Java Generate UUID
1. Overview In this article, We will discuss how to generate UUID in Java. We will discuss different ways to generate random UUID, Time-based UUID, and Name-based UUID. Full Form of…
Nodejs download file example
1. Overview In this article, we will learn how to download file in NodeJs with example . There are several ways to download files. Download File In http Server Using…
Java sort using Comparator example
Overview In Java 8, some new comparison utility methods are added in the Comparator interface which returns the behavior of Comparator. those methods can be used with lambda expression or…
Java Stream of Multiple Lists
Overview In Java 8, we know how to get a stream of List using stream() or parrallelStream() method of Collection interface. But what if we want a stream of two…
Java stream filter null values
Overview Java List and Map may contain null values (elements). And sometimes we need to filter those null elements to avoid NullPointerException before going to process it using stream API….
Spring Jackson exclude null fields
1. Overview This article is about Spring Jackson exclude null fields or we can say Spring Jackson ignore the null value at the time of serialization. While using RestController in Spring…
NodeJS change server port
1. Overview In this article, we will learn how to change node.jsserver port. We will explore the different techniques to change the port. By Setting The environment variable. Using the configuration file….
Spring boot JPA Multi Tenancy example
1. Overview In this article, We will learn Spring JPA Multi Tenancy example or Spring JPA database routing Example. While developing SAAS (Software As A Service) based application we require to change…
Spring MVC Read HTTP Request header
1. Overview This article is about Spring MVC read HTTP Request header in Spring boot Rest Service or Spring MVC Controller. @RequestHeader is a annotation using that we can read individual healer or…
NodeJS JSON Web Service Example
1. Overview In this article, we will learn how to develop JSON web services in node js along with JSON data. we will see the specific example for insert, update…