6 Commits
main ... kawara

Author SHA1 Message Date
04ef2b8b1f Basedata 2026-10-21 12:59:39 +09:00
b17babd071 最終日 2026-10-20 16:43:29 +09:00
24aa555e45 2日目 2026-10-19 14:15:21 +09:00
d656d3c5a8 1日目 2026-10-14 17:38:57 +09:00
7e61a24d20 1日目 2026-10-14 17:05:56 +09:00
9223c5810c 1日目 2026-10-14 16:57:44 +09:00
14 changed files with 454 additions and 0 deletions

6
.classpath Normal file
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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>

1
.gitignore vendored Normal file
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/build/

23
.project Normal file
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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>

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public abstract class BaseData{
public abstract String toString();
public abstract String toCSV();
public abstract String getPrimaryKeyValue();
}

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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 book = new Book();
Book book1 = new Book();
book.title = "吾輩は猫である";
book.author = "夏目漱石";
book.price = 800;
System.out.println(book1.title);
System.out.println(book1.author);
System.out.println(book1.price);
System.out.println(book.title);
System.out.println(book.author);
System.out.println(book.price);
}
}

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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");
student1.printProfile();
student2.printProfile();
student3.printProfile();
System.out.println("現在の生徒数: " + student1.getStudentCount() + "人");
}
}

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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[] items = new Item[3];
items[0] = new Item();
items[0].setName("ノート");
items[0].setPrice(120);
items[0].setStock(50);
items[1] = new Item();
items[1].setName("消しゴム");
items[1].setPrice(80);
items[1].setStock(30);
items[2] = new Item();
items[2].setName("鉛筆");
items[2].setPrice(60);
items[2].setStock(100);
for (int i = 0; i < items.length; i++) {
items[i].sell(5);
}
for (int i = 0; i < items.length; i++) {
System.out.println(items[i]);
}
}
}

18
src/main/java/Book.java Normal file
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public class Book {
String title;
String author;
int price;
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) {
this.title = title;
this.author = author;
this.price = price;
}
}

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public class EmployeeData extends BaseData {
private String idEmployee;
private String nmEmployee;
private String knEmployee;
private String mailAddress;
private String password;
private String idDepartment;
private static int empCount = 0;
public String getIdEmployee() {
return idEmployee;
}
public void setIdEmployee(String idEmployee) {
if (idEmployee == null || idEmployee == " " ||idEmployee == " " || idEmployee.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 String getNmEmployee() {
return nmEmployee;
}
public void setNmEmployee(String nmEmployee) {
if (nmEmployee == null || nmEmployee == " " || nmEmployee == " " || nmEmployee.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 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 boolean isMatchId(String id) {
if (this.idEmployee != null && this.idEmployee.equals(id)) {
return true;
} else {
return false;
}
}
public void showInfo() {
System.out.println(this.toString());
}
@Override
public String toString(){
return(getIdEmployee() + "\t" + getNmEmployee() + "\t" + getKnEmployee() + "\t" + getMailAddress() + "\t" +getPassword() + "\t" +getIdDepartment()
);
}
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++;
}
static int getEmpCount() {
return empCount;
}
@Override
public String toCSV() {
return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress() + "," + getPassword() + "," + getIdDepartment();
}
@Override
public String getPrimaryKeyValue(){
return this.idEmployee;
}
}

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src/main/java/Item.java Normal file
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class Item {
private String name;
private int price;
private int stock;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public int getStock() {
return stock;
}
public void setStock(int stock) {
this.stock = stock;
}
public void sell(int amount) {
this.setStock(this.getStock() - amount);
}
@Override
public String toString() {
return getName() + " " + getPrice() + "円 (残り" + getStock() + "個)";
}
}

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src/main/java/Main.java Normal file
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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
BaseData[] employees = new BaseData[5];
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", "ミヤケタケシ", "miya@hoge.jp", "eee", "13");
for (int i = 0; i < employees.length; i++) {
//System.out.println(employees[i]);
}
System.out.println("現在のデータ件数:"+EmployeeData.getEmpCount()+"件");
while (true) {
//Scannerを使って、
Scanner scanner = new Scanner(System.in);
//「検索したい社員IDを入力してください」と表示し
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)");
//キーボード入力を受け取る
String idEmployee = scanner.next();
if ("0".equals(idEmployee)) {
System.out.println("システムを終了します");
break;
}
//employees配列をfor文で1件ずつ確認し
for(int i = 0; i < employees.length; i++) {
if (((EmployeeData) employees[i]).isMatchId(idEmployee)) {
//一致する社員が見つかったら、その社員のshowInfoメソッドを呼び出す
((EmployeeData) employees[i]).showInfo();
}
else {
//
System.out.println("検索したいIDが見つかりませんでした");
break;
}
}
}
//System.out.println(employees[0].toCSV());
//System.out.println(employees[0].getPrimaryKeyValue());
}
}

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public class Student {
int studentId;
String name;
public 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++;
}
public int getStudentCount() {
return studentCount;
}
static int studentCount = 0;
}