public class SearchTreeNode<E> {
    public E data;		  // data stored at this SearchTreeNode<E>
    public SearchTreeNode<E> left;  // reference to left subtree
    public SearchTreeNode<E> right; // reference to right subtree
		
    // post: constructs a leaf node with given data
    public SearchTreeNode(E data) {
        this(data, null, null);
    }
				
    // post: constructs a SearchTreeNode<E> with the given data and links
    public SearchTreeNode(E data, SearchTreeNode<E> left, SearchTreeNode<E> right) {
        this.data = data;
        this.left = left;
        this.right = right;
    }
}