8 Commits

Author SHA1 Message Date
m-shimizu
2ed5d89eca 2段階目 2026-09-16 13:12:13 +09:00
m-shimizu
5eebc7c766 1段階目 2026-09-15 16:25:25 +09:00
m-shimizu
ac9efcc611 6段階目 2026-09-15 15:54:40 +09:00
m-shimizu
2065f850b4 段階4 2026-09-15 14:54:00 +09:00
m-shimizu
389c1a0a48 段階3 2026-09-15 14:26:28 +09:00
m-shimizu
357ad900a1 段階2 2026-09-15 13:51:34 +09:00
7559a7dfa7 段階2完了いたしました。 2026-09-14 16:36:18 +09:00
43567c0e0c 1段階目完了 2026-09-14 15:14:17 +09:00
21 changed files with 148 additions and 384 deletions

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

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@@ -1,6 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="src" path="src"/>
<classpathentry kind="output" path="bin"/>
</classpath>

2
em-oop/.gitignore vendored
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@@ -1,2 +0,0 @@
/bin/
/.metadata/

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@@ -1,17 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>em-oop</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
</projectDescription>

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@@ -1,9 +0,0 @@
public abstract class BaseData {
//抽象メソッドを宣言
public abstract String toString();
public abstract String toCSV();
public abstract String getPrimaryKeyValue();
}

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@@ -2,21 +2,25 @@
public class BasicCheck1 { public class BasicCheck1 {
public static void main(String[] args) { public static void main(String[] args) {
//Book book = new Book(); // TODO 自動生成されたメソッド・スタブ
//book.title = "吾輩は猫である";
//book.author = "夏目漱石";
//book.price = 800;
//System.out.println(book.title);
//System.out.println(book.author);
//System.out.println(book.price);
//引数なし
Book book1 = new Book(); Book book1 = new Book();
book1.title = "タイトル未設定";
book1.author ="著者未設定";
book1.price = 0;
System.out.println(book1.title);
System.out.println(book1.author);
System.out.println(book1.price);
Book book2 = new Book();
book2.title = "銀河鉄道の夜";
book2.author ="宮沢賢治";
book2.price = 500;
System.out.println(book2.title);
System.out.println(book2.author);
System.out.println(book2.price);
//引数あり
Book book2 = new Book("銀河鉄道の夜", "宮沢賢治", 500);
} }

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@@ -1,21 +1,15 @@
public class BasicCheck2 { public class BasicCheck2 {
public static void main(String[] args) { public static void main(String[] args) {
//変数宣言 Student student = new Student(1,"鈴木一郎");
Student students = new Student();
//代入
//student.studentId = 1;
//student.name = "鈴木一郎";
//student.printProfile();
Student students1 = new Student(1, "鈴木一郎"); student.studentId = 1;
Student students2 = new Student(2, "田中花子"); student.name = "鈴木一郎";
Student students3 = new Student(3, "佐藤次郎");
students1.printProfile(); // System.out.print("学籍番号"+student.studentId);
students2.printProfile(); // System.out.print("名前:" + student.name);
students3.printProfile(); student.printProfile();
System.out.println("現在の生徒数:" + Student.getstudentCount() + "人");
} }
} }

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@@ -2,35 +2,34 @@
public class BasicCheck3 { public class BasicCheck3 {
public static void main(String[] args) { public static void main(String[] args) {
//配列3件分 // TODO 自動生成されたメソッド・スタブ
Item[] items = new Item[3]; Item[] items = new Item[3];
//newインスタンス代入
items[0] = new Item(); items[0] = new Item();
items[1] = new Item();
items[2] = new Item();
items[0].setName("ノート"); items[0].setName("ノート");
items[0].setPrice(120); items[0].setPrice(120);
items[0].setStock(50); items[0].setStock(50);
items[1] = new Item();
items[1].setName("消しゴム"); items[1].setName("消しゴム");
items[1].setPrice(80); items[1].setPrice(80);
items[1].setStock (30); items[1].setStock(30);
items[2] = new Item();
items[2].setName("鉛筆"); items[2].setName("鉛筆");
items[2].setPrice(60); items[2].setPrice(60);
items[2].setStock(100); items[2].setStock(100);
//for文残り数の引き算 for (int i = 0; i < items.length; i++) {
for (int i = 0; i <= 2 ; i++) {
items[i].sell(5); items[i].sell(5);
} }
//3件出力
for (int i = 0; i <= 2 ; i++) { for (int i = 0; i < items.length; i++) {
System.out.println(items[i]); System.out.println(items[i]);
}
} }
}
} }

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@@ -4,18 +4,17 @@ public class Book {
String author; String author;
int price; int price;
//コンストラクタ生成
public Book() { public Book() {
System.out.println( "タイトル未設定"); title = "タイトル未設定";
System.out.println( "著者未設定"); author = "著者未設定";
System.out.println( "0"); price = 0;
}
//3つの引数を持つコンストラクタ生成
public Book(String title, String author, int price) {
System.out.println(this.title = title);
System.out.println(this.author = author);
System.out.println(this.price = price);
} }
public Book(String title,String author,int price){
this.title = title;
this.author = author;
this.price = price;
}
} }

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@@ -1,21 +0,0 @@
public class Circle extends Shape {
//フィールド
private double radius;
//コンストラクタ
public Circle(double radius) {
super("円");
this.radius = radius;
}
//メソッド1
@Override
public double area() {
return Math.PI * radius * radius;
}
//メソッド2
@Override
public void showInfo() {
super.showInfo();
System.out.println("半径:" + this.radius + "");
}
}

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@@ -1,10 +0,0 @@
public class Day3Check1 {
public static void main(String[] args) {
//インスタンス
Circle circle = new Circle(2.0);
circle.showInfo();
}
}

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@@ -1,17 +0,0 @@
public class Day3Check2 {
public static void main(String[] args) {
//インスタンス
Rectangle rect = new Rectangle(3.0,4.0);
//メソッド呼び出し
rect.showInfo();
//戻り値出力
//Greeting greeting = new JapaneseGreeting();
//System.out.println();
//インスタンスを代入
Greeting greeting = new JapaneseGreeting();
System.out.println(greeting.hello());
}
}

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@@ -1,17 +0,0 @@
public class Day3Check3 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
//インスタンスを代入
Shape shape1 = new Circle(2);
//メソッド呼び出し
shape1.showInfo();
//インスタンスを代入
Shape shape2 = new Rectangle(3, 4);
//メソッド呼び出し
shape2.showInfo();
}
}

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@@ -1,113 +1,23 @@
public class EmployeeData extends BaseData {
//フィールド宣言
private String idEmployee;//社員ID
private String nmEmployee;//社員名
private String knEmployee;//社員カナ
private String mailAddress;//メールアドレス
private String password;//パスワード
private String idDepartment;//部署ID
public String getIdEmployee() { public class EmployeeData {
return idEmployee;
}
public void setIdEmployee(String idEmployee) { String idEmployee;
this.idEmployee = idEmployee; String nmEmployee;
} String knEmployee;
String mailAddress;
String password;
String idDepartment;
public String getNmEmployee() {
return nmEmployee;
}
public void setNmEmployee(String nmEmployee) {
this.nmEmployee = nmEmployee;
}
public String getKnEmployee() {
return knEmployee;
}
public void setKnEmployee(String knEmployee) {
this.knEmployee = knEmployee;
}
public String getMailAddress() {
return mailAddress;
}
public void setMailAddress(String mailAddress) {
this.mailAddress = mailAddress;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getIdDepartment() {
return idDepartment;
}
public void setIdDepartment(String idDepartment) {
this.idDepartment = idDepartment;
}
//メソッド追加
void showInfo() { void showInfo() {
System.out.println(getIdEmployee());
System.out.println(getNmEmployee()); System.out.println(
System.out.println(getKnEmployee()); this.idEmployee + "\t"
System.out.println(getMailAddress()); + this.nmEmployee + "\t"
System.out.println(getPassword()); + this.knEmployee + "\t"
System.out.println(getIdDepartment()); + this.mailAddress + "\t"
+ this.password + "\t"
+ this.idDepartment
);
} }
//上記メソッドの書き換え
@Override
public String toString() {
return getIdEmployee() + "\t"+
getNmEmployee() + "\t"+
getKnEmployee() + "\t"+
getMailAddress() + "\t"+
getPassword() + "\t"+
getIdDepartment();
}
//コンストラクタ追加(引数なし)
public EmployeeData() {
}
//6つ引数持ちコンストラクタ追加
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);
}
//メソッド2つ追加
@Override
public String toCSV() {
return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress() + ","
+ getPassword() + "," + getIdDepartment();
}
@Override
public String getPrimaryKeyValue() {
return this.idEmployee;
}
//メソッド追加、7段目
public boolean isMatchID(String id) {
return idEmployee.equals(id);
}
} }

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@@ -1,3 +0,0 @@
public interface Greeting {
String hello();
}

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@@ -1,16 +1,11 @@
public class Item { public class Item {
//フィールド宣言
private String name; private String name;
private int price; private int price;
private int stock; private int stock;
//メソッド宣言
void sell(int amount) {
this.setStock(this.getStock() - amount);
}
//ゲッター、セッター設定
public String getName() { public String getName() {
return name; return name;
@@ -35,8 +30,14 @@ public class Item {
public void setStock(int stock) { public void setStock(int stock) {
this.stock = stock; this.stock = stock;
} }
void sell(int amount) {
this.setStock(this.getStock() - amount);
}
@Override @Override
public String toString() { public String toString() {
return getName() + " " + getPrice() + "円 (残り" + getStock() + "個)"; return getName() + "" + getPrice() + "円(残り" + getStock() + "個)";
} }
} }

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@@ -1,7 +0,0 @@
public class JapaneseGreeting implements Greeting{
@Override
public String hello(){
return "こんにちは";
}
}

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@@ -1,55 +1,64 @@
import java.util.Scanner;
public class Main { public class Main {
public static void main(String[] args) { public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ // TODO 自動生成されたメソッド・スタブ
//インスタンス宣言
BaseData employee = new EmployeeData();
//配列5件分
BaseData[] employees = new BaseData[5];
//5段階目書き換え
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", "麻枝文明", "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", "ミヤケタケシ", "miya@hoge.jp", "eee", "13");
//5段階目記載の処理呼び出し EmployeeData[] Employees = new EmployeeData[5];
//employee.showInfo();
//Day1、8段階目検索 Employees[0] = new EmployeeData();
while (true) { Employees[1] = new EmployeeData();
Scanner sc = new Scanner(System.in);//インスタンス化 Employees[2] = new EmployeeData();
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を入力)"); Employees[3] = new EmployeeData();
String id = sc.next(); Employees[4] = new EmployeeData();
if (id.equals("0")) { Employees[0].idEmployee = "10000";
System.out.println("システムを終了します"); Employees[0].nmEmployee = "山田龍也";
break; Employees[0].knEmployee = "ヤマダタツヤ";
} Employees[0].mailAddress = "yamada@hoge.jp";
//boolean変数作成 Employees[0].password = "aaa";
boolean result = false; Employees[0].idDepartment = "10";
//該当の場合
for (int i = 0; i < employees.length; i++) {
if (employees[i].getPrimaryKeyValue().equals(id)) {
result = true;
System.out.println(employees[i]);
break;
}
}
if (result == false) {
System.out.println("該当する社員が見つかりませんでした(終了する場合は0を入力)");
}
} Employees[1].idEmployee = "10001";
Employees[1].nmEmployee = "高橋準";
Employees[1].knEmployee = "タカハシジュン";
Employees[1].mailAddress = "jtaka@hoge.jp";
Employees[1].password = "bbb";
Employees[1].idDepartment = "10";
Employees[2].idEmployee = "10002";
Employees[2].nmEmployee = "麻枝史明";
Employees[2].knEmployee = "マエダフミアキ";
Employees[2].mailAddress = "fmak@hoge.jp";
Employees[2].password = "ccc";
Employees[2].idDepartment = "11";
Employees[3].idEmployee = "10003";
Employees[3].nmEmployee = "丸戸章介";
Employees[3].knEmployee = "マルトショウスケ";
Employees[3].mailAddress = "marusyo@hoge.jp";
Employees[3].password = "ddd";
Employees[3].idDepartment = "12";
Employees[4].idEmployee = "10004";
Employees[4].nmEmployee = "三宅武";
Employees[4].knEmployee = "ミヤケタケシ";
Employees[4].mailAddress = "miya@hoge.jp";
Employees[4].password = "eee";
Employees[4].idDepartment = "13";
// System.out.println(Employees.idEmployee);
// System.out.println(Employees.nmEmployee);
// System.out.println(Employees.knEmployee);
// System.out.println(Employees.mailAddress);
// System.out.println(Employees.password);
// System.out.println(Employees.idDepartment);
for (int i = 0; i < Employees.length; i++) {
Employees[i].showInfo();
//for文
//for (int i = 0; i < employees.length; i++) {
//System.out.println(employees[i]);
//System.out.println(employees[i].toCSV());
//System.out.println(employees[i].getPrimaryKeyValue());
//employees[i].showInfo();を上記に書き換え
} }
} }
}

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@@ -1,20 +0,0 @@
public class Rectangle extends Shape {
//フィールド
private double width;
private double height;
//コンストラクタ
public Rectangle(double width, double height) {
super("四角形");
this.width = width;
this.height = height;
}
//抽象メソッドのオーバーライド
@Override
public double area() {
return width * height;
}
}

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@@ -1,18 +0,0 @@
public abstract class Shape {
//フィールド宣言
private String name;
//コンストラクタ
public Shape(String name) {
this.name = name;
}
//メソッド1(抽象メソッド)
public abstract double area();
//メソッド2
void showInfo() {
System.out.println(this.name + "の面積は" + this.area() + "です");
}
}

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@@ -1,29 +1,23 @@
public class Student { public class Student {
//フィールド宣言
int studentId; int studentId;
String name; String name;
//フィールド追加
static int studentCount = 0;
//メソッド宣言
void printProfile() {
System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
}
//コントラクタ追加
public Student(int studentId, String name) { public Student(int studentId, String name) {
this.studentId = studentId; this.studentId = studentId;
this.name = name; this.name = name;
}
public Student() {
// TODO 自動生成されたコンストラクター・スタブ
}
//コントラクタ追加
public static int getstudentCount() {
return studentCount;
} }
public void printProfile() {
System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
}
//public static void main(String[] args) {
//Student s = new Student(1,"鈴木一郎");
//s.printProfile();
//}
} }