inheritance and inheritance.homework packages

kodilla-basic-tests/build.gradle

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+plugins {
+    id 'java'
+}
+
+group = 'com.kodilla'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation platform('org.junit:junit-bom:5.10.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+}
+
+test {
+    useJUnitPlatform()
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/Application.java

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+package com.kodilla.inheritance;
+
+public class Application {
+    public static void main(String[] args) {
+        Car car = new Car(4, 5);
+        car.turnOnLights();
+
+        Convertible convertible = new Convertible(4, 2);
+        convertible.turnOnLights();
+        System.out.println(convertible.getSeats());
+    }
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/Car.java

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+package com.kodilla.inheritance;
+
+public class Car {
+    private int wheels;
+    private int seats;
+
+    public Car(int wheels, int seats) {
+        this.wheels = wheels;
+        this.seats = seats;
+    }
+
+    public int getWheels() {
+        return wheels;
+    }
+
+    public int getSeats() {
+        return seats;
+    }
+
+    public void turnOnLights() {
+        System.out.println("Lights were turned on");
+    }
+
+    public void openDoors() {
+        System.out.println("Opening 4 doors");
+    }
+
+    public void displayNumberOfSeats() {
+        System.out.println("Number of seats: " + seats);
+    }
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/Convertible.java

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+package com.kodilla.inheritance;
+
+public class Convertible extends Car {
+
+    public Convertible(int wheels, int seats) {
+        super(wheels, seats);
+        System.out.println("Convertible constructor");
+    }
+
+    public void openRoof() {
+        System.out.println("Opening roof...");
+    }
+
+    public void closeRoof() {
+        System.out.println("Closing roof...");
+    }
+
+    @Override
+    public void openDoors() {
+        System.out.println("Opening 2 doors");
+    }
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/homework/Application.java

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+package com.kodilla.inheritance.homework;
+
+public class Application {
+    public static void main(String[] args) {
+        OperatingSystem operatingSystem = new OperatingSystem(2005);
+        operatingSystem.turnOn();
+        operatingSystem.turnOff();
+        operatingSystem.displayReleaseYear();
+
+        Windows10 win10 = new Windows10();
+        win10.turnOn();
+        win10.turnOff();
+        win10.displayReleaseYear();
+
+        Windows11 win11 = new Windows11();
+        win11.turnOn();
+        win11.turnOff();
+        win11.displayReleaseYear();
+    }
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/homework/OperatingSystem.java

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+package com.kodilla.inheritance.homework;
+
+public class OperatingSystem {
+    private int releaseYear;
+
+    public OperatingSystem(int releaseYear) {
+        this.releaseYear = releaseYear;
+    }
+
+    public void turnOn() {
+        System.out.println("turning system on...");
+    }
+
+    public void turnOff() {
+        System.out.println("turning system off...");
+    }
+
+    public void displayReleaseYear() {
+        System.out.println("this system's release year: " + releaseYear);
+    }
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/homework/Windows10.java

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+package com.kodilla.inheritance.homework;
+
+public class Windows10 extends OperatingSystem {
+    public Windows10() {
+        super(2015);
+    }
+}

kodilla-basic-tests/src/main/java/com/kodilla/inheritance/homework/Windows11.java

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+package com.kodilla.inheritance.homework;
+
+public class Windows11 extends OperatingSystem {
+    public Windows11() {
+        super(2021);
+    }
+}