【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();

}
}