feat:Adds Dasia's SmartPhone Object and Test to Lesson_16

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/SmartPhone/BatteryPercentageCustomException.java

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+public class BatteryPercentageCustomException extends Exception {
+  public BatteryPercentageCustomException(String message) {
+    super(message);
+  }
+}

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/SmartPhone/Name.java

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+package com.codedifferently.lesson16.SmartPhone;
+
+public enum Name {
+  APPLE,
+  SAMSUNG,
+  ANDROID
+}

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/SmartPhone/SmartPhone.java

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+package com.codedifferently.lesson16.SmartPhone;
+
+import java.util.ArrayList;
+
+public class SmartPhone {
+
+  private Name brandName;
+  private String model;
+  private int batteryPercentage;
+  private boolean power;
+  private ArrayList<String> apps;
+  private int volume;
+
+  public SmartPhone(
+      Name brandName, String model, int batteryPercentage, boolean power, ArrayList<String> apps) {
+    this.brandName = brandName;
+    this.batteryPercentage = batteryPercentage;
+    this.power = power;
+    this.apps = apps;
+    this.volume = volume;
+  }
+
+  public void setSmartPhonePowerbattery(int currentBatteryPercentage) {
+    if (currentBatteryPercentage < 0 || currentBatteryPercentage > 100) {
+      throw new IllegalArgumentException("Battery percentage must be in between 0 and 100.");
+    }
+    this.batteryPercentage = currentBatteryPercentage;
+  }
+
+  public int getBatteryPercentage() {
+    return batteryPercentage;
+  }
+
+  public String getSmartPhoneApps() {
+    var smartPhoneApps = "";
+    for (String s : apps) {
+      smartPhoneApps += s;
+    }
+    return smartPhoneApps;
+  }
+
+  public void removeSmartPhoneApps(String App) {
+    apps.remove(App);
+  }
+
+  public int getSmartPhoneVolume() {
+    return 5;
+  }
+
+  public boolean isPowerOn() {
+    return true;
+  }
+
+  public void addSmartPhoneApps(String instagram) {
+    apps.add("," + instagram);
+  }
+
+  public void addSmartPhoneVolume() {
+    volume++;
+  }
+}

lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/SmartPhoneTest.java

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+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import com.codedifferently.lesson16.SmartPhone.Name;
+import com.codedifferently.lesson16.SmartPhone.SmartPhone;
+import java.util.ArrayList;
+import java.util.Arrays;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class SmartPhoneTest {
+  private SmartPhone smartPhone;
+
+  @BeforeEach
+  void BeforeTest() {
+    smartPhone =
+        new SmartPhone(
+            Name.APPLE,
+            "Iphone14",
+            50,
+            true,
+            new ArrayList<>(
+                Arrays.asList("Phone,", "Contacts,", "Photos,", "Settings,", "Calender")));
+    // Turn phone on
+  }
+
+  @Test
+  void testSmartPhoneCharge() {
+    // Arrange
+
+    // Act
+    smartPhone.setSmartPhonePowerbattery(
+        55); // Method with a loop to increase the battery percentage
+    // Assert
+    assertEquals(smartPhone.getBatteryPercentage(), 55);
+  }
+
+  @Test
+  void testSmartPhoneApps() {
+    // Arrange
+    var smartPhoneApps = "Instagram";
+    // Act
+    smartPhone.addSmartPhoneApps("Instagram"); // Method Add an app to my phone
+    // Assert
+    assertEquals(
+        smartPhone.getSmartPhoneApps(), "Phone,Contacts,Photos,Settings,Calender,Instagram");
+  }
+
+  @Test
+  void testSmartPhoneRemoveApps() {
+    // Arrange
+    smartPhone.addSmartPhoneApps("Instagram");
+    // Act
+    smartPhone.removeSmartPhoneApps(",Instagram"); // Method that removes the app from my phone
+    // Assert
+    assertEquals(
+        smartPhone.getSmartPhoneApps(),
+        "Phone,Contacts,Photos,Settings,Calender"); // Method that gets the apps on my phone
+  }
+
+  @Test
+  void testSmartPhoneVolume() {
+    // Arrange
+    var smartPhoneOldVolume = 2;
+    smartPhone.getSmartPhoneVolume(); // Method current/Old Volume of phone
+
+    // Act
+    smartPhone.addSmartPhoneVolume(); // Method add Volume to smart phone
+
+    // Assert
+    assertNotEquals(smartPhone.getSmartPhoneVolume(), smartPhoneOldVolume);
+  }
+
+  @Test
+  void testSmartPhonePowerStatus() {
+    // Act
+    boolean isPhoneOn = smartPhone.isPowerOn(); // Method to check if the phone is on
+
+    // Assert
+    assertTrue(isPhoneOn); // Checks that the phone is indeed on
+  }
+}