#payilagam Development Tutorials & Tips | Roast Dev

converting default method to program in string

1.small to capital ⛶package String_start; public class small_caps { public static void main(String[] args) { String name = "neelakandan"; for (int i = 0; i < name.length(); i...

10.03.2025 0 Read More

converting default String default method,Primitive to String,reverse name

*Primitive datatype to String-->Strins s==string.vauleof(100)//static medhod. system.out.println(s+100)//output == 100100 *1.contain_method prensent or not ⛶package String_start; public class co...

11.03.2025 0 Read More

Luhn algorithm- credit card,check year/month/date

The Luhn algorithm doesn't have a formula in the conventional mathematical sense. Instead, it's made up of a series of steps.Step 1: Starting from the right, double the value of the second-to-last dig...

12.03.2025 0 Read More

Exception Handling

Exception Handling in JavaThe Exception Handling in Java is one of the powerful mechanism to handle the runtime errors so that the normal flow of the application can be maintained.What is Exception in...

16.03.2025 0 Read More

OOPS - Interview Questions in python

OOPs (Object-Oriented Programming) Interview Questions in Python 1) What is Object-Oriented Programming (OOP)?OOP is a programming paradigm based on the concept of objects, which contain data...

17.03.2025 0 Read More

version controller ,Git & GitLab Day 1

Git & GitLab Day 1Day 1 of my full stack development in java .... Here I am mentioned my doubts and my learnings on my first day....1. Version Control: Centralized vs. DecentralizedCentralized Ver...

19.03.2025 0 Read More

program

Changing order of number ⛶package pratice; public class arr192837 { public static void main(String[] args) { int[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; int[] result = new int[ar...

21.03.2025 0 Read More

🔥 Git Branching Explained: What Happens When You Create Files Before vs. After Switching a Branch? 🚀

Here is the vlog. 🔥 Git Cases for Vlog (Before = Branch First, After = File First) 🔥 📝 Case 1: File Created in main, Then Switch to new-branch (Untracked File) Before: Br...

23.03.2025 0 Read More

Java File Handling Programs

File Handling in JavaIn Java, with the help of File Class, we can work with files. This File Class is inside the** java.io package**. The File class can be used to create an object of the class and th...

23.03.2025 0 Read More

Read Excel and PDF in Java

Read Excel in JavaTo read Excel file in java you need to create Maven project:To create:file--->New-->Maven projectIf You Want to Download JARs ManuallyGo to Maven Repository and search for:1.p...

25.03.2025 0 Read More