Student() { super(); // TODO Auto-generated constructor stub } public Student(String sno, String name, int age, String sex) { super(); Sno = sno; this.name = name; this.age = age; this.sex = sex; } public String getSno() { return Sno; } public void setSno(String Sno) { this.Sno = Sno; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } @Override public String toString() { return "Student [Sno=" + Sno + ", name=" + name + ", age=" + age + ", sex=" + sex + "]"; } }
StudentOperate 类- - -学生管理系统功能实现类
package com.studentByArray.www; import java.util.ArrayList; public class StudentOperate { ArrayList<Student> list = new ArrayList<Student>(); //增加学生 public boolean addStudent(Student student) { for(int i=0;i<list.size();i++) { Student s = list.get(i); if(s.getSno().equals(student.getSno())) { return false; }else { list.add(student); return true; } } list.add(student); return true; } //查看学生信息 public void showStudent() { if(list.size() == 0) { System.out.println("没有学生信息"); } for(Student stu : list) { System.out.println("学生学号: "+stu.getSno()+" "+"学生姓名: "+stu.getName()+" "+"学生年龄: "+stu.getAge()+" "+"学生性别: "+stu.getSex()); } } //根据学号修改学生信息 public boolean updataBySno(Student student) { if(student.getSno() == null) { return false; } for(int i=0;i<list.size();i++) { Student s = list.get(i); if(s.getSno().equals(student.getSno())) { s.setName(student.getName()); s.setAge(student.getAge()); s.setSex(student.getSex()); return true; } } return false; } //根据学号查看某一个学生信息 public Student showStuBySno(String sno) { if(sno == null) { return null; } for(int i=0;i<list.size();i++) { Student s = list.get(i); if(s.getSno().equals(sno)) { return s; } } return null; } //根据性别查看同性别的所有学生 public ArrayList<Student> selectStuByAge(String sex) { ArrayList<Student> newStu = new ArrayList<Student>(); for(int i=0;i<list.size();i++) { Student s = list.get(i); if(s.getSex().equals(sex)) { newStu.add(s); } } return newStu; } //根据学号删除某一个学生 public boolean deleteBySno(String sno) { Student stu = this.showStuBySno(sno); if(stu!=null) { list.remove(stu); return true; } return false; } //按照学号升序排序(默认) public ArrayList<Student> sortBySno() { for(int i=0;i<list.size()-1;i++) { for(int j=0;j<list.size()-1-i;j++) { if(list.get(j).getSno().compareTo(list.get(j+1).getSno())>0) { Student temp = list.get(j); list.set(j, list.get(j+1)); list.set(j+1, temp); } } } return list; } //按照年龄降序排序 public ArrayList<Student> sortByAge() { for(int i=0;i<list.size()-1;i++) { for(int j=0;j<list.size()-1-i;j++) { if(list.get(j).getAge()<list.get(j+1).getAge()) { Student temp = list.get(j); list.set(j, list.get(j+1)); list.set(j+1, temp); } } } return list; } }
StudentTest 类- - -操作界面测试类
package com.studentByArray.www; import java.util.ArrayList; import java.util.Scanner; public class StudentTest { public static void main(String[] args) { StudentOperate stuO = new StudentOperate(); Scanner input = new Scanner(System.in); boolean choose = true; while(choose) { System.out.println("1.增加学生"); System.out.println("2.查看学生"); System.out.println("3.根据学号修改学生信息"); System.out.println("4.根据学号查看某一个学生信息"); System.out.println("5.根据性别查看同性别的所有学生"); System.out.println("6.根据学号删除某一个学生"); System.out.println("7.按照学号升序排序(默认)"); System.out.println("8.按照年龄降序排序"); System.out.print("请输入你的选择:"); int i = input.nextInt(); switch(i){ case 1: { System.out.println("请输入你要增加的学生学号:"); String sno = input.next(); System.out.println("请输入要增加的学生姓名:"); String name = input.next(); System.out.println("请输入要增加的学生年龄:"); int age = input.nextInt(); System.out.println("请输入要增加的学生性别:"); String sex = input.next(); Student stu = new Student(); stu.setSno(sno); stu.setName(name); stu.setAge(age); stu.setSex(sex); boolean receive = stuO.addStudent(stu); if(receive) { System.out.println("添加成功!"); }else { System.out.println("输入的学号已存在!"); } System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 2: { stuO.showStudent(); System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 3: { System.out.println("请输入你要修改的学生学号:"); String sno = input.next(); System.out.println("将学生姓名改为:"); String name = input.next(); System.out.println("将学生年龄改为:"); int age = input.nextInt(); System.out.println("将学生性别改为:"); String sex = input.next(); Student stu = new Student(); stu.setSno(sno); stu.setName(name); stu.setAge(age); stu.setSex(sex); boolean receive = stuO.updataBySno(stu); if(receive) { System.out.println("修改成功!"); }else { System.out.println("修改失败!"); } System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 4: { System.out.println("请输入要查询的学生学号:"); String sno = input.next(); Student receive = stuO.showStuBySno(sno); if(receive!=null) { // String stu = receive.toString(); System.out.println(receive); }else { System.out.println("没有查询到此学生!"); } System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 5: { System.out.println("请输入你要查询的学生性别:"); String sex = input.next(); ArrayList<Student> newStu= stuO.selectStuByAge(sex); System.out.println(newStu); System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 6: { System.out.println("请输入要删除的学生学号:"); String sno = input.next(); boolean receive = stuO.deleteBySno(sno); if(receive) { System.out.println("删除成功!"); }else { System.out.println("删除失败!"); } System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 7: { ArrayList<Student> stus = stuO.sortBySno(); System.out.println(stus); System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } case 8: { ArrayList<Student> stus = stuO.sortByAge(); System.out.println(stus); System.out.println("请问是否继续:(true/false)"); choose = input.nextBoolean(); break; } } } } }
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