Java设计模式-----Composite模式

public abstract class MovieClass {

public String name;
public ArrayList<movieclass></movieclass> list;

public abstract void add(MovieClass component);

public abstract void remove(MovieClass component);

public abstract void display();
}

public class Program extends MovieClass {

public Program(String name) {
this.name = name;
}

public void add(MovieClass component) {

System.out.println("you can't add component to a proagram object");
}

public void display() {
System.out.println("----------" + name);
}

public void remove(MovieClass component) {
System.out.println("you can't remove component to a proagram object");
}
}

public class ConcreteMovieClass extends MovieClass {

public ConcreteMovieClass(String name) {
this.name = name;
list = new ArrayList<movieclass></movieclass>();
}

public void add(MovieClass component) {
list.add(component);
}

public void remove(MovieClass component) {
if (list.contains(component)) {
list.remove(component);
}
}

public void display() {
System.out.println(name);
for (MovieClass mc : list) {
mc.display();
}
}
}

public class Client {

public static void main(String args[]) {

Program pro = new Program("大汉天子");
Program pro2 = new Program("贞观长歌");
ConcreteMovieClass cmc = new ConcreteMovieClass("电视连续剧");// 一级分类
cmc.add(pro);
cmc.add(pro2);
Program pro3 = new Program("满城尽带黄金甲");
Program pro4 = new Program("色戒");
ConcreteMovieClass cmc2 = new ConcreteMovieClass("最新影视");// 一级分类
cmc2.add(pro3);
cmc2.add(pro4);
Program pro5 = new Program("越狱");
Program pro6 = new Program("英雄");
ConcreteMovieClass secondCmc = new ConcreteMovieClass("热播美剧");// 二级分类
secondCmc.add(pro5);
secondCmc.add(pro6);
cmc2.add(secondCmc);// 在一级分类（最新影视)下添加二级分类热播美剧
ConcreteMovieClass root = new ConcreteMovieClass("root");
root.add(cmc);
root.add(cmc2);
root.display();// 显示节目列表
}
}