package week1_0226; public class BinaryTreeNode { private Object data; private BinaryTreeNode left; private BinaryTreeNode right; public BinaryTreeNode(Object o){ this.data = o; } public Object getData() { return data; } public void setData(Object 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; } public BinaryTreeNode insert(Object o){ BinaryTreeNode node = new BinaryTreeNode(o); this.setRight(node); return node; } }