组合设计模式1

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/** * 组合设计模式：组合设计模式主要是组装树状的数据， * 当数据拥有同类型的子节点时，可以使用组合设计模式对数据进行组装 * @author  * @version 0.1 */public class TreeNode {    private String name;    private TreeNode parent;    private List<TreeNode> children = new ArrayList<TreeNode>();    public TreeNode(String name){        this.name = name;    }    //添加子节点方法    public void add(TreeNode node){        children.add(node);    }    //删除子节点方法    public void remove(TreeNode node){        children.remove(node);    }    //返回子节点的迭代器    public Iterator<TreeNode> getChildren(){        return children.iterator();    }    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;    }}

/** * @author  * @version 0.1 */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);    }}

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