Must Know Java Technologies for recent Java Positions

What is Spring Boot?

“Spring Boot is a brand new framework from the team at Pivotal, designed to simplify the bootstrapping and development of a new Spring application. The framework takes an opinionated approach to configuration, freeing developers from the need to define boilerplate configuration.Mar 18, 2014
Exploring Micro-frameworks: Spring Boot — InfoQ”

https://www.infoq.com/articles/microframeworks1-spring-boot

What is a spring application?

“The Spring Framework is an application framework and inversion of control container for the Java platform. The framework’s core features can be used by any Java application, but there are extensions for building web applications on top of the Java EE platform.
Spring Framework — Wikipedia”

https://en.wikipedia.org/wiki/Spring_Framework

What is spring boot CLI?

“The Spring Boot CLI is a command line tool that can be used if you want to quickly prototype with Spring. It allows you to run Groovy scripts, which means that you have a familiar Java-like syntax, without so much boilerplate code.”

10. Installing Spring Boot
https://docs.spring.io/spring-boot/docs/.../getting-started-installing-spring-boot.html

What is spring boot actuator?

“Spring Boot Actuator includes a number of additional features to help you monitor and manage your application when it’s pushed to production. You can choose to manage and monitor your application using HTTP endpoints, with JMX or even by remote shell (SSH or Telnet).
spring-boot/spring-boot-actuator at master · spring-projects/spring …”

https://github.com/spring-projects/spring-boot/tree/master/spring-boot-actuator

What is spring cloud?

“Spring Cloud is a collection of tools from Pivotal that provides solutions to some of the commonly encountered patterns when building distributed systems.Jul 13, 2015
Building Microservices with Spring Cloud and Docker — Kenny Bastani”

www.kennybastani.com/2015/07/spring-cloud-docker-microservices.html

What are all the modules in spring?
“The Spring framework comprises of many modules such as core, beans, context, expression language, AOP, Aspects, Instrumentation, JDBC, ORM, OXM, JMS, Transaction, Web, Servlet, Struts etc.”
Spring Modules Tutorial — javatpoint
https://www.javatpoint.com/spring-modules

What is Springboot?
Spring Boot is a brand new framework from the team at Pivotal, designed to simplify the bootstrapping and development of a new Spring application. The framework takes an opinionated approach to configuration, freeing developers from the need to define boilerplate configuration.Mar 18, 2014
Exploring Micro-frameworks: Spring Boot — InfoQ
https://www.infoq.com/articles/microframeworks1-spring-boot

What is Spring Tool Suite?

“The Spring Tool Suite is an Eclipse-based development environment that is customized for developing Spring applications. … Included with the Spring Tool Suite is the developer edition of Pivotal tc Server, the drop-in replacement for Apache Tomcat that’s optimized for Spring.”

Spring Tool Suite™ (STS)
https://spring.io/tools/sts

What is the use of Spring Roo?

“Spring Roo is an open source software tool that uses convention-over-configuration principles to provide rapid application development of Java-based enterprise software. The resulting applications use common Java technologies such as Spring Framework, Java Persistence API, Thymeleaf, Apache Maven and AspectJ.”

Spring Roo — Wikipedia
https://en.wikipedia.org/wiki/Spring_Roo

What is a spring batch?

“Spring Batch is an open source framework for batch processing. It is a lightweight, comprehensive solution designed to enable the development of robust batch applications, which are often found in modern enterprise systems. Spring Batch builds upon the POJO-based development approach of the Spring Framework.
Spring Batch — Wikipedia”

https://en.wikipedia.org/wiki/Spring_Batch

What is Thymeleaf?

“Thymeleaf is a Java XML/XHTML/HTML5 template engine that can work both in web (Servlet-based) and non-web environments. It is better suited for serving XHTML/HTML5 at the view layer of MVC-based web applications, but it can process any XML file even in offline environments.
Thymeleaf — Wikipedia”

https://en.wikipedia.org/wiki/Thymeleaf

What are the Spring architecture?

“The Spring framework is a layered architecture which consists of several modules. All modules are built on the top of its core container. … The Core Module: Provides the Dependency Injection (DI) feature which is the basic concept of the Spring framework.
Spring Framework Architecture — DZone Java”

https://dzone.com/articles/spring-framework-architecture

What is Aspect Oriented Programming in spring?

“Aspect-Oriented Programming (AOP) complements Object-Oriented Programming (OOP) by providing another way of thinking about program structure. The key unit of modularity in OOP is the class, whereas in AOP the unit of modularity is the aspect. … One of the key components of Spring is the AOP framework.”

11. Aspect Oriented Programming with Spring
https://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop.html

What is spring boot in Java?

“Spring Boot ships with a small command line application that can be used to run ‘spring scripts’. Spring scripts are written in Groovy, which means that you have a familiar Java-like syntax, without so much boilerplate code.Aug 6, 2013
Spring Boot — Simplifying Spring for Everyone”

https://spring.io/blog/2013/08/06/spring-boot-simplifying-spring-for-everyone

What is JPA in spring?

“Spring Data JPA. Spring Data JPA, part of the larger Spring Data family, makes it easy to easily implement JPA based repositories. … It makes it easier to build Spring-powered applications that use data access technologies. Implementing a data access layer of an application has been cumbersome for quite a while.”

Spring Data JPA — Projects
projects.spring.io/spring-data-jpa/

What is Spring IDE?

“Spring IDE is a set of plugins which are adding support for the popular application framework Spring Framework to the Eclipse platform. Features: Project nature which adds support of Spring projects. Incremental builders validating Spring bean config files.Jul 25, 2005
Spring IDE | Eclipse Plugins, Bundles and Products — Eclipse …”

https://marketplace.eclipse.org/content/spring-ide

What is pivotal tc Server?

“Pivotal tc Server provides companies with a secure, supported, and extended Java application server based on and fully-compatible with Apache Tomcat. … It also provides real-time insight into the performance and behavior of Spring applications.”

Download Pivotal tc Server — Pivotal Network
https://network.pivotal.io/products/pivotal-tcserver

AppFuse is an open-source Java EE web application framework. It is designed for quick and easy start up of development, while also using open-source Java technologies such as Spring Framework, Hibernate and Struts.
AppFuse — Wikipedia
https://en.wikipedia.org/wiki/AppFuse

What is Web flow in spring?
Web application framework. License. Apache License 2.0. Website. … Spring Web Flow (SWF) is the sub-project of the Spring Framework that focuses on providing the infrastructure for building and running rich web applications.
Spring Web Flow — Wikipedia
https://en.wikipedia.org/wiki/Spring_Web_Flow

What is a batch job in Java?
A job encapsulates the entire batch process. A job contains one or more steps. A job is put together using a Job Specification Language (JSL) that specifies the sequence in which the steps must be executed. In JSR 352, JSL is specified in an XML file called the job XML file.
An Overview of Batch Processing in Java EE 7.0 — Oracle
www.oracle.com/technetwork/articles/java/batch-1965499.html

What is Apache tiles?
Apache Tiles is a template composition framework. Tiles was originally built to simplify the development of web application user interfaces, but it is no longer restricted to the JavaEE web environment. Tiles allows authors to define page fragments which can be assembled into a complete page at runtime.
Apache Tiles — Framework — Home
https://tiles.apache.org/framework/

What is ZUUL server?
A common challenge when building microservices is providing a unified interface to the consumers of your system. … To solve this problem, Netflix (a major adopter of microservices) created and open-sourced its Zuul proxy server. Zuul is an edge service that proxies requests to multiple backing services.Mar 2, 2016
Using Netflix Zuul to Proxy your Microservices | Heroku
https://blog.heroku.com/using_netflix_zuul_to_proxy_your_microservices

What is Spring MVC architecture?
Advertisements. The Spring Web MVC framework provides Model-View-Controller (MVC) architecture and ready components that can be used to develop flexible and loosely coupled web applications.
Spring MVC Framework — TutorialsPoint
https://www.tutorialspoint.com/spring/spring_web_mvc_framework.htm

What is the Spring framework used for?
Spring Framework can be used in developing any Java application, but there are extensions for building web applications on top of the Java EE platform. Spring framework targets to make J2EE development easier to use and promote good programming practice by enabling a POJO-based programming model.
What is Spring Framework used for? — Quora
https://www.quora.com/What-is-Spring-Framework-used-for

What is Java AOP?
Aspect Oriented Programming (AOP) compliments OOPs in the sense that it also provides modularity. But the key unit of modularity is aspect than class. AOP breaks the program logic into distinct parts (called concerns). It is used to increase modularity by cross-cutting concerns.
Spring AOP Tutorial | Aspect Oriented Programming — javatpoint
www.javatpoint.com/spring-aop-tutorial

What is meant by AOP?
Aspect-oriented programming (AOP) is an approach to programming that allows global properties of a program to determine how it is compiled into an executable program. AOP can be used with object-oriented programming ( OOP ). An aspect is a subprogram that is associated with a specific property of a program.
What is aspect-oriented programming (AOP)? — Definition from WhatIs …
whatis.techtarget.com/definition/aspect-oriented-programming-AOP

What is meant by hibernate in Java?
Hibernate ORM (Hibernate in short) is an object-relational mapping tool for the Java programming language. It provides a framework for mapping an object-oriented domain model to a relational database. … Hibernate also provides data query and retrieval facilities.
Hibernate (framework) — Wikipedia
https://en.wikipedia.org/wiki/Hibernate_(framework)

What is a Struts framework in Java?
Struts is an open source framework that extends the Java Servlet API and employs a Model, View, Controller (MVC) architecture. It enables you to create maintainable, extensible, and flexible web applications based on standard technologies, such as JSP pages, JavaBeans, resource bundles, and XML.
Introduction to the Struts Web Framework — NetBeans IDE Tutorial
https://netbeans.org/kb/docs/web/quickstart-webapps-struts.html

What is a repository in spring?
The @Repository annotation is a marker for any class that fulfills the role or stereotype of a repository (also known as Data Access Object or DAO). … Spring provides further stereotype annotations: @Component, @Service, and @Controller. @Component is a generic stereotype for any Spring-managed component.Jul 26, 2011
java — What’s the difference between @Component, @Repository …
stackoverflow.com/…/whats-the-difference-between-component-repository-service-anno…

What is the JPA in Java?
The Java Persistence API (JPA) is a Java specification for accessing, persisting, and managing data between Java objects / classes and a relational database. JPA was defined as part of the EJB 3.0 specification as a replacement for the EJB 2 CMP Entity Beans specification.
Java Persistence/What is JPA? — Wikibooks, open books for an open …
https://en.wikibooks.org/wiki/Java_Persistence/What_is_JPA%3F

What is spark in software?
Spark is a free and open-source software web application framework and domain-specific language written in Java. It is an alternative to other Java web application frameworks such as JAX-RS, Play framework and Spring MVC.
Spark (software) — Wikipedia
https://en.wikipedia.org/wiki/Spark_(software)

What is Spring Web services?
Spring Web Services (Spring-WS) is a product of the Spring community focused on creating document-driven Web services. Spring Web Services aims to facilitate contract-first SOAP service development, allowing for the creation of flexible web services using one of the many ways to manipulate XML payloads.
Chapter 1. What is Spring Web Services?
docs.spring.io/spring-ws/site/reference/html/what-is-spring-ws.html

What is Handler mapping in spring?
When no handler mapping is explicitly specified in configuation, BeanNameUrlHandlerMapping is created and used by default. From the article you linked: “By default the DispatcherServlet uses the BeanNameUrlHandlerMapping to map the incoming request. The BeanNameUrlHandlerMapping uses the bean name as the URL pattern.Dec 27, 2011
java — Which is a Controller and which is HandlerMapping in Spring …
stackoverflow.com/…/which-is-a-controller-and-which-is-handlermapping-in-spring-mv…

What is the Spring framework?
The Spring Framework is an application framework and inversion of control container for the Java platform. The framework’s core features can be used by any Java application, but there are extensions for building web applications on top of the Java EE platform. … The Spring Framework is open source.
Spring Framework — Wikipedia
https://en.wikipedia.org/wiki/Spring_Framework

What are the technologies in Java?
Contents
1 At a glance.
2 Servlet API.
3 JavaServer Pages (JSP)
4 Apache Struts.
5 Apache Tapestry.
6 Apache Wicket.
7 JavaServer Faces (JSF) and Facelets.
8 SiteMesh.
More items…
Java view technologies and frameworks — Wikipedia
https://en.wikipedia.org/wiki/Java_view_technologies_and_frameworks

What is service registry in Web service?
Optionally, a provider can explicitly register a service with a Web Services Registry such as Universal Description Discovery and Integration (UDDI) or publish additional documents intended to facilitate discovery such as Web Services Inspection Language (WSIL) documents.
Web Services Discovery — Wikipedia
https://en.wikipedia.org/wiki/Web_Services_Discovery

What is the use of Spring MVC?
12 BENEFITS OF SPRING MVC OVER STRUTS. Spring is a powerful Java application framework, used in a wide range of Java applications. It provides enterprise services to Plain Old Java Objects (POJOs). Spring uses dependency injection to achieve simplification and increase testability.Sep 26, 2014
Why springMVC still is the most powerful java framework | Pranshu …
https://www.linkedin.com/.../20140926234011-126870701-why-springmvc-still-is-the-...

What is the use of DispatcherServlet in spring?
Front controller is a typical design pattern in the web applications development. In this case, a single servlet receives all requests and transfers them to to all other components of the application. The task of the DispatcherServlet is send request to the specific Spring MVC controller.May 4, 2010
java — What is Dispatcher Servlet in Spring? — Stack Overflow
stackoverflow.com/questions/2769467/what-is-dispatcher-servlet-in-spring

What is spring and hibernate?
Hibernate is a persistence framework and is used to persist Java objects in a relational database. Spring can be used to wire all this together and to provide declarative transaction management.May 15, 2010
java — What is the difference between Spring, Struts, Hibernate …
stackoverflow.com/…/what-is-the-difference-between-spring-struts-hibernate-javaserver-…

What is the use of Spring Framework?
For what it (the core-framework) is most known for is it’s capabilities in the field of dependency injection. Spring itself has, what is called Inversion of control container or short IoC Container or even shorter the container (for which “spring” is sometimes used synonymous).Jul 12, 2011
java — What does the Spring framework do? Should I use it? Why or …
https://softwareengineering.stackexchange.com/.../what-does-the-spring-framework-do-s...

What is AOP in spring?
Aspect-Oriented Programming (AOP) complements Object-Oriented Programming (OOP) by providing another way of thinking about program structure. The key unit of modularity in OOP is the class, whereas in AOP the unit of modularity is the aspect. … One of the key components of Spring is the AOP framework.
11. Aspect Oriented Programming with Spring
https://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop.html

What is a cross cutting concern?
The crosscutting concern is a concern which is applicable throughout the application and it affects the entire application. For example: logging, security and data transfer are the concerns which are needed in almost every module of an application, hence they are cross-cutting concerns.May 16, 2014
design patterns — Cross cutting concern example — Stack Overflow
stackoverflow.com/questions/23700540/cross-cutting-concern-example

What is spring boot in Java?
Spring Boot ships with a small command line application that can be used to run ‘spring scripts’. Spring scripts are written in Groovy, which means that you have a familiar Java-like syntax, without so much boilerplate code.Aug 6, 2013
Spring Boot — Simplifying Spring for Everyone
https://spring.io/blog/2013/08/06/spring-boot-simplifying-spring-for-everyone

What is spring boot CLI?
The Spring Boot CLI is a command line tool that can be used if you want to quickly prototype with Spring. It allows you to run Groovy scripts, which means that you have a familiar Java-like syntax, without so much boilerplate code.
10. Installing Spring Boot
https://docs.spring.io/spring-boot/docs/.../getting-started-installing-spring-boot.html

Why we are going to hibernate?
Hibernate or JPA (EJB3) are appropriate if you’re mapping from a relational database onto Java objects. It does imply a fair amount of overhead. That overhead can be controlled by using it appropriately and reducing result sets in particular to just object properties to avoid the creation of entire data objects.
Why hibernate over JDBC? — Quora
https://www.quora.com/Why-hibernate-over-JDBC

What is meant by ORM in Java?
ORM allows you to use java objects as representation of a relational database. It maps the two concepts (object-oriented and relational) Hibernate is an ORM framework — you describe how your objects are represented in your database, and hibernate handles the conversion.Aug 15, 2011
java — What is Object/relational mapping(ORM) in relation to Hibernate …
stackoverflow.com/…/what-is-object-relational-mappingorm-in-relation-to-hibernate-an…

What is Apache Struts?
Apache License 2.0. … struts.apache.org. Apache Struts 2 is an open-source web application framework for developing Java EE web applications. It uses and extends the Java Servlet API to encourage developers to adopt a model–view–controller (MVC) architecture.
Apache Struts 2 — Wikipedia
https://en.wikipedia.org/wiki/Apache_Struts_2

What is meant by struts in Java?
Struts is the most popular framework for developing Java based web applications. Struts is being developed as an open source project started by Apache Software Foundation . Struts framework is based on Model View Controller (MVC) architecture.
Java Programming/Struts — Wikibooks, open books for an open world
https://en.wikibooks.org/wiki/Java_Programming/Struts

What is service in spring?
Spring @Component, @Service, @Repository and @Controller annotations are used for automatic bean detection using classpath scan in Spring framework. @Component is a generic annotation.Oct 30, 2013
Spring @Component, @Service, @Repository, @Controller Difference …
javapapers.com/spring/spring-component-service-repository-controller-difference/

What is meant by Bean in spring?
A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container. These beans are created with the configuration metadata that you supply to the container. For example, in the form of XML definitions which you have already seen in the previous chapters.
Spring Bean Definition — TutorialsPoint
https://www.tutorialspoint.com/spring/spring_bean_definition.htm

What is an entity in JPA?
A JPA entity class is a POJO (Plain Old Java Object) class, i.e. an ordinary Java class that is marked (annotated) as having the ability to represent objects in the database. Conceptually this is similar to serializable classes, which are marked as having the ability to be serialized.
How to define a JPA Entity Java Class — ObjectDB
www.objectdb.com/java/jpa/start/entity

What is a JPA project?
An EJB project is a project focused on the development of Enterprise Java Beans. Commonly, EJBs depend on Entitity Beans for persistency which are implemented using the JPA technology (think of JPA as a dependency of the EJB).May 5, 2011
java — What is difference between JPA Project and EJB Project in …
stackoverflow.com/…/what-is-difference-between-jpa-project-and-ejb-project-in-eclipse

What is spark for?
Spark is an open source processing engine built around speed, ease of use, and analytics. If you have large amounts of data that requires low latency processing that a typical MapReduce program cannot provide, Spark is the way to go.
What Is Spark? Find out with Our Free Spark Course
https://bigdatauniversity.com/courses/what-is-spark/

What is spark wiki?
Apache Spark is a engine for large-scale data processing. It is optimized for the execution of multiple parallel operations on the same data set as they occur in many iterative machine learning tasks.Aug 12, 2014
Big Data/Spark — Wikiversity
https://en.wikiversity.org/wiki/Big_Data/Spark

What is the play framework?
Play Framework makes it easy to build web applications with Java & Scala. Play is based on a lightweight, stateless, web-friendly architecture. Built on Akka, Play provides predictable and minimal resource consumption (CPU, memory, threads) for highly-scalable applications.
Play Framework — Build Modern & Scalable Web Apps with Java and …
https://www.playframework.com/

What is REST vs SOAP?
Web services are of two kinds: Simple Object Access Protocol (SOAP) and Representational State Transfer (REST). SOAP defines a standard communication protocol (set of rules) specification for XML-based message exchange. SOAP uses different transport protocols, such as HTTP and SMTP.Nov 7, 2016
REST vs. SOAP: Choosing the best web service — SearchMicroservices
searchmicroservices.techtarget.com/tip/REST-vs-SOAP-Choosing-the-best-web-service

What is SOAP request and response?
SOAP is an XML-based messaging protocol. It defines a set of rules for structuring messages that can be used for simple one-way messaging but is particularly useful for performing RPC-style (Remote Procedure Call) request-response dialogues. It is not tied to any particular transport protocol though HTTP is popular.
SOAP Basics 1 : What is SOAP? — Soapuser.com
www.soapuser.com/basics1.html

What is model attribute in spring?
@ModelAttribute refers to a property of the Model object (the M in MVC ;) so let’s say we have a form with a form backing object that is called “Person” Then you can have Spring MVC supply this object to a Controller method by using the @ModelAttribute annotation: public String processForm(@ModelAttribute(“person”) …Aug 6, 2010
java — What is @ModelAttribute in Spring MVC? — Stack Overflow
stackoverflow.com/questions/3423262/what-is-modelattribute-in-spring-mvc

What is the best technology to learn?
I would say:
Go.
Java 8.
Scala.
JavaScript, Node.js, ES6.
NoSQL.
Hadoop, Hive.
R.
Docker.
More items…
What technologies should one learn to stay ahead in the IT industry for …
https://www.quora.com/What-technologies-should-one-learn-to-stay-ahead-in-the-IT-in...

Is JSP is a framework?
It’s a persistence layer framework and it doesn’t have anything to do with Servlets and JSPs. Servlet API is the lowest level for almost all Java web frameworks. Even JSPs are compiled to servlets. Spring MVC is a layer on top of Servlet API with lots of helpful extensions and integration with Spring Core.Sep 6, 2012
web development — Do I need to know servlets and JSP to learn spring …
https://softwareengineering.stackexchange.com/.../do-i-need-to-know-servlets-and-jsp-to...

What is UDDI and how to register the Web service in it?
UDDI stands for Universal Description, Discovery, and Integration. UDDI is a specification for a distributed registry of web services. UDDI can communicate via SOAP, CORBA, Java RMI Protocol. UDDI uses Web Service Definition Language(WSDL) to describe interfaces to web services.
UDDI Overview — TutorialsPoint
https://www.tutorialspoint.com/uddi/uddi_overview.htm

What is a Web service architecture?
Web Services — Architecture. Advertisements. There are two ways to view the web service architecture: The first is to examine the individual roles of each web service actor. The second is to examine the emerging web service protocol stack.
Web Services Architecture — TutorialsPoint
https://www.tutorialspoint.com/webservices/web_services_architecture.htm

What is Handler mapping in spring?
When no handler mapping is explicitly specified in configuation, BeanNameUrlHandlerMapping is created and used by default. From the article you linked: “By default the DispatcherServlet uses the BeanNameUrlHandlerMapping to map the incoming request. The BeanNameUrlHandlerMapping uses the bean name as the URL pattern.Dec 27, 2011
java — Which is a Controller and which is HandlerMapping in Spring …
stackoverflow.com/…/which-is-a-controller-and-which-is-handlermapping-in-spring-mv…

What is Spring Web?
Web application framework. License. Apache License 2.0. … Spring Web Flow (SWF) is the sub-project of the Spring Framework that focuses on providing the infrastructure for building and running rich web applications.
Spring Web Flow — Wikipedia
https://en.wikipedia.org/wiki/Spring_Web_Flow

When was Spring framework introduced?
Version history. The first version was written by Rod Johnson, who released the framework with the publication of his book Expert One-on-One J2EE Design and Development in October 2002. The framework was first released under the Apache 2.0 license in June 2003.
Spring Framework — Wikipedia
https://en.wikipedia.org/wiki/Spring_Framework

What is meant by dependency injection in Spring?
Dependency injection (DI) is a process whereby objects define their dependencies, that is, the other objects they work with, only through constructor arguments, arguments to a factory method, or properties that are set on the object instance after it is constructed or returned from a factory method.
7. The IoC container — Spring
https://docs.spring.io/spring/docs/current/spring-framework-reference/html/beans.html

What is Java AOP?
Aspect Oriented Programming (AOP) compliments OOPs in the sense that it also provides modularity. But the key unit of modularity is aspect than class. AOP breaks the program logic into distinct parts (called concerns). It is used to increase modularity by cross-cutting concerns.
Spring AOP Tutorial | Aspect Oriented Programming — javatpoint
www.javatpoint.com/spring-aop-tutorial

What is Aspect Oriented Programming?
Aspect-oriented programming (AOP) is an approach to programming that allows global properties of a program to determine how it is compiled into an executable program. AOP can be used with object-oriented programming ( OOP ). An aspect is a subprogram that is associated with a specific property of a program.
What is aspect-oriented programming (AOP)? — Definition from WhatIs …
whatis.techtarget.com/definition/aspect-oriented-programming-AOP

What is spring boot actuator?
Spring Boot Actuator includes a number of additional features to help you monitor and manage your application when it’s pushed to production. You can choose to manage and monitor your application using HTTP endpoints, with JMX or even by remote shell (SSH or Telnet).
spring-boot/spring-boot-actuator at master · spring-projects/spring …
https://github.com/spring-projects/spring-boot/tree/master/spring-boot-actuator

What is spring cloud?
Spring Cloud is a collection of tools from Pivotal that provides solutions to some of the commonly encountered patterns when building distributed systems.Jul 13, 2015
Building Microservices with Spring Cloud and Docker — Kenny Bastani
www.kennybastani.com/2015/07/spring-cloud-docker-microservices.html

What is Spring Tool Suite?
The Spring Tool Suite is an Eclipse-based development environment that is customized for developing Spring applications. … Included with the Spring Tool Suite is the developer edition of Pivotal tc Server, the drop-in replacement for Apache Tomcat that’s optimized for Spring.
Spring Tool Suite™ (STS)
https://spring.io/tools/sts

What is the use of Spring Roo?
Spring Roo is an open source software tool that uses convention-over-configuration principles to provide rapid application development of Java-based enterprise software. The resulting applications use common Java technologies such as Spring Framework, Java Persistence API, Thymeleaf, Apache Maven and AspectJ.
Spring Roo — Wikipedia
https://en.wikipedia.org/wiki/Spring_Roo

What is Struts 2 framework in Java?
Apache Struts 2 is an elegant, extensible framework for creating enterprise-ready Java web applications. The framework is designed to streamline the full development cycle, from building, to deploying, to maintaining applications over time. Apache Struts 2 was originally known as WebWork 2.
Struts 2 Tutorial
https://www.tutorialspoint.com/struts_2/

Is Struts MVC framework?
Apache Struts is a free, open-source, MVC framework for creating elegant, modern Java web applications. It favors convention over configuration, is extensible using a plugin architecture, and ships with plugins to support REST, AJAX and JSON.
Welcome to the Apache Struts project
https://struts.apache.org/

What is Apache Struts?
Apache License 2.0. … struts.apache.org. Apache Struts 2 is an open-source web application framework for developing Java EE web applications. It uses and extends the Java Servlet API to encourage developers to adopt a model–view–controller (MVC) architecture.
Apache Struts 2 — Wikipedia
https://en.wikipedia.org/wiki/Apache_Struts_2

What is Spring Hibernate and Struts in Java?
So, to summarize: Struts 2, JSF, Tapestry (and Wicket, Spring MVC, Stripes) are presentation frameworks. … Hibernate is a persistence framework and is used to persist Java objects in a relational database. Spring can be used to wire all this together and to provide declarative transaction management.May 15, 2010
java — What is the difference between Spring, Struts, Hibernate …
stackoverflow.com/…/what-is-the-difference-between-spring-struts-hibernate-javaserver-…

What is meant by Bean in spring?
A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container. These beans are created with the configuration metadata that you supply to the container. For example, in the form of XML definitions which you have already seen in the previous chapters.
Spring Bean Definition — TutorialsPoint
https://www.tutorialspoint.com/spring/spring_bean_definition.htm

What is default scope of bean in Spring framework?
Spring — Bean Scopes
Sr.No. Scope & Description
1 singleton This scopes the bean definition to a single instance per Spring IoC container (default).
2 prototype This scopes a single bean definition to have any number of object instances.
3 more rows
Spring Bean Scopes — TutorialsPoint
https://www.tutorialspoint.com/spring/spring_bean_scopes.htm

What is configuration file in spring?
Spring configuration files contain bean definitions and other information. They are used to provide context information to the Spring framework. IntelliJ IDEA lets you manage “traditional” XML configuration files and also @Configuration -annotated Java classes.
IntelliJ IDEA 2017.1 Help :: Managing Spring Configuration Files
https://www.jetbrains.com/help/idea/2017.1/managing-spring-configuration-files.html

What is the JPA?
The Java Persistence API (JPA) is a Java specification for accessing, persisting, and managing data between Java objects / classes and a relational database. JPA was defined as part of the EJB 3.0 specification as a replacement for the EJB 2 CMP Entity Beans specification.
Java Persistence/What is JPA? — Wikibooks, open books for an open …
https://en.wikibooks.org/wiki/Java_Persistence/What_is_JPA%3F

What is an entity in Java?
An entity is a lightweight persistence domain object. Typically an entity represents a table in a relational database, and each entity instance corresponds to a row in that table. The primary programming artifact of an entity is the entity class, although entities can use helper classes.
Entities — The Java EE 5 Tutorial
docs.oracle.com/javaee/5/tutorial/doc/bnbqa.html

What is the difference between JPA and Hibernate?
JPA is a specification for accessing, persisting and managing the data between Java objects and the relational database. … Hibernate is a JPA provider. When there is new changes to the specification, hibernate would release its updated implementation for the JPA specification.Mar 27, 2012
java — What’s the difference between JPA and Hibernate? — Stack …
stackoverflow.com/questions/9881611/whats-the-difference-between-jpa-and-hibernate

What is WSDL SOAP and UDDI?
UDDI stands for Universal Description, Discovery, and Integration. UDDI is a specification for a distributed registry of web services. … UDDI can communicate via SOAP, CORBA, and Java RMI Protocol. UDDI uses WSDL to describe interfaces to web services.
Web Services Components — TutorialsPoint
https://www.tutorialspoint.com/webservices/web_services_components.htm

Can we use only JPA without hibernate?
You have to specify the persistence provider(Hibernate,EclipseLink) in order to use the JPA implementation. The persistence providers have the implementaion classes for JPA specifications. You can’t just use JPA, cause it is an API =), but there are plenty JPA implementations: EclipseLink.Mar 18, 2013
java — can we use jpa without hibernate — Stack Overflow
stackoverflow.com/questions/15487631/can-we-use-jpa-without-hibernate

Is JPA a ORM?
JPA is a Java API specification which describes the management of relational data in applications using Java Platform. where as Hibernate is a ORM (Object Relational Mapping) library which follows JPA specification. You can think JPA as a set of Rules which is implemented by Hibernate. JPA is JSR i.e.Mar 27, 2012
java — What’s the difference between JPA and Hibernate? — Stack …
stackoverflow.com/questions/9881611/whats-the-difference-between-jpa-and-hibernate

What is an entity object?
Entity objects are classes that encapsulate the business model, including rules, data, relationships, and persistence behavior, for items that are used in your business application. For example, entity objects can represent. the logical structure of the business, such as product lines, departments, sales, and regions.
What Is an Entity Object?
https://isu.ifmo.ru/docs/IAS904/web.904/b10390/bc_awhatisaneo.htm

What is an entity in a table?
An entity is a term from the entity-relationship model . A relational model (your database schema) is one of the ways to implement the ER model. Relational tables represent relations between simple types like integers and strings, which, in their turn, can represent everything: entities, attributes, relationships.Aug 19, 2009
What is a “database entity” and what types of DBMS items are …
stackoverflow.com/…/what-is-a-database-entity-and-what-types-of-dbms-items-are-consi…

What is the application context in spring?
The ApplicationContext is the central interface within a Spring application for providing configuration information to the application. … A number of classes implement the ApplicationContext interface, allowing for a variety of configuration options and types of applications.
Understanding application-context — Spring
https://spring.io/understanding/application-context

What is Singleton scope in spring?
The Spring documentation describes the following standard scopes: singleton: (Default) Scopes a single bean definition to a single object instance per Spring IoC container. prototype: Scopes a single bean definition to any number of object instances.Jul 11, 2013
java — Spring Bean Scopes — Stack Overflow
stackoverflow.com/questions/17599216/spring-bean-scopes

What is prototype in spring?
In Spring, bean scope is used to decide which type of bean instance should be return from Spring container back to the caller. 5 types of bean scopes supported : singleton — Return a single bean instance per Spring IoC container. prototype — Return a new bean instance each time when requested.Mar 26, 2010
Spring bean scopes example — Mkyong
https://www.mkyong.com/spring/spring-bean-scopes-examples/

What is service in spring?
Spring @Component, @Service, @Repository and @Controller annotations are used for automatic bean detection using classpath scan in Spring framework. @Component is a generic annotation.Oct 30, 2013
Spring @Component, @Service, @Repository, @Controller Difference …
javapapers.com/spring/spring-component-service-repository-controller-difference/

What is meant by persistence framework?
A persistence framework is middleware that assists and automates the storage of program data into databases, especially relational databases. It acts as a layer of abstraction between the application and the database, typically bridging any conceptual differences between the two.
Persistence framework — Wikipedia
https://en.wikipedia.org/wiki/Persistence_framework

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