sandwich11.java

JAVA编程思想第四版英文原版习题答案. pdf原版的

// polymorphism/Sandwich11.java
// TIJ4 Chapter Polymorphism, Exercise 11, page 295
// Add class Pickle to Sandwich.java
package polymorphism;
import static net.mindview.util.Print.*;

class Meal {
	Meal() { print("Meal()"); } 
}

class Bread {
	Bread() { print("Bread()"); } 
}

class Cheese {
	Cheese() { print("Cheese()"); } 
}

class Lettuce {
	Lettuce() { print("Lettuce()"); } 
}

class Pickle {
	Pickle() { print("Pickle()"); }
}

class Lunch extends Meal {
	Lunch() { print("Lunch()"); } 
}

class PortableLunch extends Lunch {
	PortableLunch() { print("PortableLunch()"); } 
}	

public class Sandwich11 extends PortableLunch {
	private Bread b = new Bread();
	private Cheese c = new Cheese();
	private Pickle p = new Pickle();
	private Lunch l = new Lunch();
	public Sandwich11() { print("Sandwich()"); }
	public static void main(String[] args) {
		new Sandwich11();
	} 
}