This guide covers an overview of Java Persistence API (JPA). Why it was created, what are the highlights, and what are the major parts. Learn Entity, EntityManager, JPQL and Criteria.
A guide to Spring Data JPA find by @EmbeddedId Partially. Use Spring data JPA to find by partial composite primary key with code examples.
Guide to learn Spring Data JPA Composite Key with @EmbeddedId. Learn what is Primary Key and Composite Primary Key, and how Spring Data JPA supports it.
A guide for Accessing data using Spring Data JPA abstraction. We will use real database and Spring Data JPA for creating table and accessing data.
Lean about the ways of handling exception in Spring Boot Web Service. Read for through examples and detailed description of the concepts
Tutorial on developing first Spring Boot Rest Service example. See how quickly you can start your own RESTful service with the help of Spring Boot.
In this series of Scala Tutorials, we are looking at Scala constructors. See how the default, custom, primary and auxiliary constructors work in Scala.
This article focuses on Scala language functions. It describes how functions are written and used in Scala.
Introduction to Scala Language is a first part of series of Scala Language Tutorials. This post describes what is Scala language, the basic features and coding constructs.
Spring Boot Multiple Mongo Templates describes way to inject more than one mongo templates or any other objects created by auto configuration.
Java 8 Streams – Terminal Operations describes Java 8 streams Matching, Finding, Reducing, and Optional with detailed examples
Java 8 Streams Intermediate Operations like map, flatMap, filter, sorting and limit are explained in detailed with simple examples
This Java 8 tutorial describes how lazy streams helps improve performance. Understand Java 8 Streams performance optimisation and short circuit methods.
This article helps Understanding Java 8 Streams API. Learn what are streams, how different they are from Collections, stream operations, behaviours with simple examples
Java 8 Date and Time API is modified. Learn about what has changed and how better it is compared to old API or Joda Time API. Explained in detailed with examples.
Before we learn Java 8 Date and Time API, let’s have a looks at what is Joda Time API and how it is different than old date and time API. This will help us understand how better Java Date and Time API is.
Before diving deeper into Java 8 Date and Time API, let’s first understand existing Date and Time API. See the main features and examples of Date and Time API.
Java Preferences API is quite old and not so famous feature in Java. Learn about how Java Preferences API helps storing User or System preferences with the help of detailed examples.
A guide to Java 8 Collections API enhancements. Learn about the changes like streams, new methods with the help of code examples.
Java 8 has exciting features like Closures, and Lambda Expressions. In this article we will look deeper into what is a Lambda expression and how Java supports it.
Learn about Java Fork Join Framework, how it works, what is Work Stealing Algorithm, how it makes use of multi-core capabilities and how parallelism is different than concurrency.
Learn about Servlet 3.0 features like web-fragments, asynchronous request processing, annotations with detailed description and examples