being lab 03, TODO: override equals + hashCode

src/code/ca/bcit/comp2522/lab03/IDevice.java

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+package ca.bcit.comp2522.lab03;
+
+public abstract class IDevice {
+    private final String purpose;
+
+    IDevice(final String purpose) {
+        this.purpose = purpose;
+    }
+
+    abstract void printDetails();
+
+    protected String getPurpose() {
+        return this.purpose;
+    }
+
+    @Override
+    public String toString() {
+        return this.purpose;
+    }
+}

src/code/ca/bcit/comp2522/lab03/IPad.java

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+package ca.bcit.comp2522.lab03;
+
+public class IPad extends IDevice {
+    private final boolean hasCase;
+    private final String OSVersion;
+
+    IPad(
+        final boolean hasCase,
+        final String OSVersion
+    ) {
+        super("learning");
+
+        this.hasCase = hasCase;
+        this.OSVersion = OSVersion;
+    }
+
+    protected void printDetails() {
+        final StringBuilder details;
+
+        details = new StringBuilder();
+
+        details.append("Has case: ");
+        details.append(this.hasCase);
+        details.append(" OS Version: ");
+        details.append(this.OSVersion);
+
+        System.out.println(details.toString());
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + " " + this.hasCase + " " + this.OSVersion;
+    }
+}

src/code/ca/bcit/comp2522/lab03/IPhone.java

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+package ca.bcit.comp2522.lab03;
+
+public class IPhone extends IDevice {
+    private final double remainingPhonePlanMinutes;
+    private final String carrier;
+
+    IPhone(
+        final double remainingPhonePlanMinutes,
+        final String carrier
+    ) {
+        super("talking");
+
+        this.remainingPhonePlanMinutes = remainingPhonePlanMinutes;
+        this.carrier = carrier;
+    }
+
+    protected void printDetails() {
+        final StringBuilder details;
+
+        details = new StringBuilder();
+
+        details.append(this.remainingPhonePlanMinutes);
+        details.append(" remaining minutes (");
+        details.append(this.carrier);
+        details.append(")");
+
+        System.out.println(details.toString());
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + " " + this.remainingPhonePlanMinutes + " " + this.carrier;
+    }
+}

src/code/ca/bcit/comp2522/lab03/IPhone16.java

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+package ca.bcit.comp2522.lab03;
+
+public class IPhone16 extends IPhone {
+    final boolean highResolutionCamera;
+    final int memoryGB;
+
+    IPhone16(
+        final double remainingPhonePlanMinutes,
+        final String carrier,
+        final boolean highResolutionCamera,
+        final int memoryGB
+    ) {
+        super(remainingPhonePlanMinutes, carrier);
+
+        this.highResolutionCamera = highResolutionCamera;
+        this.memoryGB = memoryGB;
+    }
+}

src/code/ca/bcit/comp2522/lab03/IPod.java

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+package ca.bcit.comp2522.lab03;
+
+public class IPod extends IDevice {
+    private final int numberOfSongs;
+    private final double maxVolumeDecibels;
+
+    IPod(
+        final int numberOfSongs,
+        final double maxVolumeDecibels
+    ) {
+        super("music");
+
+        this.numberOfSongs = numberOfSongs;
+        this.maxVolumeDecibels = maxVolumeDecibels;
+    }
+
+    protected void printDetails() {
+        final StringBuilder details;
+
+        details = new StringBuilder();
+
+        details.append(this.numberOfSongs);
+        details.append(" songs, ");
+        details.append(this.maxVolumeDecibels);
+        details.append(" dB.");
+
+        System.out.println(details.toString());
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + " " +  this.numberOfSongs + " " + this.maxVolumeDecibels;
+    }
+}

src/code/ca/bcit/comp2522/lab03/Main.java

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+package ca.bcit.comp2522.lab03;
+
+public class Main {
+    public static void main(final String[] args) {
+        // Create IPod objects
+        final IPod ipod1;
+        final IPod ipod2;
+        final IPod ipod3;
+
+        ipod1 = new IPod(300, 80.0); // 300 songs, max volume 80.0 dB
+        ipod2 = new IPod(400, 85.0); // 400 songs, max volume 85.0 dB
+        ipod3 = new IPod(300, 70.0); // 300 songs, max volume 70.0 dB
+
+        // Test equality and inequality for IPod
+        System.out.println("IPod Equality Test:");
+        if (!ipod1.equals(ipod2)) {
+            System.out.println("CORRECT: ipod1 is not equal to ipod2");
+        } else {
+            System.out.println("INCORRECT: ipod1 should not be equal to ipod2");
+        }
+
+        if (ipod1.equals(ipod3)) {
+            System.out.println("CORRECT: ipod1 is equal to ipod3");
+        } else {
+            System.out.println("INCORRECT: ipod1 should be equal to ipod3");
+        }
+
+        System.out.println();
+
+        // Create IPad objects
+        final IPad ipad1;
+        final IPad ipad2;
+        final IPad ipad3;
+
+        ipad1 = new IPad(true, "iPadOS 15"); // Has case, OS version iPadOS 15
+        ipad2 = new IPad(false, "iPadOS 14"); // No case, OS version iPadOS 14
+        ipad3 = new IPad(true, "iPadOS 15"); // Has case, OS version iPadOS 15
+
+        // Test equality and inequality for IPad
+        System.out.println("IPad Equality Test:");
+
+        if (!ipad1.equals(ipad2)) {
+            System.out.println("CORRECT: ipad1 is not equal to ipad2");
+        } else {
+            System.out.println("INCORRECT: ipad1 should not be equal to ipad2");
+        }
+
+        if (ipad1.equals(ipad3)) {
+            System.out.println("CORRECT: ipad1 is equal to ipad3");
+        } else {
+            System.out.println("INCORRECT: ipad1 should be equal to ipad3");
+        }
+        System.out.println();
+
+        // Create IPhone objects
+        final IPhone iphone1;
+        final IPhone iphone2;
+        final IPhone iphone3;
+        iphone1 = new IPhone(120.0, "Verizon"); // 120 minutes, carrier Verizon
+        iphone2 = new IPhone(180.0, "T-Mobile"); // 180 minutes, carrier T-Mobile
+        iphone3 = new IPhone(120.0, "AT&T"); // 120 minutes, carrier AT&T
+
+        // Test equality and inequality for IPhone
+        System.out.println("IPhone Equality Test:");
+        if (!iphone1.equals(iphone2)) {
+            System.out.println("CORRECT: iphone1 is not equal to iphone2");
+        } else {
+            System.out.println("INCORRECT: iphone1 should not be equal to iphone2");
+        }
+        if (iphone1.equals(iphone3)) {
+            System.out.println("CORRECT: iphone1 is equal to iphone3");
+        } else {
+            System.out.println("INCORRECT: iphone1 should be equal to iphone3");
+        }
+        System.out.println();
+
+        // Create IPhone16 objects
+        final IPhone16 iphone16_1;
+        final IPhone16 iphone16_2;
+        final IPhone16 iphone16_3;
+
+        iphone16_1 = new IPhone16(100.0, "Verizon", true, 512); // 100 minutes, high-res camera, 512 GB
+        iphone16_2 = new IPhone16(100.0, "Verizon", true, 256); // 100 minutes, high-res camera, 256 GB
+        iphone16_3 = new IPhone16(100.0, "Verizon", false, 512); // 100 minutes, no high-res camera, 512 GB
+
+        // Test equality and inequality for IPhone16
+        System.out.println("IPhone16 Equality Test:");
+        if (iphone16_1.equals(iphone16_2)) {
+            System.out.println("CORRECT: iphone16_1 is equal to iphone16_2");
+        } else {
+            System.out.println("INCORRECT: iphone16_1 should be equal to iphone16_2");
+        }
+        if (!iphone16_1.equals(iphone16_3)) {
+            System.out.println("CORRECT: iphone16_1 is not equal to iphone16_3");
+        } else {
+            System.out.println("INCORRECT: iphone16_1 should not be equal to iphone16_3");
+        }
+        System.out.println();
+    }
+}