【结构型模式】组合模式（Composite）之23种java设计模式

Component抽象组件接口

/**
 * 抽象组件
 * @author Administrator
 *
 */
public interface Component {
	void operation();
}

//叶子组件
interface Leaf extends Component {
}
//容器组件
interface Composite extends Component {
	void add(Component c);
	void remove(Component c);
	Component getChild(int index);
}

AbstractFile

//抽象构建
public interface AbstractFile {
	void killVirus();  //杀毒
}


class ImageFile implements AbstractFile {
	private String name;
	
	public ImageFile(String name) {
		super();
		this.name = name;
	}

	@Override
	public void killVirus() {
		System.out.println("---图像文件："+name+",进行查杀！");
	}
	
}
class TextFile implements AbstractFile {
	private String name;
	
	public TextFile(String name) {
		super();
		this.name = name;
	}
	
	@Override
	public void killVirus() {
		System.out.println("---文本文件："+name+",进行查杀！");
	}
}
class VideoFile implements AbstractFile {
	private String name;
	
	public VideoFile(String name) {
		super();
		this.name = name;
	}
	
	@Override
	public void killVirus() {
		System.out.println("---视频文件："+name+",进行查杀！");
	}
}

class Folder implements AbstractFile {
	private String name;
	//定义容器，用来存放本容器构建下的子节点
	private List<AbstractFile> list = new ArrayList<AbstractFile>();
	
	public Folder(String name) {
		super();
		this.name = name;
	}

	public void add(AbstractFile file){
		list.add(file);
	}
	public void remove(AbstractFile file){
		list.remove(file);
	}
	public AbstractFile getChild(int index){
		return list.get(index);
	}

	@Override
	public void killVirus() {
		System.out.println("---文件夹："+name+",进行查杀");
		
		for (AbstractFile file : list) {
			file.killVirus();
		}
		
	}
	
}

Client

public class Client {
	public static void main(String[] args) {
		AbstractFile f2,f3,f4,f5;
		Folder f1 = new Folder("我的收藏");
		
		f2 = new ImageFile("老高的大头像.jpg");
		f3 = new TextFile("Hello.txt");
		f1.add(f2);
		f1.add(f3);
		
		Folder f11 = new Folder("电影");
		f4 = new VideoFile("笑傲江湖.avi");
		f5 = new VideoFile("神雕侠侣.avi");
		f11.add(f4);
		f11.add(f5);
		f1.add(f11);
		
		
//		f2.killVirus();
		
		f1.killVirus();
		
		
	}
}