27 Commits

Author SHA1 Message Date
e1f7fc02f2 2日目の9段階目終了 2026-09-18 10:05:49 +09:00
60da179895 2日目の8段階目終了 2026-09-18 10:00:12 +09:00
5358280624 3日目の9段階目終了 2026-09-17 16:40:22 +09:00
989e8d7248 3日目の8段階目終了 2026-09-17 16:06:40 +09:00
928398cbc6 3日目の7段階目終了 2026-09-17 15:18:21 +09:00
59fd7f7ad3 3日目の6段階目終了 2026-09-17 14:57:00 +09:00
70b3359a0d 1日目段階9終了 2026-09-17 13:40:31 +09:00
e0c820be50 1日目の8段階目終わりました 2026-09-16 16:52:34 +09:00
1b541b05b5 1日目の7段階目終わりました 2026-09-16 16:22:27 +09:00
9abebd30aa 4段階目終わりました 2026-09-16 14:41:32 +09:00
85fc2596e5 3段階目終わりました 2026-09-16 13:53:02 +09:00
fd770903e4 2段階目終わりました 2026-09-16 13:48:36 +09:00
101991f33d 1段階目終わりました 2026-09-16 13:27:39 +09:00
6468a372ce 7段階目終わりました 2026-09-15 16:43:23 +09:00
782d0db2a9 6段階目終わりました 2026-09-15 16:21:10 +09:00
1158708741 5段階目終わりました 2026-09-15 16:10:54 +09:00
a76eb8d4a6 4段階目終わりました 2026-09-15 15:59:58 +09:00
623b7cc16a 3段階目終わりました 2026-09-15 15:46:57 +09:00
12f84a2a83 2段階目終わりました 2026-09-15 14:50:24 +09:00
2cc3a84a2d 1段階目終わりました 2026-09-15 14:30:41 +09:00
29cf120dbf 6段階目終わりました 2026-09-15 13:51:35 +09:00
e56a4c8bf9 5段階目終わりました 2026-09-15 13:07:00 +09:00
f8f6523954 4段階目終わりました 2026-09-14 16:54:20 +09:00
4ef8fca04f 3段階の追加問題終わりました 2026-09-14 16:41:41 +09:00
47cfdcf026 3段階目終わりました 2026-09-14 16:15:23 +09:00
04421c3a90 段階2終わりました 2026-09-14 15:22:18 +09:00
d694f1f22f 1段階目終わりました 2026-09-14 14:52:18 +09:00
20 changed files with 245 additions and 246 deletions

View File

@@ -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="em-oop/src"/>
<classpathentry kind="output" path="bin"/>
</classpath>

View File

@@ -1,17 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>java-cui-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>

View File

@@ -2,7 +2,9 @@
public abstract class BaseData { public abstract class BaseData {
public abstract String toString(); public abstract String toString();
public abstract String toCSV(); public abstract String toCSV();
public abstract String getPrimaryKeyValue(); public abstract String getPrimaryKeyValue();
} }

View File

@@ -6,12 +6,8 @@ public class BasicCheck1 {
Book book1 = new Book(); Book book1 = new Book();
Book book2 = new Book("銀河鉄道の夜", "宮沢賢治", 500); Book book2 = new Book("銀河鉄道の夜", "宮沢賢治", 500);
// book.title = "吾輩は猫である"; System.out.println(book1.title + "\n" + book1.author + "\n" + book1.price);
// book.author = "夏目漱石"; System.out.println(book2.title + "\n" + book2.author + "\n" + book2.price);
// book.price = 800;
System.out.println(book1.title +"\n"+ book1.author +"\n"+ book1.price);
System.out.println(book2.title +"\n"+ book2.author +"\n"+ book2.price);
} }

View File

@@ -1,26 +1,23 @@
public class BasicCheck2 { public class BasicCheck2 {
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
Student student1 = new Student(1, "鈴木一郎"); Student student1 = new Student(1, "鈴木一郎");
Student student2 = new Student(2, "田中花子");
// student1.studentId = 1; Student student3 = new Student(3, "佐藤次郎");
// student1.name = "鈴木一郎";
student1.printProfile(); student1.printProfile();
Student student2 = new Student(2, "田中花子");
student2.printProfile(); student2.printProfile();
Student student3 = new Student(3, "佐藤次郎");
student3.printProfile(); student3.printProfile();
Student.getStudentCount();{
System.out.println("現在の生徒数:" + Student.studentCount + "人"); Student.getStudentCount();
} System.out.println("現在の生徒数:" + Student.getStudentCount() + "人");
} }
}
}

View File

@@ -1,53 +1,31 @@
public class BasicCheck3 { public class BasicCheck3 {
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
Item[] items = new Item[3]; Item[] items = new Item[3];
items[0] = new Item();
items[1] = new Item();
items[2] = new Item();
Item item0 = new Item(); items[0].setName("ノート");
Item item1 = new Item(); items[1].setName("消しゴム");
Item item2 = new Item(); items[2].setName("鉛筆");
items[0] = item0; items[0].setPrice(120);
items[1] = item1; items[1].setPrice(80);
items[2] = item2; items[2].setPrice(60);
item0.setName("ノート"); items[0].setStock(50);
item0.setPrice(120); items[1].setStock(30);
item0.setStock(50); items[2].setStock(100);
item1.setName("消しゴム");
item1.setPrice(80);
item1.setStock(30);
item2.setName("鉛筆");
item2.setPrice(60);
item2.setStock(100);
// item1.setName = "ノート";
// item1.price = 120;
// item1.stock = 50;
//
// Item item2 = new Item();
//
// item2.name = "消しゴム";
// item2.price = 80;
// item2.stock = 30;
//
// Item item3 = new Item();
//
// item3.name = "鉛筆";
// item3.price = 60;
// item3.stock = 100;
for (int i = 0; i < items.length; i++) { for (int i = 0; i < items.length; i++) {
items[i].sell(5); items[i].sell(5);
System.out.println(items[i].getName() + " " + items[i].getPrice() + "円 (残り" + items[i].getStock() + "個) ");
System.out.println(items[i]); // System.out.println("合計金額 " + items[i].totalPrice() + "円");
// System.out.println();
} }
} }
} }

View File

@@ -1,13 +1,14 @@
public class Book { public class Book {
public String title;
public String author; String title;
public int price; String author;
int price;
public Book() { public Book() {
title = "タイトル未設定"; this.title = "タイトル未設定";
author = "著者未設定"; this.author = "著者未設定";
price = 0; this.price = 0;
} }
@@ -17,4 +18,5 @@ public class Book {
this.price = price; this.price = price;
} }
} }

View File

@@ -5,7 +5,6 @@ public class Circle extends Shape {
public Circle(double radius) { public Circle(double radius) {
super("円"); super("円");
this.radius = radius; this.radius = radius;
} }
@Override @Override
@@ -16,7 +15,6 @@ public class Circle extends Shape {
@Override @Override
public void showInfo() { public void showInfo() {
super.showInfo(); super.showInfo();
System.out.println("(半径:" + this.radius + ")"); System.out.println("(半径:" + this.radius + ")");
} }
} }

View File

@@ -1,9 +1,8 @@
public class DayCheck1 { public class Day3Check1 {
public static void main(String[] args) { public static void main(String[] args) {
Circle radius = new Circle(2); Circle radius = new Circle(2);
radius.showInfo(); radius.showInfo();
} }
} }

View File

@@ -1,10 +1,8 @@
public class Day3Check2 { public class Day3Check2 {
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 Rectangle rect = new Rectangle(3, 4);
Rectangle Rectangle = new Rectangle(3, 4); rect.showInfo();
Rectangle.showInfo();
Greeting greeting = new JapaneseGreeting(); Greeting greeting = new JapaneseGreeting();
System.out.println(greeting.hello()); System.out.println(greeting.hello());

View File

@@ -1,14 +1,10 @@
public class Day3Check3 { public class Day3Check3 {
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
Shape shape1 = new Circle(2); Shape shape1 = new Circle(2);
shape1.showInfo(); shape1.showInfo();
Shape shape2 = new Rectangle(3, 4);
Shape shape2 = new Rectangle(3, 4);
shape2.showInfo(); shape2.showInfo();
} }

View File

@@ -1,12 +1,13 @@
public class DepartmentData extends BaseData { public class DepartmentData extends BaseData {
private String idDepartment; private String idDepartment, nmDepartment;
private String nmDepartment;
public DepartmentData(String idDepartment,String nmDepartment) {
this.setIdDepartment(idDepartment);
this.setNmDepartment(nmDepartment);
return;
}
public DepartmentData(String idDepartment, String nmDepartment) {
setIdDepartment(idDepartment);
setNmDepartment(nmDepartment);
}
public String getIdDepartment() { public String getIdDepartment() {
return idDepartment; return idDepartment;
@@ -23,17 +24,16 @@ public class DepartmentData extends BaseData {
public void setNmDepartment(String nmDepartment) { public void setNmDepartment(String nmDepartment) {
this.nmDepartment = nmDepartment; this.nmDepartment = nmDepartment;
} }
@Override @Override
public String toString() { public String toString() {
return getIdDepartment() + "\t" + getNmDepartment(); return getIdDepartment() + "\t" + getNmDepartment();
} }
public String toCSV() { public String toCSV() {
return getIdDepartment() + "," + getNmDepartment(); return getIdDepartment() + "," + getNmDepartment();
} }
public String getPrimaryKeyValue() { public String getPrimaryKeyValue() {
return getIdDepartment(); return getIdDepartment();
} }
} }

View File

@@ -6,21 +6,33 @@ public class EmployeeData extends BaseData {
private String mailAddress; private String mailAddress;
private String password; private String password;
private String idDepartment; private String idDepartment;
private static int empCount = 0; private static int empCount = 0;
EmployeeData() { static int getempCount() {
empCount = empCount + 1; return empCount;
} }
EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password, public EmployeeData() {
empCount++;
}
static int getEmpCount() {
return empCount;
}
public EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password,
String idDepartment) { String idDepartment) {
setIdEmployee(idEmployee); this.setIdEmployee(idEmployee);
setNmEmployee(nmEmployee); this.setNmEmployee(nmEmployee);
setKnEmployee(knEmployee); this.setKnEmployee(knEmployee);
setMailAddress(mailAddress); this.setMailAddress(mailAddress);
setPassword(password); this.setPassword(password);
setIdDepartment(idDepartment); this.setIdDepartment(idDepartment);
empCount = empCount + 1; empCount++;
} }
public String getIdEmployee() { public String getIdEmployee() {
@@ -29,6 +41,10 @@ public class EmployeeData extends BaseData {
public void setIdEmployee(String idEmployee) { public void setIdEmployee(String idEmployee) {
this.idEmployee = 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() { public String getNmEmployee() {
@@ -36,16 +52,12 @@ public class EmployeeData extends BaseData {
} }
public void setNmEmployee(String nmEmployee) { public void setNmEmployee(String nmEmployee) {
// 2日目段階8
// String stripped = nmEmployee.strip();
// int length = stripped.length();
// if (nmEmployee == null) {
// System.out.println("社員名が空のため設定できませんでした");
// }
// if (length == 0) {
// System.out.println("社員名が空のため設定できませんでした");
// } else
this.nmEmployee = 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() { public String getKnEmployee() {
@@ -80,36 +92,30 @@ public class EmployeeData extends BaseData {
this.idDepartment = idDepartment; this.idDepartment = idDepartment;
} }
public static int getEmpCount() { @Override
return empCount; public String toString() {
}
return (this.getIdEmployee() + "\t" + this.getNmEmployee() + "\t" + this.getKnEmployee() + "\t"
+ this.getMailAddress() + "\t" + this.getPassword() + "\t" + this.getIdDepartment());
public static void setEmpCount(int empCount) {
EmployeeData.empCount = empCount;
} }
@Override @Override
public String toString() {
return getIdEmployee() + "\t" + getNmEmployee() + "\t" + getKnEmployee() + "\t" + getMailAddress()
+ "\t" + getPassword() + "\t" + getIdDepartment();
}
// public boolean isMatchId(String id) {
//
// return idEmployee.equals(id);
//
// }
public String toCSV() { public String toCSV() {
return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress() return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress() + ","
+ "," + getPassword() + "," + getIdDepartment(); + getPassword() + "," + getIdDepartment();
} }
public String getPrimaryKeyValue() { public String getPrimaryKeyValue() {
return idEmployee; return getIdEmployee();
} }
public static int empCount() { public boolean isMatchId(String id) {
return empCount; if (id == null || this.idEmployee == null) {
return false;
}
return this.idEmployee.equals(id);
} }
}
}

View File

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

View File

@@ -4,17 +4,18 @@ public class Item {
private int price; private int price;
private int stock; private int stock;
// void sell(int amount) {
// this.stock = this.stock - amount;
public void sell(int amount) { public void sell(int amount) {
setStock(this.getStock() - amount); this.setStock(this.getStock() - amount);
}
public int totalPrice() {
return price * stock;
} }
@Override @Override
public String toString() { public String toString() {
String output = getName() + " " + getPrice() + "円 (残り" + getStock() + "個)"; return (getName() + " " + getPrice() + "円 (残り" + getStock() + "個");
return output;
} }
public String getName() { public String getName() {

View File

@@ -1,10 +1,8 @@
public class JapaneseGreeting implements Greeting { public class JapaneseGreeting implements Greeting {
@Override @Override
public String hello() { public String hello() {
// TODO 自動生成されたメソッド・スタブ
return "こんにちは"; return "こんにちは";
} }
} }

View File

@@ -1,79 +1,130 @@
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
while (true) { // 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();
System.out.println("検索したい社員IDを入力してください(終了したい場合は0)"); BaseData[] employees = new BaseData[5];
Scanner scanner = new Scanner(System.in); // BaseData employee = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
String id = scanner.nextLine(); BaseData[] allData = new BaseData[11];
boolean bo = false; //
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");
BaseData employee = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10"); // 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());
// }
// }
// }
BaseData employee1 = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10"); // 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];
//
// System.out.println(emp.getMailAddress());
BaseData employee2 = new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "11"); // else if (allData[i] instanceof DepartmentData) {
// countt++;
// }
BaseData employee3 = new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "12"); // System.out.println("社員のデータ:" + count + "件");
// System.out.println("部署のデータ:" + countt + "件");
BaseData employee4 = new EmployeeData("10004", "三宅武", "ミヤケタケシ", "miya@hoge.jp,eee", "eee", "13"); // System.out.println(allData[i]);
allData[0] = employee; // employees[0] = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
allData[1] = employee1; // employees[1] = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10");
allData[2] = employee2; // employees[2] = new EmployeeData("10002", "麻枝史明", "マエダフミアキ", "fmak@hoge.jp", "ccc", "11");
allData[3] = employee3; // employees[3] = new EmployeeData("10003", "丸戸章介", "マルトショウスケ", "marusyo@hoge.jp", "ddd", "12");
allData[4] = employee4; // employees[4] = new EmployeeData("10004", "三宅武", "ミタケタケシ", "miya@hoge.jp", "eee", "13");
// //
BaseData dept = new DepartmentData("10", "役員"); // for (int i = 0; i < employees.length; i++) {
BaseData dept1 = new DepartmentData("11", "人事・総務部"); // System.out.println(allData[i]);
BaseData dept2 = new DepartmentData("12", "経理部"); // }
BaseData dept3 = new DepartmentData("13", "システム開発事業部"); // System.out.println("現在の社員データ件数:" + EmployeeData.getEmpCount() + "件");
BaseData dept4 = new DepartmentData("14", "教育事業部");
BaseData dept5 = new DepartmentData("15", "営業企画部");
allData[5] = dept;
allData[6] = dept1;
allData[7] = dept2;
allData[8] = dept3;
allData[9] = dept4;
allData[10] = dept5;
// for (int i = 0; i < allData.length; i++) {
// System.out.println(allData[i]);
// }
// System.out.println("現在の社員データ件数"+ EmployeeData.getEmpCount()+ "件");
for (int i = 0; i < allData.length; i++) {
// System.out.println(employees[i]);
if (allData[i].getPrimaryKeyValue().equals(id)) {
bo = true;
System.out.println(allData[i]);
// System.out.println(employee.toCSV());
// System.out.println(employee.getPrimaryKeyValue());
}
// employees[i].isMatchId("10002");
// employees[i].isMatchId("99999");
continue;
}
if (bo == false && !id.equals("0")) {
System.out.println("該当する社員が見つかりませんでした");
}
if (id.equals("0")) {
System.out.println("システムを終了します");
break;
}
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;
// }
// }
// 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]);
// break;
//
// }
// }
// if (!a) {
// System.out.println("該当する社員が見つかりませんでした");
// }
// if (input.equals("0")) {
// System.out.println("システムを終了します");
// break;
// }
// System.out.println(employee.toCSV());
// System.out.println(employee.getPrimaryKeyValue());
}
} }

View File

@@ -1,15 +1,14 @@
public class Rectangle extends Shape { public class Rectangle extends Shape{
private double width; private double width;
private double height; private double height;
public Rectangle(double width, double height) { public Rectangle(double width, double height) {
super("四角形"); super("四角形");
this.height = height;
this.width = width; this.width = width;
this.height = height;
} }
@Override @Override
public double area() { public double area() {
return width * height; return width * height;

View File

@@ -3,7 +3,6 @@ public abstract class Shape {
private String name; private String name;
public Shape(String name) { public Shape(String name) {
this.name = name; this.name = name;
} }
@@ -12,4 +11,5 @@ public abstract class Shape {
public void showInfo() { 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

@@ -2,24 +2,23 @@
public class Student { public class Student {
int studentId; int studentId;
String name; String name;
static int studentCount = 0; static int studentCount = 0;
{
studentCount++; public void printProfile () {
System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
} }
public Student(int studentId, String name) {
Student(int studentId, String name) {
this.studentId = studentId; this.studentId = studentId;
this.name = name; this.name = name;
studentCount++;
} }
public static int getStudentCount() { static int getStudentCount() {
return studentCount; return studentCount;
} }
void printProfile() {
System.out.println("学籍番号:" + this.studentId + " 名前:" + this.name);
}
} }