First and Second Level Cache in Hibernate: If you have used Hibernate in past then you know that one of the strongest points of the Hibernate framework is caching, which can drastically improve the performance of Java application’s persistence layer if configured and used correctly. Hibernate provides caching at many…

Spring Profiles provide a way to segregate parts of your application configuration and make it only available in certain environments like Prod, Dev and QA and any class having @Component or @Configuration can be marked with @Profile Lets create a spring boot sample projects to demonstrate profiles in spring framework…Here…

Spring Boot provides a very good support to building RESTful Web Services for enterprise applications. In this post we will create simple RESTful web services using Spring Boot. For building a RESTful Web Services, we need to add the Spring Boot Starter Web dependency into the pom.xml file. <dependency> <groupId>org.springframework.boot</groupId>…

What is Cloud Computing? Have you ever wondered what cloud computing is? It’s the delivery of computing services over the internet, which is otherwise known as the cloud. These services include servers, storage, databases, networking, software, analytics, and intelligence. Cloud computing offers faster innovation, flexible resources, and economies of scale. Why is cloud computing…

An API(Application Programming Interface) represents a group of classes and interfaces using which a programmer can develop applications or software, In Java 8, a new package java.util.stream has been provided for creating and working with streams, We know that a stream represents flow of data from one place to another…

The Math class is present in java.lang package, this is a final class and all the methods present in Math class are static so we need not create an object to Math class to call them, public final class Math extends Object{} The Math class contains methods for performing basic…

We write a method in the form of sum(int a, int b), since the method has only two parameters, so we can pass only two values or two arguments to this method, it is not possible to pass more than two values to this method sum() Suppose we want to…

pom.xml : Maven is Dependency management and build tool used to handle both stand alone and Archetype (web, restful) applications. Dependency Management: Getting main Jars and its child jars with version support (without conflicts) into project workspace is called as Dependency Management. Build: Converting our application into final JAVA executable format i.e .jar/.war/.ear…

A Runner is an auto-executable component which is called by container on application startup only once, In simple this concept is used to execute any logic (code) one time when application is started, Spring Boot provides two interfaces, CommandLineRunner and ApplicationRunner, to run specific pieces of code when an application…