serde.java

package com.company;

public class Main {

    static class TreeNode {
        int val;
        TreeNode left;
        TreeNode right;
        TreeNode(int x) { val = x; }
    }

    static class Codec {

        // Encodes a tree to a single string.
        public String serialize(TreeNode root) {

            return new String();
        }

        // Decodes your encoded data to tree.
        public TreeNode deserialize(String data) {

            return null;
        }
    }

    public static void main(String[] args) {
        Codec ser = new Codec();
        Codec deser = new Codec();

        TreeNode root = new TreeNode(1);
        root.left = new TreeNode(2);

        TreeNode ans = deser.deserialize(ser.serialize(root));
    }

}