3 Commits

Author SHA1 Message Date
82628fc7f5 10/15作業分 2026-10-15 16:30:26 +09:00
4b2cb5a18b 修正 2026-10-14 16:46:15 +09:00
2b4e19fae2 10/14 開発課題 2026-10-14 16:37:20 +09:00
16 changed files with 487 additions and 252 deletions

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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
<classpathentry kind="src" path="src/main/java"/>
<classpathentry kind="output" path="build/classes"/>
</classpath>

2
.gitignore vendored
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/bin/
/build/

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<?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>
<buildCommand>
<name>org.eclipse.wst.common.project.facet.core.builder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
</projectDescription>

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eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
org.eclipse.jdt.core.compiler.compliance=21
org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
org.eclipse.jdt.core.compiler.release=enabled
org.eclipse.jdt.core.compiler.source=21

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<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
<installed facet="java" version="21"/>
</faceted-project>

27
BasicCheck1.java Normal file
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package misson1014;
public class BasicCheck1 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
//コンストラクタ
Book book1 = new Book();
//book1
System.out.println(book1.title);
System.out.println(book1.author);
System.out.println(book1.price);
//コンストラクタ
Book book2 = new Book(
"銀河鉄道の夜",
"宮沢賢治",
500);
//book2
System.out.println(book2.title);
System.out.println(book2.author);
System.out.println(book2.price);
}
}

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BasicCheck2.java Normal file
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package misson1014;
public class BasicCheck2 {
public static void main(String[] args) {
// 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");
// 学生情報表示
student1.printProfile();
student2.printProfile();
student3.printProfile();
// 現在の学生数表示
System.out.println(
"現在の生徒数:"
+ Student.getStudentCount()
+ "人");
}
}

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BasicCheck3.java Normal file
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package misson1014;
public class BasicCheck3 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
// Item型の配列を作成
Item[] items = new Item[3];
//インスタンス生成
items[0] = new Item();
items[1] = new Item();
items[2] = new Item();
items[0].setName("ノート");
items[0].setPrice(120);
items[0].setStock(50);
items[1].setName("消しゴム");
items[1].setPrice(80);
items[1].setStock(30);
items[2].setName("鉛筆");
items[2].setPrice(60);
items[2].setStock(100);
//販売
for (int i = 0; i < items.length; i++) {
items[i].sell(5);
}
//商品情報表示
for (int i = 0; i < items.length; i++) {
System.out.println(items[i]);
}
}
}

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Book.java Normal file
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package misson1014;
public class Book {
// タイトル
String title;
// 著者
String author;
// 価格
int price;
//コンストラクタ
public Book() {
this.title = "タイトル未設定";
this.author = "著者未設定";
this.price = 0;
}
//コンストラクタ
public Book(String title, String author, int price) {
//フィールド代入
this.title = title;
this.author = author;
this.price = price;
}
}

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EmployeeData.java Normal file
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package misson1014;
public class EmployeeData {
//社員ID
private String idEmployee;
//社員名
private String nmEmployee;
//社員名カナ
private String knEmployee;
//メールアドレス
private String mailAddress;
//パスワード
private String password;
//部署ID
private String idDepartment;
//社員データ件数
private static int empCount = 0;
//コンストラクタ
public EmployeeData() {
empCount++;
}
//コンストラクタ
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++;
}
//ゲッター
public String getIdEmployee() {
return idEmployee;
}
public String getNmEmployee() {
return nmEmployee;
}
public String getKnEmployee() {
return knEmployee;
}
public String getMailAddress() {
return mailAddress;
}
public String getPassword() {
return password;
}
public String getIdDepartment() {
return idDepartment;
}
//セッター
public void setIdEmployee(String idEmployee) {
//nullチェック
if (idEmployee == null) {
System.out.println("社員IDが空のため設定できませんでした");
return;
}
//空文字チェック
if (idEmployee.trim().isEmpty()) {
System.out.println( "社員IDが空のため設定できませんでした");
return;
}
this.idEmployee = idEmployee;
}
public void setNmEmployee(String nmEmployee) {
//nullチェック
if (nmEmployee == null) {
System.out.println("社員名が空のため設定できませんでした");
return;
}
//空文字チェック
if (nmEmployee.trim().isEmpty()) {
System.out.println("社員名が空のため設定できませんでした");
return;
}
this.nmEmployee = nmEmployee;
}
public void setKnEmployee(String knEmployee) {
this.knEmployee = knEmployee;
}
public void setMailAddress(String mailAddress) {
this.mailAddress = mailAddress;
}
public void setPassword(String password) {
this.password = password;
}
public void setIdDepartment(String idDepartment) {
this.idDepartment = idDepartment;
}
//toString
@Override
public String toString() {
return getIdEmployee() + "\t"
+ getNmEmployee() + "\t"
+ getKnEmployee() + "\t"
+ getMailAddress() + "\t"
+ getPassword() + "\t"
+ getIdDepartment();
}
//ID一致判定
public boolean isMatchId(String id) {
return getIdEmployee().equals(id);
}
//件数取得
public static int getEmpCount() {
return empCount;
}
}

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Item.java Normal file
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package misson1014;
public class Item {
private String name;
private int price;
private int stock;
//商品
public void sell(int amount) {
//在庫減らし
this.setStock(this.getStock() - amount);
}
//商品名ゲッター
public String getName() {
return name;
}
//商品名セッター
public void setName(String name) {
this.name = name;
}
//価格ゲッター
public int getPrice() {
return price;
}
//価格セッター
public void setPrice(int price) {
this.price = price;
}
//在庫数ゲッター
public int getStock() {
return stock;
}
//在庫数セッター
public void setStock(int stock) {
this.stock = stock;
}
@Override
public String toString() {
return getName()
+ " "
+ getPrice()
+ "円 (残り"
+ getStock()
+ "個)";
}
}

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Main.java Normal file
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package misson1014;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
//配列を作成
EmployeeData[] employees = new EmployeeData[5];
//インスタンス生成
employees[0] = new EmployeeData();
employees[1] = new EmployeeData();
employees[2] = new EmployeeData();
employees[3] = new EmployeeData();
employees[4] = new EmployeeData();
employees[0].setIdEmployee("10000");
employees[0].setNmEmployee("山田龍也");
employees[0].setKnEmployee("ヤマダタツヤ");
employees[0].setMailAddress("yamada@hoge.jp");
employees[0].setPassword("aaa");
employees[0].setIdDepartment("10");
employees[1].setIdEmployee("10001");
employees[1].setNmEmployee("高橋準");
employees[1].setKnEmployee("タカハシジュン");
employees[1].setMailAddress("jtaka@hoge.jp");
employees[1].setPassword("bbb");
employees[1].setIdDepartment("10");
employees[2].setIdEmployee("10002");
employees[2].setNmEmployee("麻枝史明");
employees[2].setKnEmployee("マエダフミアキ");
employees[2].setMailAddress("fmak@hoge.jp");
employees[2].setPassword("ccc");
employees[2].setIdDepartment("11");
employees[3].setIdEmployee("10003");
employees[3].setNmEmployee("丸戸章介");
employees[3].setKnEmployee("マルトショウスケ");
employees[3].setMailAddress("marusyo@hoge.jp");
employees[3].setPassword("ddd");
employees[3].setIdDepartment("12");
employees[4].setIdEmployee("10004");
employees[4].setNmEmployee("三宅武");
employees[4].setKnEmployee("ミヤケタケシ");
employees[4].setMailAddress("miya@hoge.jp");
employees[4].setPassword("eee");
employees[4].setIdDepartment("13");
Scanner scanner = new Scanner(System.in);
//0が入力されるまでループ
while (true) {
//ID入力
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 search = scanner.nextLine();
if (search.equals("0")) { System.out.println("システムを終了します");
break;
}
//見つかったかどうか
boolean found = false;
//検索処理
for (int i = 0; i < employees.length; i++) {
if (employees[i].isMatchId(search)) {
System.out.println(employees[i]);
found = true;
break;
}
}
// 見つからなかった場合
if (!found) {System.out.println("該当する社員が見つかりませんでした");
}
}
scanner.close();
}
}

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Main1.java Normal file
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package misson1014;
public class Main1 {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
//8段階目まで
/*
EmployeeData[] employees = new EmployeeData[5];
employees[0] = new EmployeeData();
employees[1] = new EmployeeData();
employees[2] = new EmployeeData();
employees[3] = new EmployeeData();
employees[4] = new EmployeeData();
employees[0].setIdEmployee("10000");
8段階用
employees[0].setNmEmployee("");
employees[0].setKnEmployee("ヤマダタツヤ");
employees[0].setMailAddress("yamada@hoge.jp");
employees[0].setPassword("aaa");
employees[0].setIdDepartment("10");
employees[1].setIdEmployee("10001");
employees[1].setNmEmployee("高橋準");
employees[1].setKnEmployee("タカハシジュン");
employees[1].setMailAddress("jtaka@hoge.jp");
employees[1].setPassword("bbb");
employees[1].setIdDepartment("10");
employees[2].setIdEmployee("10002");
employees[2].setNmEmployee("麻枝史明");
employees[2].setKnEmployee("マエダフミアキ");
employees[2].setMailAddress("fmak@hoge.jp");
employees[2].setPassword("ccc");
employees[2].setIdDepartment("11");
employees[3].setIdEmployee("10003");
employees[3].setNmEmployee("丸戸章介");
employees[3].setKnEmployee("マルトショウスケ");
employees[3].setMailAddress("marusyo@hoge.jp");
employees[3].setPassword("ddd");
employees[3].setIdDepartment("12");
employees[4].setIdEmployee("10004");
employees[4].setNmEmployee("三宅武");
employees[4].setKnEmployee("ミヤケタケシ");
employees[4].setMailAddress("miya@hoge.jp");
employees[4].setPassword("eee");
employees[4].setIdDepartment("13");
for (int i = 0; i < employees.length; i++) {
System.out.println(employees[i]);
}
System.out.println(
"現在の社員データ件数:"
+ EmployeeData.getEmpCount()
+ "件");
*/
//ここから9段階↓
EmployeeData employee1 =
new EmployeeData(
"10000",
"",
"ヤマダタツヤ",
"yamada@hoge.jp",
"aaa",
"10"
);
EmployeeData employee2 =
new EmployeeData(
"",
"山田龍也",
"ヤマダタツヤ",
"yamada@hoge.jp",
"aaa",
"10"
);
}
}

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Student.java Normal file
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package misson1014;
public class Student {
int studentId;
String name;
//staticフィールド
static int studentCount = 0;
//コンストラクタ
public Student(int studentId, String name) {
//フィールド代入
this.studentId = studentId;
this.name = name;
studentCount++;
}
//学生情報
void printProfile() {
System.out.println(
"学籍番号:" + this.studentId
+ " 名前:" + this.name);
}
//現在の学生数用staticメソッド
public static int getStudentCount() {
return studentCount;
}
}

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public class EmployeeData {
static final String COMPANY_NAME = "Rhizome";
private static int empCount = 0;
private String idEmployee;
private String nmEmployee;
private String knEmployee;
private String mailAddress;
private String password;
private String idDepartment;
public EmployeeData() {
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) {
if (idEmployee.strip().length()==0) {
System.out.println("社員IDが空のため設定できませんでした");
System.exit(0);
} else {
this.idEmployee = idEmployee;
}
}
public String getNmEmployee() {
return nmEmployee;
}
public void setNmEmployee(String nmEmployee) {
if (nmEmployee.strip().length()==0) {
System.out.println("社員名が空のため設定できませんでした");
System.exit(0);
} else {
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;
}
public static int getEmpCount() {
return empCount;
}
@Override
public String toString() {
return this.getIdEmployee()+"\t"
+this.getNmEmployee()+"\t"
+this.getKnEmployee()+"\t"
+this.getMailAddress()+"\t"
+this.getPassword()+"\t"
+this.getIdDepartment();
}
public boolean isMatchId(String id) {
return id.equals(this.getIdEmployee()) ;
}
}

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import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
//====================設定====================
EmployeeData[] employees = new EmployeeData[5];
// EmployeeData employee0 = new EmployeeData();
// employee0.setIdEmployee(""); // 社員IDが空文字のとき
// employee0.setNmEmployee(""); // 社員名が空文字のとき
EmployeeData employee1 = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
// EmployeeData employee1 = new EmployeeData();
// employee1.setIdEmployee("10000");
// employee1.setNmEmployee("山田龍也");
// employee1.setKnEmployee("ヤマダタツヤ");
// employee1.setMailAddress("yamada@hoge.jp");
// employee1.setPassword("aaa");
// employee1.setIdDepartment("10");
employees[1-1] = employee1;
EmployeeData employee2 = new EmployeeData();
employee2.setIdEmployee("10001");
employee2.setNmEmployee("高橋準");
employee2.setKnEmployee("タカハシジュン");
employee2.setMailAddress("jtaka@hoge.jp");
employee2.setPassword("bbb");
employee2.setIdDepartment("10");
employees[2-1] = employee2;
EmployeeData employee3 = new EmployeeData();
employee3.setIdEmployee("10002");
employee3.setNmEmployee("麻枝史明");
employee3.setKnEmployee("マエダフミアキ");
employee3.setMailAddress("fmak@hoge.jp");
employee3.setPassword("ccc");
employee3.setIdDepartment("11");
employees[3-1] = employee3;
EmployeeData employee4 = new EmployeeData();
employee4.setIdEmployee("10003");
employee4.setNmEmployee("丸戸章介");
employee4.setKnEmployee("マルトショウスケ");
employee4.setMailAddress("marusyo@hoge.jp");
employee4.setPassword("ddd");
employee4.setIdDepartment("12");
employees[4-1] = employee4;
EmployeeData employee5 = new EmployeeData();
employee5.setIdEmployee("10004");
employee5.setNmEmployee("三宅武");
employee5.setKnEmployee("ミヤケタケシ");
employee5.setMailAddress("miya@hoge.jp");
employee5.setPassword("eee");
employee5.setIdDepartment("13");
employees[5-1] = employee5;
//====================表示====================
System.out.println(EmployeeData.COMPANY_NAME);
for ( EmployeeData employee : employees ) {
System.out.println(employee);
}
System.out.println("現在の社員データ件数:"+EmployeeData.getEmpCount()+"件");
//====================検索====================
while (true) {
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 sc = new Scanner(System.in);
String id = sc.nextLine();
if ( id.equals("0") ) {
System.out.println("システムを終了します");
break;
}
boolean matchId = false;
for ( EmployeeData employee : employees ) {
if ( employee.isMatchId(id) ) {
matchId = true;
System.out.println(employee);;
}
}
if ( matchId==false ) {
System.out.println("該当する社員が見つかりませんでした");
}
}
}
}