Exercise 2

src/App.java

 public class App {
     public static void main(String[] args) throws Exception {
-        Shape shape1 = new Triangle(3);
+        Shape shape1 = new Rectangle(5, 6);
         shape1.draw();
     }
 }

src/Rectangle.java

+public class Rectangle extends Shape{
+  // An equilateral triangle
+
+  public Rectangle() {
+    this.width = 3;
+    this.height = 4;
+  }
+    public Rectangle(int a, int b) {
+    this.width = a;
+    this.height = b;
+  }
+
+  public Rectangle(int b) {
+    this.width = 3;
+    this.height = b;
+  }
+
+  @Override  
+  public void draw() {
+    System.out.print(" ");
+    for (int loop1=0; loop1<width; loop1++){
+      System.out.print("__");
+    }
+    System.out.println("");
+    for (int loop2=0; loop2<height; loop2++){ // Loops 3 times
+      System.out.print("|");
+      for (int loop3=0; loop3<width; loop3++){
+        if (loop2 == (height - 1))
+        {
+          System.out.print("__");
+        }
+        else{
+          System.out.print("  ");
+        }
+      }
+      System.out.println("|");
+    }
+    System.out.println("");
+  }
+
+  @Override
+  public float area() {
+    float area = width * height;
+    return area;
+  }
+
+  @Override
+  public float circumference() {
+    float circ = (width + height) * 2;
+    return circ;
+  }
+
+}

src/Shape.java

 abstract public class Shape {
 
   protected int size;
+  protected int width;
+  protected int height;
 
   abstract public void draw();
   abstract public float area();
@@ -8,6 +10,10 @@ abstract public class Shape {
 
   public int getSize() { return size; }
   public void setSize(int size) { this.size = size; }
+  public int getWidth() { return width; }
+  public void setWidth(int width) { this.width = width; }
+  public int getHeight() { return height; }
+  public void setHeight(int height) { this.height = height; }
 
   public Shape(){
     this.size = 3;

src/Square.java

+public class Square extends Shape{
+  // An equilateral triangle
+
+  public Square() {
+    super(3);
+  }
+    public Square(int i) {
+    super(i);
+  }
+
+  @Override  
+  public void draw() {
+    System.out.print(" ");
+    for (int loop1=0; loop1<size; loop1++){
+      System.out.print("__");
+    }
+    System.out.println("");
+    for (int loop2=0; loop2<size; loop2++){ // Loops 3 times
+      System.out.print("|");
+      for (int loop3=0; loop3<size; loop3++){
+        if (loop2 == (size - 1))
+        {
+          System.out.print("__");
+        }
+        else{
+          System.out.print("  ");
+        }
+      }
+      System.out.println("|");
+    }
+    System.out.println("");
+  }
+
+  @Override
+  public float area() {
+    float fSize = size;
+    float area = fSize * fSize;
+    return area;
+  }
+
+  @Override
+  public float circumference() {
+    float fSize = size;
+    float circ = fSize + fSize + fSize + fSize;
+    return circ;
+  }
+
+}