Logging with SLF4J

Logging is important in software development. There are many famous frameworks to be used for logging: Log4j, Logback, java.util.logging… If we wanna change the logging framework without affecting Java code, SLF4J is the good choice.

This tutorial writes about SLF4J with example of how to apply SLF4J in some logging frameworks.

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Maven Introduction – Part 4: Maven Build LifeCycle

Maven build lifeCycle is the central concept of Maven. The sequence of phases which define the order of building and distributing artifact/project is defined with a build lifeCycle.

There are three standard lifeCycles: default, clean and site.
default handles project deployment.
clean handles project cleaning.
site handles the creation of project’s site documentation.

This tutorial will introduce these Maven build lifeCycles, relation between concepts of phases and plugin goals.

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Maven Introduction – Part 3: Maven Dependency Mechanism

Dependency Management is a key feature of Maven. Maven Dependencies are identified by individual artifacts such as libraries or modules. It is not too difficult to manage dependencies for just a single project but, with multi-module projects, there are many things unclear.

This tutorial introduces the Maven Dependency Mechanism by which Maven helps us control them.

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Maven Introduction – Part 1

Maven is a software project management and comprehension tool, an open source project by the Apache community. It can also model a standard structure for Java projects. With Project Object Model (POM) approach, Maven provides a uniform and radical way of understanding and building Java project, reporting and documentation with all its dependencies.

This tutorial will go through quite a few Maven concepts with Eclipse IDE so that we can have a better understanding about its standards.

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Spring Expression Language SpEL

Spring Expression Language (SpEL) is a powerful expression language that supports querying and manipulating an object graph at runtime.

This tutorial shows various examples of ways to use SpEL expressions with XML and annotation based configuration. We also know how to evaluate an expression using SpEL classes and interfaces.

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Spring JPA Hibernate Many to Many – SpringBoot + PostgreSQL

This tutorial will guide you through the steps configuring Many to Many relationship in database with Spring JPA, Spring Boot & PostgreSql.

Related articles:
How to configure Spring JPA One to One Relationship – SpringBoot
How to configure Spring JPA One to Many Relationship – SpringBoot
Spring Data Rest – How to create a RestAPIs with JPA Many-to-Many relational entities | SpringBoot + MySql + HAL Browser

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@Resource Annotation in Spring

@Resource Annotation is used to indicate a reference to a resource, it is considered an alternative to @Autowired which is an Spring standard. Similar to Java EE 5, we can use @Resource Annotation with field injection or setter method.

This tutorial will cover those kinds of injection which will be used for matching by Name, Type or Qualifier.

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Spring MongoOperations to access MongoDB

MongoDB is an open-source NoSQL document database, written using C++. This tutorial will introduce way to use Spring Boot to access MongoDB and perform CRUD operations with Spring MongoOperations.

Related Articles:
How to build SpringBoot MongoDb RestfulApi
How to use SpringData MongoRepository to interact with MongDB
SpringData MongoDB GridFsTemplate to save, retrieve, delete binary files (Image, Text files)
Angular 4 + Spring Boot + MongoDB CRUD example

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Spring ThreadPoolTaskExecutor with Callable interface for concurrency programming

Callable is a Java interface that is an useful methodology for control multi-threading returns on concurrency development.

The tutorial will guide you to build a concurrency program with ThreadPoolTaskExecutor of Spring Framework and Callable interface.

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Java 8 – Method References

Method References make it clear when referring to the existing method by name.

In the article Lambda Expressions and Functional Interfaces, we use lambda expressions to create anonymous methods and sometimes, calling an existing method is the only thing it does.

When using lambda expression without input arguments or those input arguments doesn’t make sense, we can use Method References to simplify the syntax.

This tutorial introduces four kinds of Method References and how to use them efficiently with some Functional Interfaces.

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Java 8 – Functional Interfaces

Functional Interfaces is one of the new important things of Java 8. In previous article, we had a little view about common use cases of Lambda Expression including Runnable and ActionListener. They are example of Functional Interfaces.

This tutorial helps you have deeper concept of Functional Interface, then some interfaces which are provided in java.util.function package such as Predicate and Function.

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Spring Security – Config Security for Web MVC by Spring Boot

Configure Spring Security for Spring MVC web application + SpringBoot

In the tutorial, JavaSampleApproach will show you how to configure Security for SpringMVC web application.

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Java Design Pattern – Abstract Factory Pattern

Abstract factory pattern is a Super-Factory of a group familiar factories. We can use it to expose API for integration code and hidden the logic implementation. Abstract Factory gives us a way to manage and decouple design in case Program has more than one Factory having the same Interface.

The tutorial will guide you a sample for how to program with Abstract Factory Pattern.

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Java Design Pattern – Singleton Pattern

Singleton Pattern is a design pattern which you often meet in almost applications. Singleton Pattern provides a way to instantiate only one instance in an application context.

The tutorial introduces the design of Singleton Design Pattern and give many ways to create a Singleton Pattern in your application.

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