I’m currently implementing a binary tree in Java and have managed to create the basic structure of the tree with the insertion method. However, I am encountering some difficulties with the following aspects:

Delete Method:

I’m unsure how to correctly implement the deletion process, especially for nodes that have two children. I know it involves finding the in-order successor or predecessor, but I’m not sure how to integrate this into my existing code.
Traversal Methods:

I need to implement in-order, pre-order, and post-order traversal methods. While I understand the theory behind these traversal types, I’m struggling to translate that into working code.
Testing the Tree:

I also want to know the best way to test if my binary tree is functioning correctly. What kind of test cases should I consider?
What I’ve Tried:

I’ve looked at some online resources and tutorials, but I’m still not confident about my implementation, especially for the delete operation.
I’ve written some basic code, but it’s not complete, and I’m not sure if I’m on the right track.
What I’m Looking For:

A step-by-step explanation or guidance on implementing the delete method for nodes with two children.
Code examples for the different types of traversals.
Suggestions on testing and verifying my binary tree implementation.

Delete Method:

I expected the delete method to correctly remove nodes from the binary tree, especially when dealing with nodes that have two children, and restructure the tree accordingly.
Traversal Methods:

I expected the traversal methods to correctly print out the nodes of the tree in the specified order (in-order, pre-order, and post-order). I was looking for the tree to be traversed in the order defined by each traversal type.
Overall Functionality:

I expected the binary tree to function as intended, allowing for the correct insertion, deletion, and traversal of nodes, without errors or unexpected behavior.