@@ -0,0 +1,357 @@
+package com.test;%0A%0Apublic class TreeNode %7B%0A    int val;%0A    TreeNode left;%0A    TreeNode right;%0A    TreeNode(int x) %7B val = x; %7D%0A%09public TreeNode getLeft() %7B%0A%09%09return left;%0A%09%7D%0A%09public void setLeft(TreeNode left) %7B%0A%09%09this.left = left;%0A%09%7D%0A%09public TreeNode getRight() %7B%0A%09%09return right;%0A%09%7D%0A%09public void setRight(TreeNode right) %7B%0A%09%09this.right = right;%0A%09%7D%0A    %0A%7D%0A

Create TreeNode.java