Hello... I need code for AVL tree a bout public boolean insert(int e) public boolean delete (int e) public int search (int e)

Answer 1

Asking for a full homework is a bit rude.
If you just want to copy&paste some code then at least Google it yourself. But better try to make it and ask again if something is not clear. Pretty sure you'll get help when you show that you tried it first.

Answer 2

good point @Alex