java设计模式 GOF23 09 组合模式

package com.lz.combination;

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


/*
 * 抽象构建
 */
public interface IComponent {
    void op();
}

/*
 * 叶子构件
 */
interface ILeaf extends IComponent {
    @Override
    public void op();
}

/*
 * 容器构件
 */
interface IComposite extends IComponent {
    @Override
    public void op();
}

class Leaf implements ILeaf {
    private String name;
    
    public Leaf(String name) {
        super();
        this.name = name;
    }

    @Override
    public void op() {
        System.out.println("查杀"+this.name+"文件");
    }
    
}

/*
 * 容器实现类中包含存放子节点
 */
class Composite implements IComposite {
    
    private String name;
    
    public Composite(String name) {
        super();
        this.name = name;
    }

    List<IComponent> list = new ArrayList<IComponent>();
    
    public void add(IComponent i) {
        list.add(i);
    }
    
    public void delete(int index) {
        list.remove(index);
    }
    
    public IComponent get(int index) {
        return list.get(index);
    }
    
    @Override
    public void op() {
        System.out.println("查杀"+this.name+"目录");
        for ( IComponent i : list) {
            i.op();
        }
    }
}

package com.lz.combination;

/*
 * 组合模式测试类
 */
public class Test {
    public static void main(String[] args) {
        Leaf l1 = new Leaf("文件1");
        Leaf l2 = new Leaf("文件2");
        Leaf l3 = new Leaf("文件3");
        Leaf l4 = new Leaf("文件4");
        Leaf l5 = new Leaf("文件5");
        Leaf l6 = new Leaf("文件6");
        Composite c1 = new Composite("目录1");
        Composite c2 = new Composite("目录2");
        c2.add(l4);
        c2.add(l5);
        c2.add(l6);
        c1.add(l1);
        c1.add(l2);
        c1.add(l3);
        c1.add(c2);
        c1.op();
    }
}