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In this tutorial, we will learn creating a REST API using Spring Boot and MongoDB. We will perform the basic database operations like Create, Read, Update and Delete. So we will create a backend application using Spring boot and...
Print squares of diagonal elements in O(n) time complexity Input: 1 2 3 4 5 6 7 8 9 Output: 1 25 81 9 25 49 public class SquareOfDiagonal { static void printDiagonalSquare(int[][] mat) { int n = mat.length; int...
Find the length of unsorted subarray such that sorting this subarray can sort all the array. Print the start and end index. public class Solution { public static void unsortedArrayIndex(int ar[]) { int i = 0; int...
Given a stack containing n elements reverse the stack with the help of an empty stack. import java.util.Stack; public class StackReversal { public static void reverseStack(Stack<Integer> stack) { if...
In this tutorial, we will be building step by step Javascript Application that connects to Google Firebase and performs the basic CRUD Operations all from scratch. In our previous tutorial, we created the Javascript Recepie...
In this post, we will learn about map a collection of basic type using Hibernate @ElementCollection and @CollectionTable annotation. Learn about developing CRUD application using Spring MVC and Hibernate Imagine the...
Hello everyone, welcome back to my blog. This is the part-2 of the Highcharts and Spring boot series, where we will implement different charts using Highcharts library. If you missed the part-1 then you can check here. In...
In this article, you will learn how to Create Spring MVC and Hibernate Web application with One-to-One mapping. And also you will learn how to integrate Spring MVC and Hibernate with XML Configuration. We will be creating a...
Hello guys, Bushan here welcomes back to B2 Tech. Today in this article will discuss Charts. To draw charts so many libraries, API’s are available but we will be discussing Highcharts in this post and our upcoming...
Hello guys, Bushan here welcomes back to B2 Tech. Today in this post, we will be creating a Recipe App using HTML, CSS, Javascript, jQuery, and Bootstrap. The fully working application is already deployed to the live web server...
Hello guys, Bushan here, welcome to B2 Tech. In this article, we will be Creating fully fledged MVC database web application using JSP and Servlets, we are going to perform basic database operations Create, Read, Update and...
Hey guys, Bushan here, Welcome back to B2 Tech. Today in this article we are going discuss how we can create REST API using Spring boot, hibernate and MySQL. We are going to create End-to-End REST API which is connected to...
Hello guys, Bushan here, Welcome back to B2 Tech. Today in this post, I will show you how to configure/implement Logger using SLF4J in Spring MVC/Java Application. So let’s begin, Tools and Technologies used, JDK...
Hello guys, Bushan here, Welcome back to B2 Tech. If we are creating any kind of web application and having a form in the web application is very very common. In such applications, validating a form fields plays a major role, we...
Hello guys, Bushan here, welcome back to B2 Tech. If you’are creating any kind of application handling exceptions is the most important part because it allows us to run the application smoothly without crashing...
Hello guys, Bushan here, Welcome back to B2 Tech. Today in this article, you will learn how to build a complete CRUD application with Spring Boot, Hibernate, and MySQL. It is not a simple hello world application, it’s a...
Problem Statement: Given 2 String source and target, find the number of occurrences that the String target is present in String source and return the count. Test Cases: public static void main(String[] args)...
Problem Statement: Given a String, Sort the characters in Ascending/Descending from a given String and return the String Test Cases public class SortCharactersInWord { public static void main(String[] args)...
Following are the Patterns asked in many job interviews for both Freshers as well as Experience. Same logic will apply to all the programming languages. Write a Program to Print the following Pattern import...
Hi guys, Bushan here, welcome back to B2 Tech. Today in this article we will discussing about one of the most important sorting technique and also an important Java interview program of all time. Given an integer array, sort...
Hey guys, Bushan here, welcome back to B2 Tech. Today in this article I will show you how to solve another Interview program using Java/C/C++ and Python. So without wasting anymore time let’s begin. Problem Statement:...
Hi guys, Bushan here, Welcome back to B2 Tech! Today in this article I will show you how to make PUT request using Java web service and jQuery Ajax, so let’s get started. In our previous blog post, we have discussed the...
One of the most popular interview question for both freshers as well as experience is this, Pass a string as a parameter. Check whether the given String is Palindrome or not if it is Palindrome then return true otherwise return...
One of the most popular interview question for both freshers as well as experience is this, Pass a string as a parameter. Reverse the string and return it. All the alphabets in the strings should be individually reversed and then...
Hi guys, Bushan here, welcome back to B2 Tech! Today in this video, I will show you how to calculate Age based on Date of birth using jQuery Calendar so let’s get started! If you are creating any kind of registration form...
Hey guys, Bushan here, welcome back to B2 Tech! Today in this article I will show you how to make DELETE request/Delete data using Spring REST and jQuery Ajax, so let’s get started. I have already created the required...
Hi guys, Bushan here, welcome back to B2 Tech! Today in this article I will teach you how to make POST request using jQuery Ajax, so let’s get started! To make POST request, I have already created a Java web service, I will...
