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Author: ModestJean

src/Lab_I/ClassPackage/Circle.java

@@ -3,6 +3,7 @@
 public class Circle extends Point {
     private double radius;
 
+    // 6. Initializer
     {
         radius = 1;
     }
@@ -22,6 +23,7 @@ public double getArea() {
         return Math.PI * Math.pow(getRadius(), 2);
     }
 
+    // 7. Get and Set methods
     public double getRadius() {
         return radius;
     }

src/Lab_I/ClassPackage/Point.java

@@ -5,6 +5,7 @@
 public class Point implements AreaCalculable {
     private double coordinateX, coordinateY;
 
+    // 2. Overloaded methods
     public Point() {
         this.coordinateX = this.coordinateY = 0;
     }
@@ -18,6 +19,7 @@ public double getArea() {
         return 0;
     }
 
+    // 5. static method
     static boolean isPositiveRealNumber(double value) {
         return Double.isFinite(value) && (value > 0);
     }

src/Lab_I/ClassPackage/Rectangle.java

@@ -3,6 +3,7 @@
 public class Rectangle extends Point {
     private double width, height;
 
+    // 6. Initializer
     {
         width = 1;
         height = 1;
@@ -19,6 +20,7 @@ public Rectangle(double centerCoordinateX, double centerCoordinateY, double widt
         }
     }
 
+    // 1. Overridden method
     @Override
     public double getArea() {
         return getWidth() * getHeight();

src/Lab_I/Solver.java

@@ -1,11 +1,13 @@
 package Lab_I;
 
+// 4. Using two packages
 import Lab_I.ClassPackage.*;
 import Lab_I.InterfacePackage.*;
 import java.util.*;
 
 public class Solver {
     public static void main() {
+        // 3. Link to interface "AreaCalculable" and use interface method "getArea"
         List<AreaCalculable> someShapes = Arrays.asList(
                 new Point(),
                 new Point(0,0),