十四、组合模式

package test;

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

/*
 * 组合对象模式
 */
public class CompositeDemo {
    
    public static void main(String[] args) {
        CompositeParent compositeParent = new CompositeChild1("compositeParent");
        CompositeParent child1 = new CompositeChild1("child1");
        CompositeParent child2 = new CompositeChild1("child2");
        CompositeParent child3 = new CompositeChild1("child3");
        
        compositeParent.add(child1);
        compositeParent.add(child2);
        compositeParent.add(child3);
        
        for (CompositeParent row : compositeParent.rows) {
            row.say();
        }
    }
    
}

abstract class CompositeParent{
    public List<CompositeParent> rows = new ArrayList<>();
    public String name;
    public void say(){};
    public void add(CompositeParent compositeParent){};
}

class CompositeChild1 extends CompositeParent{
    
    public CompositeChild1(String name) {
        this.name = name;
    }
    
    @Override
    public void say() {
        System.out.println(name + " say that... ");
    }

    @Override
    public void add(CompositeParent compositeParent) {
        super.rows.add(compositeParent);
    }
    
}