PatternFactory: Initial commit

System Development/PatternFactory/src/Circle.java

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+public class Circle implements Shape {
+
+   @Override
+   public void draw() {
+      System.out.println("Inside Circle::draw() method.");
+   }
+}

System Development/PatternFactory/src/PatternFactory.java

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+public class PatternFactory {
+
+   public static void main(String[] args) {
+      ShapeFactory shapeFactory = new ShapeFactory();
+
+      //get an object of Circle and call its draw method.
+      Shape shape1 = shapeFactory.getShape("CIRCLE");
+
+      //call draw method of Circle
+      shape1.draw();
+
+      //get an object of Rectangle and call its draw method.
+      Shape shape2 = shapeFactory.getShape("RECTANGLE");
+
+      //call draw method of Rectangle
+      shape2.draw();
+
+      //get an object of Square and call its draw method.
+      Shape shape3 = shapeFactory.getShape("SQUARE");
+
+      //call draw method of square
+      shape3.draw();
+   }
+}

System Development/PatternFactory/src/Rectangle.java

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+public class Rectangle implements Shape {
+
+   @Override
+   public void draw() {
+      System.out.println("Inside Rectangle::draw() method.");
+   }
+}

System Development/PatternFactory/src/Shape.java

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+
+public interface Shape {
+	void draw();
+}

System Development/PatternFactory/src/ShapeFactory.java

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+public class ShapeFactory {
+	
+   //use getShape method to get object of type shape 
+   public Shape getShape(String shapeType){
+      if(shapeType == null){
+         return null;
+      }		
+      if(shapeType.equalsIgnoreCase("CIRCLE")){
+         return new Circle();
+         
+      } else if(shapeType.equalsIgnoreCase("RECTANGLE")){
+         return new Rectangle();
+         
+      } else if(shapeType.equalsIgnoreCase("SQUARE")){
+         return new Square();
+      }
+      
+      return null;
+   }
+}

System Development/PatternFactory/src/Square.java

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+public class Square implements Shape {
+
+   @Override
+   public void draw() {
+      System.out.println("Inside Square::draw() method.");
+   }
+}