Design a simple Online Bank Management System using OOP concepts in JAVA. Create at least 4 classes excluding test class. All content and output belongs to you. You can code the solution however you want, using at least three OOP concepts. You should define a function where customers will withdraw money according to their different status. In your test class you should create at least 3 different objects. The prompt messages for the user and outputs are entirely up to you. You should develop your own solutions.