Java 之 23 种设计模式解析——11、组合模式（Composite）

﹏ヽ暗。殇╰゛Y 2022-05-17 02:42 233阅读 0赞

### 11、组合模式（Composite） ###

组合模式有时又叫**部分-整体**模式在处理类似树形结构的问题时比较方便，看看关系图：

![70][]

直接来看代码：

public class TreeNode {  
          
        private String name;  
        private TreeNode parent;  
        private Vector<TreeNode> children = new Vector<TreeNode>();  
          
        public TreeNode(String name){  
            this.name = name;  
        }  
      
        public String getName() {  
            return name;  
        }  
      
        public void setName(String name) {  
            this.name = name;  
        }  
      
        public TreeNode getParent() {  
            return parent;  
        }  
      
        public void setParent(TreeNode parent) {  
            this.parent = parent;  
        }  
          
        //添加孩子节点  
        public void add(TreeNode node){  
            children.add(node);  
        }  
          
        //删除孩子节点  
        public void remove(TreeNode node){  
            children.remove(node);  
        }  
          
        //取得孩子节点  
        public Enumeration<TreeNode> getChildren(){  
            return children.elements();  
        }  
    }

public class Tree {  
      
        TreeNode root = null;  
      
        public Tree(String name) {  
            root = new TreeNode(name);  
        }  
      
        public static void main(String[] args) {  
            Tree tree = new Tree("A");  
            TreeNode nodeB = new TreeNode("B");  
            TreeNode nodeC = new TreeNode("C");  
              
            nodeB.add(nodeC);  
            tree.root.add(nodeB);  
            System.out.println("build the tree finished!");  
        }  
    }

使用场景：将多个对象组合在一起进行操作，常用于表示树形结构中，例如二叉树，数等。

## 目录：（点击进入相应页面） ##

# [概述、六大原则][Link 1] #

# 一、[创建模式][Link 2] #

**[0、][Link 2][简单工厂模式][Link 2]**

**[1.工厂方法模式（Factory Method）][1._Factory Method]**

**[2、抽象工厂模式][2]**

**[3、单例模式（Singleton）][3_Singleton]**

**[4、建造者模式（Builder）][4_Builder]**

**[5、原型模式（Prototype）][4_Builder]**

# **二、[结构模式（7种）][7]** #

**[6、适配器模式][7]**

**[7、装饰模式（Decorator）][7_Decorator]**

**[8、代理模式（Proxy）][8_Proxy]**

**[9、外观模式（Facade）][9_Facade]**

**[10、桥接模式（Bridge）][10_Bridge]**

**[11、组合模式（Composite][11_Composite][）][11_Composite]**

**[12、享元模式（Flyweight）][12_Flyweight]**

# **三、[关系模式（11种）][11]** #

**[13、策略模式（strategy）][11]**

**[14、模板方法模式（Template Method）][14_Template Method]**

**[15、观察者模式（Observer）][15_Observer]**

**[16、迭代子模式（Iterator）][16_Iterator]**

**[17、责任链模式（Chain of Responsibility）][17_Chain of Responsibility]**

**[18、命令模式（Command）][18_Command]**

**[19、备忘录模式（Memento][19_Memento]**

**[20、状态模式（State）][20_State]**

**[21、访问者模式（Visitor）][21_Visitor]**

**[22、中介者模式（Mediator）][22_Mediator]**

**[23、解释器模式（Interpreter）][23_Interpreter]**

[70]: /images/20220517/fd3212b75b7c48a4bb65a68701605a4d.png
[Link 1]: https://blog.csdn.net/bifuguo/article/details/81431513
[Link 2]: https://blog.csdn.net/bifuguo/article/details/81432164
[1._Factory Method]: https://blog.csdn.net/bifuguo/article/details/81432186
[2]: https://blog.csdn.net/bifuguo/article/details/81432269
[3_Singleton]: https://blog.csdn.net/bifuguo/article/details/81432392
[4_Builder]: https://blog.csdn.net/bifuguo/article/details/81432437
[7]: https://blog.csdn.net/bifuguo/article/details/81432564
[7_Decorator]: https://blog.csdn.net/bifuguo/article/details/81432726
[8_Proxy]: https://blog.csdn.net/bifuguo/article/details/81432762
[9_Facade]: https://blog.csdn.net/bifuguo/article/details/81432774
[10_Bridge]: https://blog.csdn.net/bifuguo/article/details/81432829
[11_Composite]: https://blog.csdn.net/bifuguo/article/details/81432877
[12_Flyweight]: https://blog.csdn.net/bifuguo/article/details/81432901
[11]: https://blog.csdn.net/bifuguo/article/details/81432950
[14_Template Method]: https://blog.csdn.net/bifuguo/article/details/81432992
[15_Observer]: https://blog.csdn.net/bifuguo/article/details/81433043
[16_Iterator]: https://blog.csdn.net/bifuguo/article/details/81433082
[17_Chain of Responsibility]: https://blog.csdn.net/bifuguo/article/details/81433127
[18_Command]: https://blog.csdn.net/bifuguo/article/details/81433162
[19_Memento]: https://blog.csdn.net/bifuguo/article/details/81434127
[20_State]: https://blog.csdn.net/bifuguo/article/details/81434167
[21_Visitor]: https://blog.csdn.net/bifuguo/article/details/81434187
[22_Mediator]: https://blog.csdn.net/bifuguo/article/details/81434209
[23_Interpreter]: https://blog.csdn.net/bifuguo/article/details/81434237