Abstract Class and Methods. With Inheritance

25_abstract_class_method.dart

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+
+// Objectives
+// 1. Abstract Method
+// 2. Abstract Class
+
+void main() {
+
+//	var shape = Shape();        // Error. Cannot instantiate Abstract Class
+
+	var rectangle = Rectangle();
+	rectangle.draw();
+
+	var circle = Circle();
+	circle.draw();
+}
+
+abstract class Shape {
+
+	// Define your Instance variable if needed
+	int x;
+	int y;
+
+	void draw();        // Abstract Method
+
+	void myNormalFunction() {
+		// Some code
+	}
+}
+
+
+class Rectangle extends Shape {
+
+	void draw() {
+		print("Drawing Rectangle.....");
+	}
+}
+
+class Circle extends Shape {
+
+	void draw() {
+		print("Drawing Circle.....");
+	}
+}