BinaryTree.java

public class BinaryTree {

    private BinaryTreeNode root;

    private static class BinaryTreeNode {
        private Object data;
        private BinaryTreeNode left;
        private BinaryTreeNode right;
    }

    public BinaryTree getLeft() {


        return null;
    }

    public void setLeft() {

    }

    public BinaryTree getRight() {

        return null;
    }

    public void setRight() {

    }
}