TreeNode.java

package test.utils.json;

import java.util.LinkedList;
import java.util.List;

import com.firefly.utils.json.Json;

public class TreeNode {
	private transient TreeNode parent;
	private List<TreeNode> children;
	private Integer id;
	private String name;

	public TreeNode getParent() {
		return parent;
	}

	public void setParent(TreeNode parent) {
		this.parent = parent;
	}

	public List<TreeNode> getChildren() {
		return children;
	}

	public void setChildren(List<TreeNode> children) {
		this.children = children;
	}

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public static void main(String[] args) {
		TreeNode root = new TreeNode();
		root.setId(0);
		root.setName("root");
		
		List<TreeNode> children = new LinkedList<TreeNode>();
		for (int i = 1; i < 10; i++) {
			TreeNode node = new TreeNode();
			node.setId(i);
			node.setName("children_" + i);
			node.setParent(root);
			List<TreeNode> children2 = new LinkedList<TreeNode>();
			for (int j = 11; j < 22; j++) {
				TreeNode node2 = new TreeNode();
				node2.setId(j);
				node2.setName("children_" + j);
				node2.setParent(node);
				node2.setChildren(new LinkedList<TreeNode>());
				children2.add(node2);
			} 
			node.setChildren(children2);
			children.add(node);
		}
		
		root.setChildren(children);
		
		System.out.println(Json.toJson(root));
	}

}