added lab1 ex2

src/lab1_decorator/ex2/Square.java

@@ -0,0 +1,14 @@
+package lab1_decorator.ex2;
+
+public class Square extends Shape {
+    private double size;
+
+    public Square(double size) {
+        this.size = size;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Drawing a square");
+    }
+}