Add files via upload

Author: disha2sinha

Abstraction.java

@@ -0,0 +1,68 @@
+abstract class Car{
+    String color;
+    abstract double speed();
+    abstract public String toString();
+    public Car(String color)
+    {
+        System.out.println("Car constructor called");
+        this.color=color;
+    }
+    //concrete method
+    public String getColor()
+    {
+        return color;
+    }
+}
+class Audi extends Car{
+    double speed;
+    public Audi(String color,double speed)
+    {
+        super(color);
+        System.out.println("Audi constructor called");
+        this.speed=speed;
+    }
+    double speed()
+    {
+        return speed;
+    }
+    public String toString()
+    {
+        return "Audi Color:"+super.color+" speed:"+speed();
+    }
+
+}
+
+class Mercedes extends Car {
+
+    double distance;
+    double time;
+
+    public Mercedes(String color, double distance, double time) {
+        // calling Shape constructor
+        super(color);
+        System.out.println("Mercedes constructor called");
+        this.distance = distance;
+        this.time = time;
+    }
+
+    @Override
+    double speed() {
+        return distance/time;
+    }
+
+    @Override
+    public String toString() {
+        return "Mercedes color is " + super.color + "and speed is : " + speed();
+    }
+
+}
+
+public class Abstraction {
+    public static void main(String[] args) {
+        Car s1 = new Audi("Red", 2.2);
+        Car s2 = new Mercedes("Yellow", 2, 4);
+
+        System.out.println(s1.toString());
+        System.out.println(s2.toString());
+    }
+}