Inheritance

src/Objects/Bicycle.java

@@ -1 +1,5 @@
 package Objects;
+public class Bicycle extends Vehicle {
+    public String Typename = "Bike";
+    public int wheels = 2, pedals = 2;
+}

src/Objects/Car.java

@@ -1,12 +1,13 @@
 package Objects;
 
 public class Car extends Vehicle {
-	public String name; 
+	public String name, Typename = "Car"; 
 	public String make = "Chevrolet";
 	public String model = "Corvette";
 	public int year = 2020;
 	public String color = "blue";
 	public double price = 50000.00;
+    public int wheels = 4, door = 4;
 
     public Car(){}
 	public Car(String name){

src/Objects/Friend.java

@@ -0,0 +1,14 @@
+package Objects;
+
+public class Friend {
+
+
+	public String name;
+
+	public static int numberOfFriends;
+
+	public Friend(String name){
+		this.name=name;
+		numberOfFriends++;
+	}
+}

src/Objects/Vehicle.java

@@ -1,5 +1,16 @@
 package Objects;
 
 public class Vehicle {
-
+    // inheritance = 	the process where one class acquires,
+	//					the attributes and methods of another.
+    public String Typename;
+    public double speed;
+
+    public void go(String Typename){
+        System.out.println("The "+Typename+" is moving");
+    }
+    public void stop(String Typename){
+        System.out.println("The "+Typename+" is stopped");
+    }
+
 }

src/files/Inheritance.java

@@ -0,0 +1,22 @@
+package files;
+import Objects.Bicycle;
+import Objects.Car;
+
+public class Inheritance {
+       public static void main(String[] args) {
+        run();
+    }
+    public static void run() {Car car = new Car();
+
+		car.go(car.Typename);
+		car.stop(car.Typename);
+
+		Bicycle bike = new Bicycle();
+
+		bike.go(bike.Typename);
+		bike.stop(bike.Typename);
+
+		System.out.println(car.door);
+		System.out.println(bike.pedals);
+    }
+}

src/files/StaticKeyWord.java

@@ -0,0 +1,20 @@
+package files;
+
+import Objects.Friend;
+
+public class StaticKeyWord {
+    // static = modifier. A single copy of a variable/method is created and shared.
+	//			The class "owns" the static member
+
+    public static void main(String[] args) {
+        run();
+    }
+    public static void run() {
+        //Static key world can be used in function oriented programing. Usually it's not so used in OOP
+        Friend friend1 = new Friend("Sponegbob");
+		Friend friend2 = new Friend("Patrick");
+		Friend friend3 = new Friend("Patrick");
+
+		System.out.println(Friend.numberOfFriends);
+    }
+}