Update design_patterns.txt

Author: joney000

design_patterns.txt

@@ -1 +1,47 @@
 https://ideone.com/pReC4E
+import java.util.*;
+import java.io.*;
+
+interface Shape {
+
+	void takeInput();
+	void draw();
+
+}
+
+class Circle implements Shape {
+	
+	private int c_x, c_y, r;
+
+	void takeInput(){
+		Scanner sc = new Scanner(System.in);
+		c_x = sc.nextInt(); c_y = sc.nextInt(); r = sc.nextInt();
+	}
+
+	void draw(){
+		System.out.println(this);
+	}
+
+	@Override
+	public toString(){
+		return "x : " + c_x + " y : " + c_y + " r : " + r;
+	}
+
+}
+
+class Rectangle implements Shape{
+	
+	private int w, h;
+
+	void draw(){
+		System.out.println(this);
+	}
+
+
+
+	@Override
+	public toString(){
+		return "w : " + w + " h : " + h;
+	}
+
+}