Overview RestTemplate reduces boilerplate code and enforces RESTful principles. In this post, we will discuss different ways in which we can use RestTemplate HTTP GET call HTTP POST call HTTP Exchange call HTTP DELETE call GET call Get entry point has two methods getForEntity: returns ResponseEntity which can be used to Read more…
Overview In previous blog, we saw Dependency Injection in Spring using Annotation. Here we will see how we can do the same using Annotation but without defining Autoscan in XML. We will make use of @Configuration and @Bean to define configuration the same as we did for XML in above Read more…
Overview In previous blog we saw Dependency Injection in Spring using XML. Here we will see how we can do same using Annotation Construction Injection using Annotation xml file Paint class Car class Main class Explanation In xml we are telling Spring to look for a package to scan for Read more…
Overview In my previous blog we saw an overview of Spring IoC and DI. Here we will see Dependency Injection (DI) in detail by answering following question: What is DI Ways of injecting Dependency using XML Dependency Injection Dependency Injection (DI) is a design pattern that removes the dependency from Read more…
Overview Spring is a framework for dependency-injection which is a pattern that allows to build very decoupled systems. The Spring Framework is divided into modules. Applications can choose which modules they need. At the heart are the modules of the core container, including a configuration model and a dependency injection Read more…
Overview In this blog, we will cover the following points What is Reflection API? Using private methods Using private fields Sample Code Reflection API Reflection allows instantiation of new objects, invocation of methods, and get/set operations on class variables dynamically at run time without having prior knowledge of its implementation. Read more…
Overview In this blog, we will cover What is JAX-RS JAX-RS Specification Implementation provider for JAX-RS Why follow JAX-RS What is JAX-RS JAX-RS: Java API for RESTful Web Services (JAX-RS) is a Java programming language API spec that provides support in creating web services according to the Representational State Transfer (REST) Read more…
Overview In this blog, we will cover the following points What is JVM, JRE & JDK Steps to run a java file JVM (Java Virtual machine) JVM is responsible for converting Byte code to the machine-specific code. JVM is also platform-dependent and provides core java functions like memory management, garbage Read more…
This blog will cover What is APM Glowroot – Overview Configuration – Embedded Collector Persistence Option with Docker – Central Collector What is APM? In a production environment, it’s important to keep an eye on resource consumption. This is where various monitoring tools come in. When it comes to Java Read more…
We will cover how to use Gson to convert JSON into Java Object and Java Object into JSON in the following points Overview Use Gson – Maven/Gradle Object to JSON JSON to Object TypeToken Custom variables naming JSON with HTML content JSON in Readable format Fields from JSON Include Null Read more…