组合模式

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

/***
 * 叶子组件
 * @author zw
 *
 */
interface Lef extends Component{
	
}
/**
 * 容器组件
 * @author zw
 *
 */

interface Composite extends Component{
	
	void add(Component c);
	void remove(Component c);
	Component getChild(int index);
	
}

package composite;

import java.util.ArrayList;
import java.util.List;

/***
 * 抽象构建
 * @author zw
 *
 */
public interface AbstractFile {
	void killVirus();   //杀毒
}

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

	@Override
	public void killVirus() {
		System.out.println("正在对"+name+"的图像文件进行查杀...");
	}
	
}


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

	@Override
	public void killVirus() {
		System.out.println("正在对"+name+"的文本文件进行查杀...");
	}
	
}


class Folder implements AbstractFile{
	
	private String name;
	
	//定义容器，用来存放本容器下构建的子节点
	
	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() {
		// TODO Auto-generated method stub
		System.out.println("文件夹："+name+",正在进行查杀");
		for (AbstractFile file : list) {
			file.killVirus();
		}
	}
	
}

package composite;

public class Client {
	public static void main(String[] args) {
		AbstractFile  f1 = new imgFile("我的图片");
		Folder f2 = new Folder("c盘目录下");
		
		f2.add(f1);
		f2.killVirus();
	}
}

组合模式并非之前的组合。组合模式可以用来处理树形结构