public class BinaryTreeNode <T extends Comparable> { private T data; private BinaryTreeNode left; private BinaryTreeNode right; private int size; public T getData() { return data; } public void setData(T data) { this.data = data; } public BinaryTreeNode getLeft() { return left; } public void setLeft(BinaryTreeNode left) { this.left = left; } public BinaryTreeNode getRight() { return right; } public void setRight(BinaryTreeNode right) { this.right = right; } }