28 Commits

Author SHA1 Message Date
f2bf4a21f1 emopで検索、登録、更新、削除の追加をしました。 2026-09-24 16:34:54 +09:00
b66b0d1886 3日目段階9完了しました 2026-09-18 14:58:19 +09:00
d6d4cb59b1 3日目8段階完了しました 2026-09-18 14:00:25 +09:00
538240279c 三日目段階7完了 2026-09-18 13:09:29 +09:00
f91230d020 三日目段階6完了しました 2026-09-18 12:45:19 +09:00
4217c89629 3日目段階5完了しました 2026-09-18 11:07:24 +09:00
8c1fba011a 2日目段階9完了しました 2026-09-18 10:16:07 +09:00
5f46aaec08 一日目段階9完了しました 2026-09-18 10:04:17 +09:00
91689ca055 一日目段階8完了しました 2026-09-18 09:49:49 +09:00
139165eaa5 1日目の段階7完了しました 2026-09-16 16:30:59 +09:00
5fe3b0120f 段階4完了 2026-09-16 14:53:11 +09:00
eb595c96fc 段階3完了 2026-09-16 14:24:30 +09:00
b0f39ec6c9 段階2完了しました 2026-09-16 14:19:34 +09:00
35764bee9e 段階1完了しました。 2026-09-16 13:20:13 +09:00
4b225c0396 段階8完了しました。 2026-09-15 16:37:02 +09:00
4e4f518253 段階7完了しました。 2026-09-15 15:57:07 +09:00
f8295163ed 段階6完了しました。 2026-09-15 15:41:53 +09:00
b0d903c164 段階5完了しました。 2026-09-15 15:29:55 +09:00
181604c004 段階4完了しました。 2026-09-15 14:50:52 +09:00
6ce33cfdc9 段階3完了しました。 2026-09-15 14:32:11 +09:00
6362a10a23 段階2完了しました。 2026-09-15 13:50:38 +09:00
d7c1f2b251 段階1完了しました。 2026-09-15 12:57:23 +09:00
eda72f9f06 段階6完了しました。 2026-09-14 16:48:45 +09:00
fdcb186a01 段階5完了しました。 2026-09-14 16:26:28 +09:00
616d3d006a 段階4完了しました。 2026-09-14 16:19:04 +09:00
f1c2d91ae7 段階3完了しました。 2026-09-14 16:07:43 +09:00
73723669c5 段階2完了しました。 2026-09-14 15:02:58 +09:00
73c8facacd 段階1完了しました。 2026-09-14 14:38:21 +09:00
19 changed files with 314 additions and 312 deletions

1
.gitignore vendored
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@@ -25,4 +25,3 @@ hs_err_pid*
replay_pid*
/.metadata/
/bin/

View File

@@ -1,10 +1,7 @@
public abstract class BaseData {
public abstract class BaseDate {
public abstract String toString();
public abstract String toCSV();
public abstract String getPrimaryKeyValue();
}

View File

@@ -2,13 +2,16 @@
public class BasicCheck1 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
Book book1 = new Book();
Book book2 = new Book("銀河鉄道の夜", "宮沢賢治", 500);
System.out.println(book1.title + "\n" + book1.author + "\n" + book1.price);
System.out.println(book2.title + "\n" + book2.author + "\n" + book2.price);
System.out.println(book1.title);
System.out.println(book1.author);
System.out.println(book1.price);
Book book2 = new Book("銀河鉄道の夜","宮沢賢治",500);
System.out.println(book2.title);
System.out.println(book2.author);
System.out.println(book2.price);
}
}

View File

@@ -1,23 +1,17 @@
public class BasicCheck2 {
public static void main(String[] args) {
Student student1 = new Student(1, "鈴木一郎");
Student student2 = new Student(2, "田中花子");
Student student3 = new Student(3, "佐藤次郎");
// TODO 自動生成されたメソッド・スタブ
Student student1 = new Student(1,"鈴木一郎");
Student student2 = new Student(2,"田中花子");
Student student3 = new Student(3,"佐藤次郎");
student1.printProfile();
student2.printProfile();
student3.printProfile();
Student.getStudentCount();
System.out.println("現在の生徒数:" + Student.getStudentCount() + "人");
int total=Student.getStudentCount();
System.out.println("現在の生徒数" + total + "人");
}
}

View File

@@ -1,31 +1,28 @@
public class BasicCheck3 {
public static void main(String[] args) {
// 配列
Item[] items = new Item[3];
items[0] = new Item();
items[1] = new Item();
items[2] = new Item();
//items[0]代入
items[0].setName("ノート");
items[1].setName("消しゴム");
items[2].setName("鉛筆");
items[0].setPrice(120);
items[0].setStock (50);
//items[1]代入
items[1].setName("消しゴム");
items[1].setPrice(80);
items[2].setPrice(60);
items[0].setStock(50);
items[1].setStock(30);
//items[2]代入
items[2].setName("鉛筆");
items[2].setPrice(60);
items[2].setStock(100);
for (int i = 0; i < items.length; i++) {
for (int i=0; i<=2; i++) {
items[i].sell(5);
System.out.println(items[i].getName() + " " + items[i].getPrice() + "円 (残り" + items[i].getStock() + "個) ");
// System.out.println("合計金額 " + items[i].totalPrice() + "円");
// System.out.println();
System.out.println(items[i]);
}
}
}

View File

@@ -1,22 +1,18 @@
public class Book {
String title;
String author;
int price;
public Book() {
this.title = "タイトル未設定";
this.author = "著者未設定";
this.price = 0;
public Book () {
title = "タイトル未設定";
author = "著者未設定";
price = 0;
}
public Book(String title, String author, int price) {
public Book(String title,String author,int price) {
this.title = title;
this.author = author;
this.price = price;
}
}

View File

@@ -6,15 +6,15 @@ public class Circle extends Shape {
super("円");
this.radius = radius;
}
@Override
public double area() {
return Math.PI * radius * radius;
double num;
num = Math.PI * radius * radius;
return num;
}
@Override
public void showInfo() {
super.showInfo();
System.out.println("(半径:" + this.radius + ")");
System.out.println("(半径:" + this.radius + ")");
}
}

View File

@@ -1,8 +1,13 @@
public class Day3Check1 {
public static void main(String[] args) {
Circle radius = new Circle(2);
radius.showInfo();
}
public static void main(String[] args) {
Circle circle = new Circle(2);
circle.showInfo();
Rectangle rectangle = new Rectangle(3,4);
rectangle.showInfo();
Greeting greeting = new JapaneseGreeting();
System.out.println(greeting.hello());
}
}

View File

@@ -1,11 +0,0 @@
public class Day3Check2 {
public static void main(String[] args) {
Rectangle rect = new Rectangle(3, 4);
rect.showInfo();
Greeting greeting = new JapaneseGreeting();
System.out.println(greeting.hello());
}
}

View File

@@ -1,9 +1,9 @@
public class Day3Check3 {
public static void main(String[] args) {
Shape shape1 = new Circle(2);
shape1.showInfo();
Shape shape2 = new Rectangle(3, 4);
shape2.showInfo();
}

View File

@@ -1,12 +1,7 @@
public class DepartmentData extends BaseData {
private String idDepartment, nmDepartment;
public DepartmentData(String idDepartment,String nmDepartment) {
this.setIdDepartment(idDepartment);
this.setNmDepartment(nmDepartment);
return;
}
public class DepartmentDate extends BaseDate {
private String idDepartment;
private String nmDepartment;
public String getIdDepartment() {
@@ -27,13 +22,20 @@ public class DepartmentData extends BaseData {
@Override
public String toString() {
return getIdDepartment() + "\t" + getNmDepartment();
String str1 = (getIdDepartment() + "\t" + getNmDepartment());
return str1;
}
@Override
public String toCSV() {
return getIdDepartment() + "," + getNmDepartment();
String str2 = (getIdDepartment() + "," + getNmDepartment());
return str2;
}
@Override
public String getPrimaryKeyValue() {
return getIdDepartment();
String str3 = (getIdDepartment());
return str3;
}
}

View File

@@ -1,5 +1,5 @@
public class EmployeeData extends BaseData {
public class EmployeeData extends BaseDate {
private String idEmployee;
private String nmEmployee;
private String knEmployee;
@@ -7,44 +7,12 @@ public class EmployeeData extends BaseData {
private String password;
private String idDepartment;
private static int empCount = 0;
static int getempCount() {
return empCount;
}
public EmployeeData() {
empCount++;
}
static int getEmpCount() {
return empCount;
}
public EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password,
String idDepartment) {
this.setIdEmployee(idEmployee);
this.setNmEmployee(nmEmployee);
this.setKnEmployee(knEmployee);
this.setMailAddress(mailAddress);
this.setPassword(password);
this.setIdDepartment(idDepartment);
empCount++;
}
public String getIdEmployee() {
return idEmployee;
}
public void setIdEmployee(String idEmployee) {
this.idEmployee = idEmployee;
if (idEmployee == null || idEmployee.strip().isEmpty()) {
System.out.println("社員IDが空のため設定できませんでした");
return;
}
}
public String getNmEmployee() {
@@ -53,12 +21,7 @@ public class EmployeeData extends BaseData {
public void setNmEmployee(String nmEmployee) {
this.nmEmployee = nmEmployee;
if (nmEmployee == null || nmEmployee.strip().isEmpty()) {
System.out.println("社員名が空のため設定できませんでした");
return;
}
}
public String getKnEmployee() {
return knEmployee;
@@ -94,28 +57,62 @@ public class EmployeeData extends BaseData {
@Override
public String toString() {
String str;
str = (getIdEmployee() + "\t" + getNmEmployee() + "\t" + getKnEmployee() + "\t" + getMailAddress()
+ "\t" + getPassword() + "\t" + getIdDepartment());
return str;
}
return (this.getIdEmployee() + "\t" + this.getNmEmployee() + "\t" + this.getKnEmployee() + "\t"
+ this.getMailAddress() + "\t" + this.getPassword() + "\t" + this.getIdDepartment());
private static int empCount = 0;
public EmployeeData() {
empCount++;
}
//
public EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password,
String idDepartment) {
idEmployee = idEmployee.trim();
int in =idEmployee.length();
if (in==0) {
nmEmployee ="社員IDが空のため設定できませんでした";
}
this.setIdEmployee(idEmployee);
nmEmployee = nmEmployee.trim();
int i =nmEmployee.length();
if (i==0) {
nmEmployee ="社員名がからのため設定できませんでした";
}
this.setNmEmployee(nmEmployee);
this.setKnEmployee(knEmployee);
this.setMailAddress(mailAddress);
this.setPassword(password);
this.setIdDepartment(idDepartment);
empCount++;
}
static int getEmpCount() {
int result = empCount;
return result;
}
@Override
public String toCSV() {
return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress() + ","
+ getPassword() + "," + getIdDepartment();
String str;
str = (getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress()
+ "," + getPassword() + "," + getIdDepartment());
return str;
}
@Override
public String getPrimaryKeyValue() {
return getIdEmployee();
return idEmployee;
}
public boolean isMatchId(String id) {
if (id == null || this.idEmployee == null) {
// System.out.println(id + "を検索します");
if(id.equals(idEmployee)) {
return true;
} else {
return false;
}
return this.idEmployee.equals(id);
}
}

View File

@@ -1,6 +1,4 @@
public interface Greeting {
String hello();
}

View File

@@ -4,20 +4,6 @@ public class Item {
private int price;
private int stock;
public void sell(int amount) {
this.setStock(this.getStock() - amount);
}
public int totalPrice() {
return price * stock;
}
@Override
public String toString() {
return (getName() + " " + getPrice() + "円 (残り" + getStock() + "個");
}
public String getName() {
return name;
}
@@ -42,4 +28,12 @@ public class Item {
this.stock = stock;
}
void sell(int amount) {
this.setStock(this.getStock() - amount);
}
public String toString() {
String str = getName() + " " + getPrice() + "円 (残り" + getStock() + "個)";
return str;
}
}

View File

@@ -2,7 +2,8 @@
public class JapaneseGreeting implements Greeting {
@Override
public String hello() {
return "こんにちは";
String str =("こんにちは");
return str;
}
}

View File

@@ -1,130 +1,184 @@
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<EmployeeData> list = new ArrayList<>();
list.add(new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10"));
list.add(new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "11"));
list.add(new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "12"));
list.add(new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "13"));
list.add(new EmployeeData("10004", "三宅武", "ミヤケタケシ", "miya@hoge.jp", "eee", "14"));
// list.add("10 役員");
// list.add("11 人事・総務部");
// list.add("12 経理部");
// list.add("13 システム開発事業部");
// list.add("14 教育事業部");
// list.add("15 営業企画部");
// while (true) {
// Scanner scanner = new Scanner(System.in);
// System.out.println("検索したい社員IDを入力してください(終了する場合は0)");
// String input = scanner.nextLine();
String str1 = (" ");
while (!str1.equals("0")) {
System.out.println("1:検索 2:登録 3:更新: 4:削除 0:終了");
Scanner sc1 = new Scanner(System.in);
str1 = sc1.nextLine();
System.out.println(str1);
if (str1.equals("1")) {
System.out.println("1:全検索 2:条件検索 それ以外:戻る");
Scanner sc2 = new Scanner(System.in);
String str2 = sc2.nextLine();
System.out.println(str2);
if (str2.equals("1")) {
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}
} else if (str2.equals("2")) {
System.out.println("検索したい社員IDを入力してください");
Scanner sc3 = new Scanner(System.in);
String str3 = sc3.nextLine();
for (int j = 0; j < list.size(); j++) {
if (list.get(j).getIdEmployee().equals(str3)) {
System.out.println(list.get(j));
break;
} else if (!list.get(j).getIdEmployee().equals(str3) && j == list.size()) {
System.out.println("入力された値で情報が見つかりませんでした");
}
}
}
} else if (str1.equals("2")) {
System.out.println("社員IDを入力してください");
Scanner sc4 = new Scanner(System.in);
String str4 = sc4.nextLine();
System.out.println(str4);
System.out.println("社員名を入力してください");
Scanner sc5 = new Scanner(System.in);
String str5 = sc5.nextLine();
System.out.println(str5);
System.out.println("フリガナを入力してください");
Scanner sc6 = new Scanner(System.in);
String str6 = sc6.nextLine();
System.out.println(str6);
System.out.println("メールアドレスを入力してください");
Scanner sc7 = new Scanner(System.in);
String str7 = sc7.nextLine();
System.out.println(str7);
System.out.println("パスワードを入力してください");
Scanner sc8 = new Scanner(System.in);
String str8 = sc8.nextLine();
System.out.println(str8);
System.out.println("部署IDを入力してください");
Scanner sc9 = new Scanner(System.in);
String str9 = sc9.nextLine();
System.out.println(str9);
System.out.println("登録が完了しました");
list.add(new EmployeeData(str4, str5, str6, str7, str8, str9));
BaseData[] employees = new BaseData[5];
// BaseData employee = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
BaseData[] allData = new BaseData[11];
//
allData[0] = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
allData[1] = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10");
allData[2] = new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "11");
allData[3] = new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "12");
allData[4] = new EmployeeData("10004", "三宅武", "ミタケタケシ", "miya@hoge.jp", "eee", "13");
allData[5] = new DepartmentData("10", "役員");
allData[6] = new DepartmentData("11", "人事・総務部");
allData[7] = new DepartmentData("12", "経理");
allData[8] = new DepartmentData("13", "システム開発事業部");
allData[9] = new DepartmentData("14", "教育事業部");
allData[10] = new DepartmentData("15", "営業企画部");
// String targetDeptId = "";
//
// for (int i = 0; i < allData.length; i++) {
//
// if (allData[i] instanceof DepartmentData) {
// DepartmentData dept = (DepartmentData) allData[i];
//
// if (dept.getNmDepartment().equals("システム開発事業部")) {
// targetDeptId = dept.getIdDepartment();
// break;
// }
// }
// }
//
// for (int i = 0; i < allData.length; i++) {
// if (allData[i] instanceof EmployeeData) {
// EmployeeData emp = (EmployeeData) allData[i];
// if (emp.getIdDepartment().equals(targetDeptId)) {
// System.out.println(emp.getNmEmployee() + "\t" + emp.getMailAddress());
// }
// }
// }
// int count = 0;
// int countt = 0;
// for (int i = 0; i < allData.length; i++) {
// if (allData[i] instanceof EmployeeData) {
// // count++;
// EmployeeData emp = (EmployeeData) allData[i];
//
} else if (str1.equals("3")) {
System.out.println("社員IDを入力してください");
Scanner sc4 = new Scanner(System.in);
String str4 = sc4.nextLine();
for (int k = 0; k < list.size(); k++) {
if (list.get(k).getIdEmployee().equals(str4)) {
System.out.println(str4);
System.out.println("社員名を入力してください");
Scanner sc5 = new Scanner(System.in);
String str5 = sc5.nextLine();
System.out.println(str5);
System.out.println("フリガナを入力してください");
Scanner sc6 = new Scanner(System.in);
String str6 = sc6.nextLine();
System.out.println(str6);
System.out.println("メールアドレスを入力してください");
Scanner sc7 = new Scanner(System.in);
String str7 = sc7.nextLine();
System.out.println(str7);
System.out.println("パスワードを入力してください");
Scanner sc8 = new Scanner(System.in);
String str8 = sc8.nextLine();
System.out.println(str8);
System.out.println("部署IDを入力してください");
Scanner sc9 = new Scanner(System.in);
String str9 = sc9.nextLine();
System.out.println(str9);
System.out.println("更新が完了しました");
list.set(k, new EmployeeData(str4, str5, str6, str7, str8, str9));
break;
} else if (!list.get(k).getIdEmployee().equals(str4) && k == list.size()) {
System.out.println("入力された値で情報が見つかりませんでした");
}
}
} else if (str1.equals("4")) {
System.out.println("削除するIDを入力してください");
Scanner sc4 = new Scanner(System.in);
String str4 = sc4.nextLine();
for (int l = 0; l < list.size(); l++) {
if (list.get(l).getIdEmployee().equals(str4)) {
System.out.println("指定されたIDの情報を削除します? y/Y");
System.out.println("y/Y以外の入力であればキャンセル");
Scanner sc5 = new Scanner(System.in);
String str5 = sc5.nextLine();
System.out.println(str5);
if (str5.equals("y") || str5.equals("Y")) {
list.remove(l);
System.out.println("削除されました");
break;
} else {
System.out.println("入力された値で情報が見つかりませんでした");
}
}
}
}
}
System.out.println("システムを終了します");
// num1 = 0;
// int num2 = 0;
// for (int i = 0; i <= 10; i++) {
// if (alldate[i] instanceof EmployeeData) {
// num1++;
// EmployeeData emp = (EmployeeData) alldate[i];
// System.out.println(emp.getMailAddress());
// else if (allData[i] instanceof DepartmentData) {
// countt++;
// }
// System.out.println("社員のデータ:" + count + "件");
// System.out.println("部署のデータ:" + countt + "件");
// System.out.println(allData[i]);
// employees[0] = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
// employees[1] = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10");
// employees[2] = new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "11");
// employees[3] = new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "12");
// employees[4] = new EmployeeData("10004", "三宅武", "ミタケタケシ", "miya@hoge.jp", "eee", "13");
// //
// for (int i = 0; i < employees.length; i++) {
// System.out.println(allData[i]);
// }
// System.out.println("現在の社員データ件数:" + EmployeeData.getEmpCount() + "件");
if (allData[0] instanceof EmployeeData) {
EmployeeData sampleEmp = (EmployeeData) allData[0];
sampleEmp.setNmEmployee("");
}
if (allData[0] instanceof EmployeeData) {
EmployeeData sampleEmp = (EmployeeData) allData[0];
sampleEmp.setIdEmployee("");
}
// String serchId1 = "10002";
// System.out.println(serchId1 + "を検索します");
// boolean bo = false;
// for (int i = 0; i < employees.length; i++) {
// if (((EmployeeData) employees[i]).isMatchId(serchId1)) {
// bo = true;
// break;
// }
//
// }
// System.out.println(bo);
// String serchId2 = "99999";
// System.out.println(serchId2 + "を検索します");
// boolean bl = false;
// for (int i = 0; i < employees.length; i++) {
// if (((EmployeeData) employees[i]).isMatchId(serchId2)) {
// bl = true;
// break;
// } else {
// num2++;
// System.out.println(alldate[i]);
// }
// }
// System.out.println(bl);
// boolean a = false;
// for (int i = 0; i < employees.length; i++) {
// if (((EmployeeData) employees[i]).isMatchId(input)) {
// a = true;
// System.out.println(employees[i]);
// System.out.println("社員データ:" + num1 + "件");
// System.out.println("部署データ" + num2 + "件");
// int j = EmployeeData.getEmpCount();
// System.out.println("現在の社員データ件数;" + j + "件");
// String id = ("");
// for (int k = 0; k <= 10; k++) {
// if (alldate[k] instanceof DepartmentDate) {
// DepartmentDate dep = (DepartmentDate) alldate[k];
// if (dep.getNmDepartment().equals("システム開発事業部")) {
// id = dep.getIdDepartment();
// break;
//
// }
// }
// if (!a) {
// System.out.println("該当する社員が見つかりませんでした");
// }
// for (int l = 0; l < 10; l++) {
// if (alldate[l] instanceof EmployeeData) {
// EmployeeData emp = (EmployeeData) alldate[l];
// if (emp.getIdDepartment().equals(id)) {
// System.out.println(emp.getNmEmployee() + " " + emp.getMailAddress());
// }
// }
// if (input.equals("0")) {
// System.out.println("システムを終了します");
// break;
// }
// System.out.println(employee[0].toCSV());
// System.out.println(employee[0].getPrimaryKeyValue());
// String str = "";
// while (!str.equals("0")) {
// System.out.println("検索したい社員IDを入力してください(終了する場合は0)");
// Scanner sc3 = new Scanner(System.in);
// str = sc.nextLine();
// for (int m = 0; m <= 4; m++) {
// if (employee[m].getPrimaryKeyValue().equals(str)) {
// System.out.println(employee[m]);
// break;
// } else if (!employee[m].getPrimaryKeyValue().equals(str) && m == 4 && !str.equals("0")) {
// System.out.println("該当する社員が見つかりませんでした");
// }
// System.out.println(employee.toCSV());
// System.out.println(employee.getPrimaryKeyValue());
// }
// System.out.println("システムを終了します");
}
}

View File

@@ -1,17 +0,0 @@
public class Rectangle extends Shape{
private double width;
private double height;
public Rectangle(double width, double height) {
super("四角形");
this.width = width;
this.height = height;
}
@Override
public double area() {
return width * height;
}
}

View File

@@ -2,14 +2,13 @@
public abstract class Shape {
private String name;
public Shape(String name) {
public Shape (String name) {
this.name = name;
}
public abstract double area();
public abstract double area() ;
public void showInfo() {
System.out.println(this.name + "の面積は" + this.area() + "です");
System.out.println(this.name + "の面積は" +this.area() + "です");
}
}

View File

@@ -3,22 +3,16 @@ public class Student {
int studentId;
String name;
static int studentCount = 0;
public void printProfile () {
System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
void printProfile() {
System.out.println("学籍番号;"+this.studentId+" 名前;"+this.name);
}
public Student(int studentId, String name) {
this.studentId = studentId;
this.name = name;
studentCount++;
}
static int getStudentCount() {
static int studentCount = 0;
public Student (int studentId,String name){
this.studentId = studentId;
this.name = name;
studentCount++;
}
static int getStudentCount() {
return studentCount;
}
}
}