Shulou(Shulou.com)06/01 Report--

This article will explain in detail how Java implements the IO version of the student management system. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

The details are as follows

Illustration:

Cade:

Student.java

/ * * this is my student class * / public class Student {/ / Student ID private String id; / / name private String name; / / Age private String age; / / residence private String address; public Student () {} public Student (String id, String name, String age, String address) {this.id = id; this.name = name This.age = age; this.address = address;} public String getId () {return id;} public void setId (String id) {this.id = id;} 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 getAddress () {return address;} public void setAddress (String address) {this.address = address;}}

Studentmangager class

Import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.ArrayList;import java.util.Scanner / * * this is the main class of my student management system * * the steps are as follows: * A: define the student class * B: code writing of the main interface of the student management system * C: view of the student management system all student code writing * D: student management system add student code writing * E: student management system delete student code writing * F: modification of student management system student code writing * / public class StudentManagerTest {public static void main (String [] args) throws IOException {/ / definition file path String fileName = "students.txt" / / in order for the program to come back here, we use cyclic while (true) {/ / this is the main interface of the student management system System.out.println ("- Welcome to the student management system -"); System.out.println ("1 View all students") System.out.println ("2 add students"); System.out.println ("3 delete students"); System.out.println ("4 modify students"); System.out.println ("5 quit"); System.out.println ("Please enter your choice:") / / create keyboard entry object Scanner sc = new Scanner (System.in); String choiceString = sc.nextLine (); / / use switch statement to select switch (choiceString) {case "1": / / View all students findAllStudent (fileName); break Case "2": / / add student addStudent (fileName); break; case "3": / / delete student deleteStudent (fileName); break Case "4": / / modify student updateStudent (fileName); break; case "5": default: System.out.println ("Thank you for using"); System.exit (0); / / JVM quit break Read data from file to collection public static void readData (String fileName,ArrayList array) throws IOException {/ / create input buffered stream object BufferedReader br = new BufferedReader (new FileReader (fileName)); String line; while ((line=br.readLine ())! = null) {String [] datas = line.split (",") Student s = new Student (); s.setId (datas [0]); s.setName (datas [1]); s.setAge (datas [2]); s.setAddress (datas [3]); array.add (s);} br.close () } / / write the data in the collection to the file public static void writeData (String fileName,ArrayList array) throws IOException {/ / create the output buffered stream object BufferedWriter bw = new BufferedWriter (new FileWriter (fileName)); for (int xstream 0; x

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