How to deletenode from BinaryTree?

Question

I tried to write a method to delete Node from BinaryTree from my understanding. is that method is true or not?!

public void deleteNode(TreeNode oldNode, TreeNode current) {
    if(oldNode.data != current.data) {
        System.out.print("Error");
        return;
    }
    if(oldNode.data == current.data) {
        current = null;
        System.out.print("Delete succesfully ");
        return;
    }
    if(oldNode.data > current.data) {
        deleteNode(oldNode,current.right);
    }
    if(oldNode.data < current.data) {
        deleteNode(oldNode,current.left);
    }
}