gistfile1.txt

  public class TreeNode {

	  /** Stores value in particular node */
      int val;

	  /** Pointer to the left child of current node */
      TreeNode left;

	  /** Pointer to the right child of current node */
      TreeNode right;

	  /** Different constructors */
      TreeNode() {}
      TreeNode(int val) { this.val = val; }
      TreeNode(int val, TreeNode left, TreeNode right) {
          this.val = val;
          this.left = left;
          this.right = right;
      }
  }