Практическая работа 1-20

students/23K0690/23K0690-p011/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0690</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0690-p011</artifactId>
+    <description>11 задание</description>
+</project>

students/23K0690/23K0690-p011/src/main/java/ru/mirea/practice/s23k0690/Task2.java

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+package ru.mirea.practice.s23k0690;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Scanner;
+
+public final class Task2 {
+    private Task2() {
+
+    }
+
+    public static void main(String[] args) {
+        try (Scanner scanner = new Scanner(System.in)) {
+            LocalDateTime currentDateTime = LocalDateTime.now();
+            System.out.println("Текущая дата и время: " + currentDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
+            System.out.print("Введите дату и время (ГГГГ-ММ-ДД ЧЧ:ММ:СС (Пример:2024-10-29 12:43:29)): ");
+            String userInput = scanner.nextLine();
+            LocalDateTime userDateTime = LocalDateTime.parse(userInput, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+            if (userDateTime.isBefore(currentDateTime)) {
+                System.out.println("Введенная дата и время раньше текущего времени.");
+            } else if (userDateTime.isAfter(currentDateTime)) {
+                System.out.println("Введенная дата и время позже текущего времени.");
+            } else {
+                System.out.println("Введенная дата и время совпадает с текущим временем.");
+            }
+        }
+    }
+}

students/23K0690/23K0690-p011/src/main/java/ru/mirea/practice/s23k0690/Task4.java

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+package ru.mirea.practice.s23k0690;
+
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Scanner;
+
+public final class Task4 {
+    private Task4() {
+
+    }
+
+    public static void main(String[] args) {
+        try (Scanner scanner = new Scanner(System.in)) {
+            System.out.print("Введите год (например, 2023): ");
+            final int year = scanner.nextInt();
+            System.out.print("Введите месяц (1-12): ");
+            final int month = scanner.nextInt();
+            System.out.print("Введите число (1-31): ");
+            final int day = scanner.nextInt();
+            System.out.print("Введите часы (0-23): ");
+            final int hours = scanner.nextInt();
+            System.out.print("Введите минуты (0-59): ");
+            final int minutes = scanner.nextInt();
+            Calendar calendar = Calendar.getInstance();
+            calendar.set(year, month - 1, day, hours, minutes, 0);
+            calendar.set(Calendar.MILLISECOND, 0);
+            SimpleDateFormat calendarFormat = new SimpleDateFormat("yyyy-MM-dd");
+            System.out.println("Созданный объект Calendar: " + calendarFormat.format(calendar.getTime()));
+            SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm");
+            Date date = calendar.getTime();
+            System.out.println("Созданный объект Date: " + dateFormat.format(date));
+        }
+    }
+}

students/23K0690/23K0690-p12/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0690</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0690-p12</artifactId>
+    <description>12 Задание</description>
+</project>

students/23K0690/23K0690-p12/src/main/java/ru/mirea/practice/s23k0690/Circle.java

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+package ru.mirea.practice.s23k0690;
+
+import java.awt.Color;
+import java.awt.Graphics;
+
+class Circle extends Shape {
+    private int radius;
+
+    public Circle(Color color, int x, int y, int radius) {
+        super(color, x, y);
+        this.radius = radius;
+    }
+
+    @Override
+    public void draw(Graphics g) {
+        g.setColor(color);
+        g.fillOval(x, y, radius, radius);
+    }
+}

students/23K0690/23K0690-p12/src/main/java/ru/mirea/practice/s23k0690/Rectangle.java

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+package ru.mirea.practice.s23k0690;
+
+import java.awt.Color;
+import java.awt.Graphics;
+
+class Rectangle extends Shape {
+    private int width;
+    private int height;
+
+    public Rectangle(Color color, int x, int y, int width, int height) {
+        super(color, x, y);
+        this.width = width;
+        this.height = height;
+    }
+
+    @Override
+    public void draw(Graphics g) {
+        g.setColor(color);
+        g.fillRect(x, y, width, height);
+    }
+}

students/23K0690/23K0690-p12/src/main/java/ru/mirea/practice/s23k0690/Shape.java

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+package ru.mirea.practice.s23k0690;
+
+import java.awt.Color;
+import java.awt.Graphics;
+
+abstract class Shape {
+    protected Color color;
+    protected int y;
+    protected int x;
+
+    public Shape(Color color, int x, int y) {
+        this.color = color;
+        this.x = x;
+        this.y = y;
+    }
+
+    public abstract void draw(Graphics g);
+}

students/23K0690/23K0690-p12/src/main/java/ru/mirea/practice/s23k0690/Task1.java

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+package ru.mirea.practice.s23k0690;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.util.Random;
+
+
+public class Task1 extends JPanel {
+    private Shape[] shapes;
+
+    public Task1() {
+        shapes = new Shape[20];
+        Random random = new Random();
+
+        for (int i = 0; i < shapes.length; i++) {
+            Color randomColor = new Color(random.nextInt(256), random.nextInt(256), random.nextInt(256));
+            int x = random.nextInt(800);
+            int y = random.nextInt(600);
+            if (random.nextBoolean()) {
+                int radius = random.nextInt(100) + 20; // Радиус от 20 до 119
+                shapes[i] = new Circle(randomColor, x, y, radius);
+            } else {
+                int width = random.nextInt(100) + 20; // Ширина от 20 до 119
+                int height = random.nextInt(100) + 20; // Высота от 20 до 119
+                shapes[i] = new Rectangle(randomColor, x, y, width, height);
+            }
+        }
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        for (Shape shape : shapes) {
+            shape.draw(g);
+        }
+    }
+
+    public static void main(String[] args) {
+        JFrame frame = new JFrame("Случайные фигуры");
+        Task1 randomShapes = new Task1();
+        frame.add(randomShapes);
+        frame.setSize(800, 600);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setLocationRelativeTo(null);
+        frame.setVisible(true);
+    }
+}

students/23K0690/23K0690-p12/src/main/java/ru/mirea/practice/s23k0690/Task2.java

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+package ru.mirea.practice.s23k0690;
+
+import java.util.Scanner;
+import javax.swing.JFrame;
+import javax.swing.ImageIcon;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import java.awt.Dimension;
+
+public final class Task2 {
+    private Task2() {}
+
+    public static void main(String[] args) {
+        displayImage();
+    }
+
+    private static void displayImage() {
+        try (Scanner in = new Scanner(System.in)) {
+            System.out.print("Введите полный путь к изображению: ");
+            String imagePath = in.nextLine();
+            JFrame frame = new JFrame("Показываем картинку");
+            ImageIcon icon = new ImageIcon(imagePath);
+            if (icon.getIconWidth() == -1) {
+                System.out.println("Ошибка: изображение не найдено по пути: " + imagePath);
+                return;
+            }
+            JPanel panel = new JPanel();
+            panel.add(new JLabel(icon));
+            frame.add(panel);
+            frame.setSize(new Dimension(700, 500));
+            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            frame.setLocationRelativeTo(null);
+            frame.setVisible(true);
+        }
+    }
+}

students/23K0690/23K0690-p13/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0690</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0690-p13</artifactId>
+    <description>13 Задание</description>
+</project>

students/23K0690/23K0690-p13/src/main/java/ru/mirea/practice/s23k0690/Person.java

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+package ru.mirea.practice.s23k0690;
+
+public final class Person {
+    private String lastName;
+    private String firstName;
+    private String middleName;
+
+    private Person() {}
+
+    public Person(String lastName, String firstName, String middleName) {
+        this.lastName = lastName;
+        this.firstName = firstName;
+        this.middleName = middleName;
+    }
+
+    public String getFullName() {
+        StringBuilder fullName = new StringBuilder(lastName);
+
+        if (firstName != null && !firstName.isEmpty()) {
+            fullName.append(" ").append(firstName.charAt(0)).append(".");
+        }
+
+        if (middleName != null && !middleName.isEmpty()) {
+            fullName.append(" ").append(middleName.charAt(0)).append(".");
+        }
+
+        return fullName.toString();
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getMiddleName() {
+        return middleName;
+    }
+
+    public void setMiddleName(String middleName) {
+        this.middleName = middleName;
+    }
+
+    public static void main(String[] args) {
+        Person person1 = new Person("Иванов", "Иван", "Иванович");
+        Person person2 = new Person("Петров", "Петр", null);
+        Person person3 = new Person("Сидоров", null, null);
+
+        System.out.println(person1.getFullName());
+        System.out.println(person2.getFullName());
+        System.out.println(person3.getFullName());
+    }
+}

students/23K0690/23K0690-p13/src/main/java/ru/mirea/practice/s23k0690/Task4.java

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+package ru.mirea.practice.s23k0690;
+
+import java.util.Scanner;
+
+public final class Task4 {
+    private String phoneNumber;
+
+    private Task4() {}
+
+    public Task4(String phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+
+    public String format() {
+        String formattedNumber;
+        String digits = phoneNumber.replaceAll("\\D", "");
+        if (digits.startsWith("8")) {
+            digits = "7" + digits.substring(1);
+        }
+
+        if (digits.startsWith("+")) {
+            formattedNumber = formatInternational(digits);
+        } else {
+            formattedNumber = formatDomestic(digits);
+        }
+        return formattedNumber;
+    }
+
+    private String formatInternational(String number) {
+        String countryCode = number.substring(1, number.length() - 10);
+        String localNumber = number.substring(number.length() - 10);
+        return "+" + countryCode + " " + localNumber.substring(0, 3) + "–" + localNumber.substring(3, 6) + "–" + localNumber.substring(6);
+    }
+
+    private String formatDomestic(String number) {
+        String localNumber = number.substring(1);
+        return "+7 " + localNumber.substring(0, 3) + "–" + localNumber.substring(3, 6) + "–" + localNumber.substring(6);
+    }
+
+    public static void main(String[] args) {
+        try (Scanner scanner = new Scanner(System.in)) {
+            System.out.print("Введите телефонный номер в формате +<Код страны> <Номер 10 цифр> или 8<Номер 10 цифр>: ");
+            String userInput = scanner.nextLine();
+            Task4 formatter = new Task4(userInput);
+            String formattedNumber = formatter.format();
+            System.out.println("Отформатированный номер: " + formattedNumber);
+        }
+    }
+}

students/23K0690/23K0690-p14/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>23K0690</artifactId>
+        <groupId>ru.mirea.practice</groupId>
+        <version>2024.1</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>23K0690-p14</artifactId>
+    <description>14 задание</description>
+</project>