sandwich.java

来自「Java语言程序设计 教程」· Java 代码 · 共 12 行

package meal;

public class Sandwich extends PortableLunch
{ Bread b = new Bread();
  Cheese c = new Cheese();
  Lettuce l = new Lettuce();
  Sandwich(){System.out.println("Sandwich()");}
  public static void main(String[] args)
  {  new Sandwich();  }
}