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Java Collections - HashMap Cheat-Sheet

Gaurav Dixit (Software Engineer) January 27, 2025 Map

import java.util.HashMap; public class HashMapDemo { public static void main(String[] args) { //create a HashMap HashMap ma…

Version-Wise list of Java features and syntax updates

Gaurav Dixit (Software Engineer) January 22, 2025 java interview questions

Below is a version-wise list of Java features and syntax updates : Java 1.0 (1996) Initial Release Key Features: Object-Oriented Programming (…

Classes in OOPs

Gaurav Dixit (Software Engineer) November 29, 2021 python

Classes Look at the world around you. It is full of objects of various shapes, colors, and behaviors. Based on these characterstics, these object…

Object in OOPs

Gaurav Dixit (Software Engineer) November 19, 2021 python

Objects An object means a thing that can be presented physically. In other words, an object is a touchable entity that may show some well defin…

Object Oriented Programmings Concept (OOPs)

Gaurav Dixit (Software Engineer) November 16, 2021 python

Object Oriented Concept (OOPs) One way of reducing the complexicity is to use the concept of Object Orientation . Defining Object Orientation Objec…

Java-Binary to Decimal

Gaurav Dixit (Software Engineer) May 29, 2021 java program

Java Program Binary to Decimal program //Enter a binary number or it would show an error message import java.util.Scanner; public class Program …

Java Program to print the following pattern

Gaurav Dixit (Software Engineer) January 10, 2019 java pattern

Java Program to print the following pattern: 1 21 321 4321 54321 public class aa { public static void main(String args[]) {…

Java Program to print n terms of series 1, (1+2),(1+2+3), .....

Gaurav Dixit (Software Engineer) December 17, 2018 java

Sum of the series 1 + (1+2) + (1+2+3) + (1+2+3+4) + …… + (1+2+3+4+…+n) Given the value of n, we need to find the sum of the series where i-th term is…

Java Program to swap first & Last digit of a number example-5643, output-3645

Gaurav Dixit (Software Engineer) December 17, 2018 java

// Java program to swap first & Last digit of a number example-5643, output-3645 import java.util.Scanner; class SwapFirstAndLastDigit { public s…

Manipulating an Access database from Java without ODBC

Gaurav Dixit (Software Engineer) October 19, 2018 jdbc

Manipulating an Access database from Java without ODBC If You want to manipulate a Microsoft Access database (.accdb or .mdb file) from my Java proje…