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BigDecimalOperations1.java

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+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class BigDecimalOperations1 {
+
+    public static double roundToHundredth(BigDecimal value) {
+        return value.setScale(2, RoundingMode.HALF_UP).doubleValue();
+    }
+
+    public static void main(String[] args) {
+        BigDecimal value = new BigDecimal("4.2545");
+        System.out.println(roundToHundredth(value));  // Debería imprimir 4.25
+    }
+}

BigDecimalOperations2.java

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+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class BigDecimalOperations2 {
+
+    public static double invertAndRoundToTenth(BigDecimal value) {
+        BigDecimal inverted = value.negate();
+        return inverted.setScale(1, RoundingMode.HALF_UP).doubleValue();
+    }
+
+    public static void main(String[] args) {
+        BigDecimal value1 = new BigDecimal("1.2345");
+        BigDecimal value2 = new BigDecimal("-45.67");
+
+        System.out.println(invertAndRoundToTenth(value1));  // Debería imprimir -1.2
+        System.out.println(invertAndRoundToTenth(value2));  // Debería imprimir 45.7
+    }
+}

Car.java

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+public abstract class Car {
+    private String vinNumber;
+    private String make;
+    private String model;
+    private int mileage;
+
+    public Car(String vinNumber, String make, String model, int mileage) {
+        this.vinNumber = vinNumber;
+        this.make = make;
+        this.model = model;
+        this.mileage = mileage;
+    }
+
+    public String getVinNumber() {
+        return vinNumber;
+    }
+
+    public String getMake() {
+        return make;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public int getMileage() {
+        return mileage;
+    }
+
+    public String getInfo() {
+        return String.format("VIN: %s, Make: %s, Model: %s, Mileage: %d", vinNumber, make, model, mileage);
+    }
+
+    public class Sedan extends Car {
+        public Sedan(String vinNumber, String make, String model, int mileage) {
+            super(vinNumber, make, model, mileage);
+        }
+    }
+
+    public class UtilityVehicle extends Car {
+        private boolean fourWheelDrive;
+
+        public UtilityVehicle(String vinNumber, String make, String model, int mileage, boolean fourWheelDrive) {
+            super(vinNumber, make, model, mileage);
+            this.fourWheelDrive = fourWheelDrive;
+        }
+
+        public boolean isFourWheelDrive() {
+            return fourWheelDrive;
+        }
+
+        @Override
+        public String getInfo() {
+            return String.format("%s, Four Wheel Drive: %b", super.getInfo(), fourWheelDrive);
+        }
+    }
+
+
+
+
+    public class Truck extends Car {
+        private double towingCapacity;
+
+        public Truck(String vinNumber, String make, String model, int mileage, double towingCapacity) {
+            super(vinNumber, make, model, mileage);
+            this.towingCapacity = towingCapacity;
+        }
+
+        public double getTowingCapacity() {
+            return towingCapacity;
+        }
+
+        @Override
+        public String getInfo() {
+            return String.format("%s, Towing Capacity: %.2f", super.getInfo(), towingCapacity);
+        }
+    }
+
+}

Video.java

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+public abstract class Video {
+    private String title;
+    private int duration;
+
+    public Video(String title, int duration) {
+        this.title = title;
+        this.duration = duration;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public int getDuration() {
+        return duration;
+    }
+
+    public String getInfo() {
+        return String.format("Title: %s, Duration: %d minutes", title, duration);
+    }
+
+    public class TvSeries extends Video {
+        private int episodes;
+
+        public TvSeries(String title, int duration, int episodes) {
+            super(title, duration);
+            this.episodes = episodes;
+        }
+
+        public int getEpisodes() {
+            return episodes;
+        }
+
+        @Override
+        public String getInfo() {
+            return String.format("%s, Episodes: %d", super.getInfo(), episodes);
+        }
+    }
+
+    public class Movie extends Video {
+        private double rating;
+
+        public Movie(String title, int duration, double rating) {
+            super(title, duration);
+            this.rating = rating;
+        }
+
+        public double getRating() {
+            return rating;
+        }
+
+        @Override
+        public String getInfo() {
+            return String.format("%s, Rating: %.1f", super.getInfo(), rating);
+        }
+    }
+
+
+}