public class Tree {

  public static void main(String[] args) {
    // We create the nodes of our tree
    Node<String> A = new Node<String>("A");
    Node<String> B = new Node<String>("B");
    Node<String> C = new Node<String>("C");
    Node<String> D = new Node<String>("D");
    Node<String> E = new Node<String>("E");
    Node<String> F = new Node<String>("F");
    Node<String> G = new Node<String>("G");
    Node<String> H = new Node<String>("H");
    Node<String> I = new Node<String>("I");
    Node<String> J = new Node<String>("J");
    Node<String> K = new Node<String>("K");

    // Root and building of the tree
    Node<String> root = A;
    A.left = B; A.right = C;
    B.left = D; B.right = E;
    D.left = H; D.right = I;
    E.left = J;
    C.left = F; C.right = G;
    G.left = K;
  }

}