update,

_resources/it114105/itp4510/Lab01/Lab1.2/q2/TestShape.java

@@ -0,0 +1,8 @@
+public class TestShape {
+    public static void main(String[] args) { // line 14
+        Shape s1 = new Square("Square1", 4); // line 15
+        Shape s2 = new Circle("Circle1", 2); // line 16
+        System.out.println("Area of circle: " + s2.area()); // line 17
+        System.out.println("Area of square: " + s1.area()); // line 18
+    }
+}