ExpenseTracker

model : Expense.java -> service : ExpenseTrackerService.java -> main : ExpenseTracker.java

Here is the link program working be like:
👉 https://www.onlinegdb.com/bj9rbTYxN

This Java console application provides a simple Expense Tracker with the following features:

Add Expense: Add new expense details.
View Expense: Display all stored expenses.
Search Expense: Find a expense by category.
Update Expense: Modify existing contact details.
Calculate Expense: View Total Expenses.
Delete Expense: Remove a expense by id.
Exit: Exit the application.

It is a simple java program based on concept:

Java Basic
Java forEach loop
Object Oriented Programming
ArrayList
stream API