Assign 10

Assignment.java

@@ -0,0 +1,99 @@
+// Class name: Student
+class Student {
+    // Instance variables/fields
+    private String name;  // Instance variable 'name' of data type String
+    private int rollNo;   // Instance variable 'rollNo' of data type int
+
+    // Constructor with parameters
+    // Constructor Parameters: String s, int r
+    Student(String s, int r) {
+        name = s;   // Setting instance variable 'name' with the value of s
+        rollNo = r; // Setting instance variable 'rollNo' with the value of r
+    }
+
+    // Instance method: methodForDisplay
+    void methodForDisplay() {
+        System.out.println(name + "'s Roll No: " + rollNo);
+    }
+
+    public static void main(String[] args) {
+        // A Student object is created here with name "Rambo" and rollNo 21
+        Student obj1 = new Student("Rambo", 21); // Where the instance variables value gets set: name = "Rambo", rollNo = 21
+        obj1.methodForDisplay(); // Calling the instance method to display the student details
+    }
+}
+
+
+public class Dog {
+    // Private instance variables/fields
+    private String breed;
+    private String size;
+    private String color;
+    private int age;
+
+    // Constructor that sets the initial state of the data members via passed parameters
+    public Dog(String breed, String size, String color, int age) {
+        this.breed = breed;
+        this.size = size;
+        this.color = color;
+        this.age = age;
+    }
+
+    // Instance method: eat
+    public void eat(Food food) {
+        System.out.println(this.breed + " is eating.");
+        food.decreaseWeight(); // Simulate eating by decreasing the food's weight
+    }
+
+    // Instance method: run
+    public void run() {
+        System.out.println(this.breed + " is running.");
+        // Running could be associated with losing weight or getting tired, etc.
+        // For simplicity, we'll just print an action statement.
+    }
+
+    // Instance method: sleep
+    public void sleep() {
+        System.out.println(this.breed + " is sleeping.");
+        // Sleep could be associated with resting or time passing.
+    }
+
+    // Instance method: name
+    public void name() {
+        System.out.println("The dog's breed is " + this.breed + " and it is " + this.age + " years old.");
+    }
+
+    // Main method that creates 3 Dog objects as per the diagram
+    public static void main(String[] args) {
+        Dog dog1 = new Dog("Bulldog", "large", "light gray", 5);
+        Dog dog2 = new Dog("Beagle", "large", "orange", 6);
+        Dog dog3 = new Dog("German Shepherd", "large", "white & orange", 6);
+
+        dog1.name();
+        dog2.name();
+        dog3.name();
+
+        Food dogFood = new Food(5); // Initialize some food with a weight
+
+        dog1.eat(dogFood);
+        dog2.run();
+        dog3.sleep();
+    }
+}
+
+class Food {
+    private int weight; // Weight of the food
+
+    public Food(int weight) {
+        this.weight = weight;
+    }
+
+    public void decreaseWeight() {
+        if (this.weight > 0) {
+            this.weight--;
+            System.out.println("Food weight is now " + this.weight);
+        } else {
+            System.out.println("No more food left.");
+        }
+    }
+}