parcel2.java

Java与面向对象程序设计实验教学讲义.复数类的实现,复数类的复杂运算,身份证号码的分析,图形界面设计

public class Parcel2 {
  class Contents 
  {
    private int i = 11;
    public int value() { return i; }
  }
  class Destination 
  {
    private String label;
    Destination(String whereTo) 
    {    label = whereTo;   }
    String readLabel() { return label; }
  }
  public Destination to(String s) 
  {   return new Destination(s);  }
  public Contents cont() 
  {   return new Contents();   }
  public void ship(String dest) 
  {
    Contents c = cont();
    Destination d = to(dest);          
    System.out.println(d.readLabel());
  }  
  public static void main(String[] args)
 {
    Parcel2 p = new Parcel2();
    p.ship("Tanzania");
    Parcel2 q = new Parcel2();
    Contents c = q.cont();
    Destination d =q.to("Borneo");
  }
}