store.java

java 完全探索的随书源码

public class Store {
  static JavaBook programmersGuide;

  public static void init() {
    programmersGuide = new JavaBook();
  }

  public static void main(String argv[]) {
    init();
    getInfo(programmersGuide);
    getPrice(programmersGuide);
  }

  public static void getInfo(JavaBook item) {
    System.out.println("Product Description: "+ item.getDescription());
  }

  public static void getPrice(Sellable item) {
    System.out.println("Price: "+ item.getPricePerUnit());
  }
}