testpolymorphism.java

Java the UML Way 书中所有源码

/*
 * TestPolymorphism.java   E.L. 2001-08-17
 *
 */

class TestPolymorphism {
  public static void main(String[] args) {
    Material[] materials = new Material[5];
    materials[0] = new Paint("Heimdal Super", 20, 2, 10);
    materials[1] = new Wallpaper("Brocade77", 50, 12, 0.6);
    materials[2] = new Paint("Heimdal Extra", 10, 3, 10);
    materials[3] = new Flooring("Wool-Gold", 45, 5);
    materials[4] = new Flooring("Soft-Gold", 30, 5);
    Surface aSurface = new Surface("testSurface", 4, 5);

    for (int i = 0; i < materials.length; i++) {
      String name = materials[i].getName();
      double req = materials[i].getMaterialReq(aSurface);
      double price = materials[i].getTotalPrice(aSurface);
      System.out.println("Name: " + name + ", Requirement: "
        + req + " units, Price $" + price);
    }
  }
}

/* Example Run:
Name: Heimdal Super, Requirement: 4.0 units, Price $80.0
Name: Brocade77, Requirement: 4.0 units, Price $200.0
Name: Heimdal Extra, Requirement: 6.0 units, Price $60.0
Name: Wool-Gold, Requirement: 5.0 units, Price $225.0
Name: Soft-Gold, Requirement: 5.0 units, Price $150.0
*/