DEV Community: Kobinath Ramalingam

Build a Simple Water System Calculator in Java Using Swing

Kobinath Ramalingam — Thu, 08 Jan 2026 12:09:56 +0000

If you’re just beginning to learn Java GUI programming creating an Water System Calculator is a fantastic project for a beginner. This tutorial will help you discover how to build a basic water-bill calculator by using Java Swing and simple code and the best methods.The Java project is great for college projects, practical learning, or for adding an element to your resume.

water system calculator java swing gui

What Will You Build?
You’ll design the GUI application that allows users to:

Then enter the water consumption (litres).

Click Calculate.

Check out the total bill for water in relation to usage.

The water bill costs:

×
Ezoic
1.5 per Liter that can be used up to 50 litres.

×
Ezoic
2.0 per Liter for up to 100 litres.

3.0 per 1 litre for more than 100 litres.

Technologies Used
Java 8+

Swing GUI

NetBeans IDE (or any Java IDE)

here is the full source code : https://www.tutussfunny.com/water-system-calculator-java-swing-gui-example/

Android SQLite Crud Tutorial

Kobinath Ramalingam — Mon, 23 Dec 2024 06:48:51 +0000

This Android tutorial will teach you how to do basic database functions that are CREATE RETIEVE UPDATE and DELETE and SEARCH using SQLite Database. more : https://www.tutussfunny.com/android-sqlite-crud-tutorial/

Student Marks Calculation App in Android Studio

Kobinath Ramalingam — Sat, 21 Dec 2024 14:20:44 +0000

This tutorial will teach you Student Marks Calculation Project in Android Studio step by step. Input Student Name, Marks and Calculate the Total,avg,grade.when you calculate the grade you have to follow the Following Conditions.if the avg is greater than 50 grade will be pass other wise grade will be fail.

More click here

https://www.tutussfunny.com/student-marks-calculation-app-in-android-studio/

Inventory management system using React | Tutusfunny

Kobinath Ramalingam — Fri, 20 Dec 2024 17:24:07 +0000

In today’s fast-paced business environment, an efficient inventory management system is crucial for success. Companies need a reliable way to track stock levels, manage orders, and reduce costs. With the rise of modern front-end frameworks, React offers an innovative solution for developing powerful inventory management systems.

here is complete articles : https://www.tutussfunny.com/

Javascript rest operator

Kobinath Ramalingam — Thu, 02 May 2024 12:51:10 +0000

let person = {
firstname : "Raja",
age : "56",
contact : 983736333
}

console.log(person.firstname)
console.log(person.age)

let a = [1,3,4,5]

console.log(a[3])

//rest operator

let {age,contact, ...rest } = person

console.log(age,contact,rest)