Implementation of Simple Student Information Management System with Java
- 2021-11-13 07:25:16
- OfStack
Recently in the study of Java, so wrote a student information management system, words do not say, on the code.
Student.java:
package com.mumu;
public class Student { // Define student classes
private String name;
private String age;
private String id;
private String room_num;
private int math;
private int english;
private int physic;
public Student() {// Parametric construction method
}
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 Key, the constructor method can be automatically generated
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<Student> array=new ArrayList<>();
menu(array);
}
public static void menu(ArrayList<Student> array)// Menu
{
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<Student> array)// Add Student Information
{// The entered student data is entered into the member variable
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");
// Create Student Objects
Student st=new Student();
st.setAge(stu_age);
st.setId(stu_num);
st.setName(stu_name);
st.setRoom_num(stu_addr);
// Add student grades
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);
}
// To add a student object to a collection
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<Student> array)// Delete student information
{
Scanner sc=new Scanner(System.in);
System.out.println("please input student's number");
String stu_num=sc.nextLine();
for(int i=0;i<array.size();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<Student> array)// Modify student information
{
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");
// Create Student Objects
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))// Judge whether the inputted student number is in array Inside
{
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<Student> array)// View all student information
{
if(array.size()==0)// First determine whether the set is empty
{
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<array.size();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());
}
}
}
public static void quiting() // Exit the system
{
System.exit(0);
}
public static boolean is_used(ArrayList<Student> array,String sid)// Judge whether the student number is duplicate
{
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<Student> array)// Search by student number
{
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();i++)
{
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");
}
}
}
}The code is written with IDEA, because it is a beginner, the function is relatively simple, if there is a problem welcome to correct oh.
For more learning materials, please pay attention to the topic "Management System Development".