Java实现简单学生信息管理系统

Java实现简单学生信息管理系统

最近在学习java，所以写了个学生信息管理系统，话不多说，上代码。

Student.java:

package com.mumu;

public class Student { //定义学生类

private String name;

private String age;

private String id;

private String room_num;

private int math;

private int english;

private int physic;

public Student() {//无参构造方法

}

public Student(String name, String age, String id, String room_num, int math, int english, int physic) {

this.name = name;

this.age = age;

this.id = id;

this.room_num = room_num;

this.math = math;

this.english = english;

this.physic = physic;

}

//Alt+ INSERT键，可自动生成构造方法

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getAge() {

return age;

}

public void setAge(String age) {

this.age = age;

}

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getRoom_num() {

return room_num;

}

public void setRoom_num(String room_num) {

this.room_num = room_num;

}

public int getMath() {

return math;

}

public int getEnglish() {

return english;

}

public int getPhysic() {

return physic;

}

public void setMath(int math) {

this.math = math;

}

public void setEnglish(int english) {

this.english = english;

}

public void setPhysic(int physic) {

this.physic = physic;

}

}

StudentManager .java:

package com.mumu;

import java.util.ArrayList;

import java.util.Scanner;

public class StudentManager {

public static void main(String[] args) {

ArrayList array=new ArrayList<>();

menu(array);

}

public static void menu(ArrayList array)//菜单

{

while(true)

{

System.out.println("^^^^^^^^welcom to my System^^^^^^^^");

System.out.println("please input your choice");

System.out.println("1.add students' information");

System.out.println("2.remove students' information");

System.out.println("3.revise students' information");

System.out.println("4.look over students' information");

System.out.println("5.find students' information");

System.out.println("6.quit the system");

Scanner sc=new Scanner(System.in);

String choice =sc.nextLine();

switch(choice)

{

case "1":

adding(array);

break;

case "2":

removing(array);

break;

case "3":

revising(array);

break;

case "4":

look_over(array);

break;

case "5":

serching(array);

case "6":

quiting();

break;

default:

System.out.println("error!");

System.exit(0);

}

}

}

public static void adding(ArrayList array)//添加学生信息

{//录入的学生数据录入给成员变量

System.out.println("please input student's id");

Scanner sc=new Scanner(System.in);

String stu_num=sc.nextLine();

if(is_used(array,stu_num)==false)

{

System.out.println("please input student's name");

String stu_name=sc.nextLine();

System.out.println("please input student's age");

String stu_age=sc.nextLine();

System.out.println("please input student's room number");

String stu_addr=sc.nextLine();

System.out.println("do you want to add student's grade?yes/no");

//创建学生对象

Student st=new Student();

st.setAge(stu_age);

st.setId(stu_num);

st.setName(stu_name);

st.setRoom_num(stu_addr);

//添加学生成绩

String cho=sc.nextLine();

if(cho=="yes")

{

System.out.println("please input student's math grade");

int stu_math=sc.nextInt();

System.out.println("please input student's english grade");

int stu_english= sc.nextInt();

System.out.println("please input student's physic grade");

int stu_physic= sc.nextInt();

st.setMath(stu_math);

st.setEnglish(stu_english);

st.setPhysic(stu_physic);

}

//将学生对象添加到集合中

array.add(st);

System.out.println("add successfully");

}

else

{

System.out.println("you are already input information of this student");

}

}

public static void removing(ArrayList array)//删除学生信息

{

Scanner sc=new Scanner(System.in);

System.out.println("please input student's number");

String stu_num=sc.nextLine();

for(int i=0;i

{

Student st=array.get(i);

if(st.getId().equals(stu_num))

{

array.remove(i);

break;

}

else

{

System.out.println("there is no information of that student");

}

}

System.out.println("remove successfully");

}

public static void revising(ArrayList array)//修改学生信息

{

Scanner sc=new Scanner(System.in);

System.out.println("please input stubent's id");

String stu_num=sc.nextLine();

System.out.println("please input student's new name");

String stu_name=sc.nextLine();

System.out.println("please input student's new id");

String stu_id=sc.nextLine();

System.out.println("please input student's new age");

String stu_age=sc.nextLine();

System.out.println("please input student's new room_number");

String stu_add=sc.nextLine();

System.out.println("do you want to revise student's grade?yes/no");

//创建学生对象

Student st1=new Student();

st1.setRoom_num(stu_add);

st1.setName(stu_name);

st1.setId(stu_id);

st1.setAge(stu_age);

String cho= sc.nextLine();

if(cho=="yes")

{

System.out.println("please input student's new math grade");

int stu_math=sc.nextInt();

System.out.println("please input student's new english grade");

int stu_english=sc.nextInt();

System.out.println("please input student's new physic grade");

int stu_physic=sc.nextInt();

st1.setEnglish(stu_english);

st1.setMath(stu_math);

st1.setPhysic(stu_physic);

}

for(int i=0;i< array.size();i++)

{

Student st2=array.get(i);

if(st2.getId().equals(stu_num))//判断输入的学号是否在array里面

{

array.set(i,st1);

break;

}

else

{

System.out.println("there is no information of that student");

}

}

System.out.println("revise successfully");

}

public static void look_over(ArrayList array)//查看所有学生信息

{

if(array.size()==0)//先判断集合是否为空

{

System.out.println("there is no information,please input information firstly");

}

else

{

System.out.println("number\tname\tage\troom_number\tmath_grade\tenglish_grade\tphysic_grade");

for(int i=0;i

{

Student st=array.get(i);

System.out.println(st.getId()+"\t"+st.getName()+"\t"+st.getAge()+"\t"+st.getRoom_num()+"\t"

+st.getMath()+"\t"+st.getEnglish()+"\t"+st.getPhysic());

http:// }

}

}

public static void quiting() //退出系统

{

System.exit(0);

}

public static boolean is_used(ArrayList array,String sid)//判断学号是否重复

{

boolean temp=false;

for(int i=0;i< array.size();i++)

{

Student st=array.get(i);

if(st.getId().equals(sid))

{

temp=true;

break;

}

}

return temp;

}

public static void serching(ArrayList array)//通过学号查找

{

System.out.println("please input id of the student you want to find");

Scanner sc=new Scanner(System.in);

String stu_num=sc.nextLine();

for(int i=0;i< array.size();iUwoYJHllb++)

{

Student st= array.get(i);

if(st.getId().equals(stu_num))

{

System.out.println(st.getId()+"\t"+st.getName()+"\t"+st.getAge()+"\t"+st.getRoom_num()+"\t"

+st.getMath()+"\t"+st.getEnglish()+"\t"+st.getPhysic());

}

else

{

System.out.println("there is no information of that student");

}

}

}

}

代码是用IDEA写的，因为是初学者，功能相对简单，如有问题欢迎指正哦。

更多学习资料请关注专题《管理系统开发》。

{

Student st=array.get(i);

if(st.getId().equals(stu_num))

{

array.remove(i);

break;

}

else

{

System.out.println("there is no information of that student");

}

}

System.out.println("remove successfully");

}

public static void revising(ArrayList array)//修改学生信息

{

Scanner sc=new Scanner(System.in);

System.out.println("please input stubent's id");

String stu_num=sc.nextLine();

System.out.println("please input student's new name");

String stu_name=sc.nextLine();

System.out.println("please input student's new id");

String stu_id=sc.nextLine();

System.out.println("please input student's new age");

String stu_age=sc.nextLine();

System.out.println("please input student's new room_number");

String stu_add=sc.nextLine();

System.out.println("do you want to revise student's grade?yes/no");

//创建学生对象

Student st1=new Student();

st1.setRoom_num(stu_add);

st1.setName(stu_name);

st1.setId(stu_id);

st1.setAge(stu_age);

String cho= sc.nextLine();

if(cho=="yes")

{

System.out.println("please input student's new math grade");

int stu_math=sc.nextInt();

System.out.println("please input student's new english grade");

int stu_english=sc.nextInt();

System.out.println("please input student's new physic grade");

int stu_physic=sc.nextInt();

st1.setEnglish(stu_english);

st1.setMath(stu_math);

st1.setPhysic(stu_physic);

}

for(int i=0;i< array.size();i++)

{

Student st2=array.get(i);

if(st2.getId().equals(stu_num))//判断输入的学号是否在array里面

{

array.set(i,st1);

break;

}

else

{

System.out.println("there is no information of that student");

}

}

System.out.println("revise successfully");

}

public static void look_over(ArrayList array)//查看所有学生信息

{

if(array.size()==0)//先判断集合是否为空

{

System.out.println("there is no information,please input information firstly");

}

else

{

System.out.println("number\tname\tage\troom_number\tmath_grade\tenglish_grade\tphysic_grade");

for(int i=0;i

{

Student st=array.get(i);

System.out.println(st.getId()+"\t"+st.getName()+"\t"+st.getAge()+"\t"+st.getRoom_num()+"\t"

+st.getMath()+"\t"+st.getEnglish()+"\t"+st.getPhysic());

http:// }

}

}

public static void quiting() //退出系统

{

System.exit(0);

}

public static boolean is_used(ArrayList array,String sid)//判断学号是否重复

{

boolean temp=false;

for(int i=0;i< array.size();i++)

{

Student st=array.get(i);

if(st.getId().equals(sid))

{

temp=true;

break;

}

}

return temp;

}

public static void serching(ArrayList array)//通过学号查找

{

System.out.println("please input id of the student you want to find");

Scanner sc=new Scanner(System.in);

String stu_num=sc.nextLine();

for(int i=0;i< array.size();iUwoYJHllb++)

{

Student st= array.get(i);

if(st.getId().equals(stu_num))

{

System.out.println(st.getId()+"\t"+st.getName()+"\t"+st.getAge()+"\t"+st.getRoom_num()+"\t"

+st.getMath()+"\t"+st.getEnglish()+"\t"+st.getPhysic());

}

else

{

System.out.println("there is no information of that student");

}

}

}

}

代码是用IDEA写的，因为是初学者，功能相对简单，如有问题欢迎指正哦。

更多学习资料请关注专题《管理系统开发》。

{

Student st=array.get(i);

System.out.println(st.getId()+"\t"+st.getName()+"\t"+st.getAge()+"\t"+st.getRoom_num()+"\t"

+st.getMath()+"\t"+st.getEnglish()+"\t"+st.getPhysic());

http:// }

}

}

public static void quiting() //退出系统

{

System.exit(0);

}

public static boolean is_used(ArrayList array,String sid)//判断学号是否重复

{

boolean temp=false;

for(int i=0;i< array.size();i++)

{

Student st=array.get(i);

if(st.getId().equals(sid))

{

temp=true;

break;

}

}

return temp;

}

public static void serching(ArrayList array)//通过学号查找

{

System.out.println("please input id of the student you want to find");

Scanner sc=new Scanner(System.in);

String stu_num=sc.nextLine();

for(int i=0;i< array.size();iUwoYJHllb++)

{

Student st= array.get(i);

if(st.getId().equals(stu_num))

{

System.out.println(st.getId()+"\t"+st.getName()+"\t"+st.getAge()+"\t"+st.getRoom_num()+"\t"

+st.getMath()+"\t"+st.getEnglish()+"\t"+st.getPhysic());

}

else

{

System.out.println("there is no information of that student");

}

}

}

}

代码是用IDEA写的，因为是初学者，功能相对简单，如有问题欢迎指正哦。

更多学习资料请关注专题《管理系统开发》。

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