Composition Design Pattern

Author: zoom2manoj

src/com/design_pattern/structural/composition/Circle.java

@@ -0,0 +1,11 @@
+package com.design_pattern.structural.composition;
+
+public class Circle implements Shape{
+
+	@Override
+	public void draw(String fillColor) {
+		// TODO Auto-generated method stub
+		System.out.println("Circle fill color "+fillColor);
+	}
+
+}

src/com/design_pattern/structural/composition/CompositionPatternDesign.java

@@ -0,0 +1,24 @@
+package com.design_pattern.structural.composition;
+
+public class CompositionPatternDesign {
+	
+	public static void main(String[] arg){
+		
+		
+		Shape triangeShape = new Triangle();
+		Shape squireShape = new Square();
+		Shape circleShape = new Circle();
+		
+		Drawing drawing = new Drawing();
+		drawing.add(circleShape);
+		drawing.add(squireShape);
+		drawing.add(triangeShape);
+		drawing.draw("red");
+		
+		drawing.clear();
+		drawing.add(circleShape);
+		drawing.add(squireShape);
+		drawing.draw("green");
+		
+	}
+}

src/com/design_pattern/structural/composition/Drawing.java

@@ -0,0 +1,31 @@
+package com.design_pattern.structural.composition;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Drawing {
+
+	List<Shape> shapes = new ArrayList<Shape>();
+	
+	public void draw(String fillColor) {
+		// TODO Auto-generated method stub
+			for (Shape s: shapes) {
+				s.draw(fillColor);
+			}
+	}
+	
+	public void add(Shape s){
+		shapes.add(s);
+	}
+	
+	public void delete(Shape s) {
+		// TODO Auto-generated method stub
+		shapes.remove(s);
+	}
+	
+	public void clear() {
+		// TODO Auto-generated method stub
+		System.out.println("Clearing all the shapes from drawing");
+		shapes.clear();
+	}
+}

src/com/design_pattern/structural/composition/Shape.java

@@ -0,0 +1,6 @@
+package com.design_pattern.structural.composition;
+
+public interface Shape {
+
+	public void draw(String fillColor);
+}

src/com/design_pattern/structural/composition/Square.java

@@ -0,0 +1,11 @@
+package com.design_pattern.structural.composition;
+
+public class Square  implements Shape{
+
+	@Override
+	public void draw(String fillColor) {
+		// TODO Auto-generated method stub
+		System.out.println("Square fill color "+fillColor);
+	}
+		
+}

src/com/design_pattern/structural/composition/Triangle.java

@@ -0,0 +1,11 @@
+package com.design_pattern.structural.composition;
+
+public class Triangle implements Shape{
+
+	@Override
+	public void draw(String fillColor) {
+		// TODO Auto-generated method stub
+		System.out.println("Triangle fill color "+fillColor);
+	} 
+
+}