This document provides an overview of the Spring Inversion of Control (IOC) container and bean configuration. It defines IOC as object creation and management being handled by the container rather than in application code. The Spring IOC container manages Spring beans through dependency injection. Beans can be configured through XML, annotations, or Java configuration. The document discusses the BeanFactory and ApplicationContext containers, bean scopes, and dependency injection through setters, constructors, or methods. It also compares constructor-based versus setter-based dependency injection.
This document discusses data access with JDBC using the Spring Framework. It covers Spring's DAO support, exception handling, and approaches for database access including JdbcTemplate, NamedParameterJdbcTemplate, and controlling connections through a DataSource. The core classes provided by Spring simplify JDBC usage and handle common database tasks like opening/closing connections and transactions.
This document provides an overview of Maven, a build tool for Java projects. It describes what Maven is, its main features such as dependency management and documentation generation. It also outlines how to install and configure Maven, and explains key Maven concepts like the project object model (POM) file, build lifecycles, phases and goals, and dependencies. The document demonstrates how to define dependencies and repositories in the POM file and use Maven to build projects.
This document provides an overview of aspect-oriented programming (AOP) and Spring AOP. It defines key AOP concepts like join points, advice, pointcuts, and aspects. It describes how Spring AOP implements AOP using proxies at the method execution join point. It discusses the @AspectJ style of declaring aspects as Java classes annotated with @Aspect and the different types of advice in AOP like before, after returning, after throwing and around advice. Finally, it provides examples of pointcut expressions in Spring AOP.
The Spring Framework provides a comprehensive Java platform for developing applications. It simplifies development by allowing developers to avoid dealing directly with complex APIs. Spring uses Inversion of Control and Dependency Injection to decouple classes and increase maintainability. The core Spring modules include beans, context, AOP, and aspects. Spring MVC implements the MVC pattern to build web applications, separating the model, view, and controller aspects.
Spring Framework 4 is an open source application framework for Java. It was created to make enterprise Java development easier by promoting best practices. Some key features of Spring include dependency injection for loose coupling, declarative transactions, and aspect oriented programming for separation of concerns. The Spring framework uses an inversion of control container and aspect-oriented programming to configure and manage objects.
Web services can be accessed over a network and are called using HTTP. There are two main types: SOAP uses XML and is language/platform independent; REST uses URI to expose resources and can use JSON. Java has JAX-WS for SOAP and JAX-RS for RESTful services. REST is faster and uses less bandwidth than SOAP. The document discusses implementing REST services in Java using JAX-RS and Jersey, including using annotations and returning Response objects.
The document discusses advanced topics in Spring MVC, including annotation driven controllers, arguments and return types, and validation. It provides details on annotations like @Controller, @RequestMapping, @PathVariable, @ModelAttribute, @CookieValue, @HeaderValue, @DateTimeFormat, @RequestBody, and @ResponseBody and how they can be used to configure controller methods. It also describes what types of arguments controller methods can accept and what return types are allowed.
This document discusses data access with JDBC using the Spring Framework. It covers Spring's DAO support, exception handling, and approaches for database access including JdbcTemplate, NamedParameterJdbcTemplate, and controlling connections through a DataSource. The core classes provided by Spring simplify JDBC usage and handle common database tasks like opening/closing connections and transactions.
This document provides an overview of Maven, a build tool for Java projects. It describes what Maven is, its main features such as dependency management and documentation generation. It also outlines how to install and configure Maven, and explains key Maven concepts like the project object model (POM) file, build lifecycles, phases and goals, and dependencies. The document demonstrates how to define dependencies and repositories in the POM file and use Maven to build projects.
This document provides an overview of aspect-oriented programming (AOP) and Spring AOP. It defines key AOP concepts like join points, advice, pointcuts, and aspects. It describes how Spring AOP implements AOP using proxies at the method execution join point. It discusses the @AspectJ style of declaring aspects as Java classes annotated with @Aspect and the different types of advice in AOP like before, after returning, after throwing and around advice. Finally, it provides examples of pointcut expressions in Spring AOP.
The Spring Framework provides a comprehensive Java platform for developing applications. It simplifies development by allowing developers to avoid dealing directly with complex APIs. Spring uses Inversion of Control and Dependency Injection to decouple classes and increase maintainability. The core Spring modules include beans, context, AOP, and aspects. Spring MVC implements the MVC pattern to build web applications, separating the model, view, and controller aspects.
Spring Framework 4 is an open source application framework for Java. It was created to make enterprise Java development easier by promoting best practices. Some key features of Spring include dependency injection for loose coupling, declarative transactions, and aspect oriented programming for separation of concerns. The Spring framework uses an inversion of control container and aspect-oriented programming to configure and manage objects.
Web services can be accessed over a network and are called using HTTP. There are two main types: SOAP uses XML and is language/platform independent; REST uses URI to expose resources and can use JSON. Java has JAX-WS for SOAP and JAX-RS for RESTful services. REST is faster and uses less bandwidth than SOAP. The document discusses implementing REST services in Java using JAX-RS and Jersey, including using annotations and returning Response objects.
The document discusses advanced topics in Spring MVC, including annotation driven controllers, arguments and return types, and validation. It provides details on annotations like @Controller, @RequestMapping, @PathVariable, @ModelAttribute, @CookieValue, @HeaderValue, @DateTimeFormat, @RequestBody, and @ResponseBody and how they can be used to configure controller methods. It also describes what types of arguments controller methods can accept and what return types are allowed.
The document provides an overview of the Spring framework. It discusses that Spring simplifies enterprise Java development through dependency injection, aspect-oriented programming, and reducing boilerplate code. It describes the main Spring modules including the core container, AOP, DAO, and web modules. The core container manages the beans in a Spring application, creating, configuring, and wiring them together. The document contrasts BeanFactory and ApplicationContext, noting ApplicationContext provides additional features like internationalization support and publishing events.
This document provides an overview of Spring MVC, the model-view-controller framework for building web applications in Spring. It discusses Spring MVC's request processing workflow including the front controller and application context. It also covers controllers, mapping requests, returning views and data representation. Key topics include RESTful design, annotations like @RequestMapping and return types, and view resolvers for resolving JSP and other view technologies.
Starting with Spring MVC 2.5, Annotation-Based Controllers became the preferred model for development (the Interface-based Controller hierarchy will be deprecated in Spring 3). This session will teach developers familiar with the old model how to use the new Annotation-based Controllers. This will also provide the basis for writing JSR 286 portlets using Spring 3.
Sample code available here:
http://www.ja-sig.org/wiki/x/vYS8AQ
Full screencast available here:
http://vimeo.com/10020881
The document provides information on various Spring annotations used for configuring and developing Spring applications. It discusses core Spring annotations like @Autowired, @Component, and @Transactional for configuring beans and transactions. It also covers Spring MVC annotations for developing web controllers and AspectJ annotations for implementing aspects. The document is a reference guide to the annotations supported in Spring 2.5.
This is a basic tutorial on Spring core.
Best viewed when animations and transitions are supported, e.g., view in MS Powerpoint. So, please try to view it with animation else the main purpose of this presentation will be defeated.
This document provides an overview of Spring MVC including:
- Spring MVC is a web framework built on the Servlet API that uses the MVC pattern. It features a DispatcherServlet that handles requests and delegates to controllers.
- The request processing workflow in Spring MVC involves the DispatcherServlet dispatching tasks to controllers, which interact with services and return a view name. The view is then rendered using a ViewResolver.
- Spring MVC applications use a WebApplicationContext containing web-related beans like controllers and mappings, which can override beans in the root context. Configuration can be done via XML or Java-based approaches. Important annotations map requests and bind parameters.
In this Java Spring Training session, you will learn Spring – Inversion of Control, Dependency Injection and Bean definitions. Topics covered in this session are:
For more information, visit this link:
Spring Framework
• Core Container
• Data Access/Integration
• Web Layer
• Spring Setup
• Key features
• Spring Bean
• Dependency Injection
• Relation between DI and IoC
• Spring IoC Containers
• Spring DI
https://www.mindsmapped.com/courses/software-development/spring-fundamentals-learn-spring-framework-and-spring-boot/
This session will provide a complete tour of using the Spring MVC framework to build Java Portlets. It will include an in-depth review of a sample portlet application developed using the latest features of Spring MVC, including Annotation-based Controllers. If you are writing Portlets and using Spring, this session is for you.
We'll begin by discussing the unique differences and challenges when developing Portlets instead of traditional Servlet webapps. Then we'll talk about the unique approach that Spring MVC takes towards Portlets that fully leverages the Portlet lifecycle, instead of masking it like many other frameworks. We'll take an extensive tour of a sample application so we can see all the unique pieces of the framework in action. Finally we'll conclude with discussion of the upcoming support for the Portlet 2.0 (JSR 286) specification that will be part of Spring 3.0.
The document provides an overview of the Spring Framework. It discusses what Spring is, its core modules like the container, AOP, and MVC framework. Spring offers inversion of control, dependency injection, transaction management, and aims to make applications easier to develop and test. The document also demonstrates a simple "Hello World" example using Spring that defines a POJO interface and implementation, configures the Spring container in XML, and acquires the object from the container using only the interface.
This document provides an overview of JavaServer Faces (JSF), including:
- An introduction to JSF and what it is
- A description of the JSF request lifecycle and faces servlet
- An explanation of JSF component models and commonly used tags
- A step-by-step guide for creating a basic "Hello World" JSF application
- Details about JSP architectures (Model 1 and Model 2) that provide context for JSF
This document summarizes the basics of Spring MVC, including the model-view-controller (MVC) pattern it uses. It describes the main components - the model which contains application data, the view which displays data to the user, and the controller which handles requests and coordinates the model and view. It provides examples of how controllers work using annotations like @RequestMapping and how they can return different types of responses. It also briefly mentions other related concepts like interceptors, exceptions, and static resources.
University of Colorado PhD software engineering student Aaron Schram explains the details of creating a web applications using the Spring MVC framework
This document summarizes key features of the Spring MVC framework, including:
1. Spring MVC uses a DispatcherServlet as a front controller to handle requests and dispatch them to controllers. Controllers return ModelAndViews to select views.
2. Configuration can be done via XML or annotations. Common view technologies like JSP and Velocity are supported.
3. Features include form binding, validation, internationalization, AJAX support, and error handling. Table sorting and pagination are demonstrated using the DisplayTag library.
The document describes the steps to integrate Hibernate with Spring:
1. Add Hibernate libraries to the classpath
2. Declare a SessionFactory bean in Spring configuration
3. Inject the SessionFactory into a HibernateTemplate
4. Inject the HibernateTemplate into DAO classes
5. Define the HibernateTemplate property in DAO classes
6. Use the HibernateTemplate for queries in DAOs
An alternative is to use HibernateDaoSupport which simplifies the process by directly wiring the SessionFactory.
Spring is an open source Java application framework that uses dependency injection and inversion of control to reduce coupling between application layers. It includes modules for core functions, aspects, data access, web MVC, and other services. Spring promotes loose coupling, testability, and separation of concerns through its lightweight container that manages lifecycles and dependencies of application components.
The document discusses Spring dependency injection and containers. It explains that Spring uses dependency injection to manage application components. The core container is responsible for creating associations between collaborating objects. There are two main types of containers - bean factories and application contexts. Bean factories are simple object containers while application contexts provide more features like internationalization support.
Introduction
Framework Modules
Spring Dependencies
Dependency Injection
The IoC Container
Spring IoC Container and Beans
XML-based Configuration Metadata
XML-based Beans
Instantiation of Beans
Dependency Injection
Bean Scopes
Depends On & Lazy-initialized Beans
Customizing the Nature of a Bean
Using PropertyPlaceholderConfigurer
https://notebookbft.wordpress.com/
The document contains questions related to Java Spring and Hibernate concepts and implementations. Some key concepts discussed include:
- Dependency injection and inversion of control in Spring
- Differences between Spring BeanFactory and ApplicationContext
- Typical bean lifecycle in Spring container
- Benefits of using an ORM tool like Hibernate
- General flow of communication between Hibernate and a relational database
The document discusses Spring IOC and DAO. It provides an overview of Spring framework, Inversion of Control (IOC) and Dependency Injection in Spring. It also describes how Spring supports data access with JDBC Template and DAO implementations. The JDBC Template simplifies JDBC usage and avoids common errors by providing callback interfaces for writing and reading database operations. Spring DAO classes can extend support classes to get a JDBC or Hibernate template based on the persistence mechanism.
The document provides an overview of the Spring framework. It discusses that Spring simplifies enterprise Java development through dependency injection, aspect-oriented programming, and reducing boilerplate code. It describes the main Spring modules including the core container, AOP, DAO, and web modules. The core container manages the beans in a Spring application, creating, configuring, and wiring them together. The document contrasts BeanFactory and ApplicationContext, noting ApplicationContext provides additional features like internationalization support and publishing events.
This document provides an overview of Spring MVC, the model-view-controller framework for building web applications in Spring. It discusses Spring MVC's request processing workflow including the front controller and application context. It also covers controllers, mapping requests, returning views and data representation. Key topics include RESTful design, annotations like @RequestMapping and return types, and view resolvers for resolving JSP and other view technologies.
Starting with Spring MVC 2.5, Annotation-Based Controllers became the preferred model for development (the Interface-based Controller hierarchy will be deprecated in Spring 3). This session will teach developers familiar with the old model how to use the new Annotation-based Controllers. This will also provide the basis for writing JSR 286 portlets using Spring 3.
Sample code available here:
http://www.ja-sig.org/wiki/x/vYS8AQ
Full screencast available here:
http://vimeo.com/10020881
The document provides information on various Spring annotations used for configuring and developing Spring applications. It discusses core Spring annotations like @Autowired, @Component, and @Transactional for configuring beans and transactions. It also covers Spring MVC annotations for developing web controllers and AspectJ annotations for implementing aspects. The document is a reference guide to the annotations supported in Spring 2.5.
This is a basic tutorial on Spring core.
Best viewed when animations and transitions are supported, e.g., view in MS Powerpoint. So, please try to view it with animation else the main purpose of this presentation will be defeated.
This document provides an overview of Spring MVC including:
- Spring MVC is a web framework built on the Servlet API that uses the MVC pattern. It features a DispatcherServlet that handles requests and delegates to controllers.
- The request processing workflow in Spring MVC involves the DispatcherServlet dispatching tasks to controllers, which interact with services and return a view name. The view is then rendered using a ViewResolver.
- Spring MVC applications use a WebApplicationContext containing web-related beans like controllers and mappings, which can override beans in the root context. Configuration can be done via XML or Java-based approaches. Important annotations map requests and bind parameters.
In this Java Spring Training session, you will learn Spring – Inversion of Control, Dependency Injection and Bean definitions. Topics covered in this session are:
For more information, visit this link:
Spring Framework
• Core Container
• Data Access/Integration
• Web Layer
• Spring Setup
• Key features
• Spring Bean
• Dependency Injection
• Relation between DI and IoC
• Spring IoC Containers
• Spring DI
https://www.mindsmapped.com/courses/software-development/spring-fundamentals-learn-spring-framework-and-spring-boot/
This session will provide a complete tour of using the Spring MVC framework to build Java Portlets. It will include an in-depth review of a sample portlet application developed using the latest features of Spring MVC, including Annotation-based Controllers. If you are writing Portlets and using Spring, this session is for you.
We'll begin by discussing the unique differences and challenges when developing Portlets instead of traditional Servlet webapps. Then we'll talk about the unique approach that Spring MVC takes towards Portlets that fully leverages the Portlet lifecycle, instead of masking it like many other frameworks. We'll take an extensive tour of a sample application so we can see all the unique pieces of the framework in action. Finally we'll conclude with discussion of the upcoming support for the Portlet 2.0 (JSR 286) specification that will be part of Spring 3.0.
The document provides an overview of the Spring Framework. It discusses what Spring is, its core modules like the container, AOP, and MVC framework. Spring offers inversion of control, dependency injection, transaction management, and aims to make applications easier to develop and test. The document also demonstrates a simple "Hello World" example using Spring that defines a POJO interface and implementation, configures the Spring container in XML, and acquires the object from the container using only the interface.
This document provides an overview of JavaServer Faces (JSF), including:
- An introduction to JSF and what it is
- A description of the JSF request lifecycle and faces servlet
- An explanation of JSF component models and commonly used tags
- A step-by-step guide for creating a basic "Hello World" JSF application
- Details about JSP architectures (Model 1 and Model 2) that provide context for JSF
This document summarizes the basics of Spring MVC, including the model-view-controller (MVC) pattern it uses. It describes the main components - the model which contains application data, the view which displays data to the user, and the controller which handles requests and coordinates the model and view. It provides examples of how controllers work using annotations like @RequestMapping and how they can return different types of responses. It also briefly mentions other related concepts like interceptors, exceptions, and static resources.
University of Colorado PhD software engineering student Aaron Schram explains the details of creating a web applications using the Spring MVC framework
This document summarizes key features of the Spring MVC framework, including:
1. Spring MVC uses a DispatcherServlet as a front controller to handle requests and dispatch them to controllers. Controllers return ModelAndViews to select views.
2. Configuration can be done via XML or annotations. Common view technologies like JSP and Velocity are supported.
3. Features include form binding, validation, internationalization, AJAX support, and error handling. Table sorting and pagination are demonstrated using the DisplayTag library.
The document describes the steps to integrate Hibernate with Spring:
1. Add Hibernate libraries to the classpath
2. Declare a SessionFactory bean in Spring configuration
3. Inject the SessionFactory into a HibernateTemplate
4. Inject the HibernateTemplate into DAO classes
5. Define the HibernateTemplate property in DAO classes
6. Use the HibernateTemplate for queries in DAOs
An alternative is to use HibernateDaoSupport which simplifies the process by directly wiring the SessionFactory.
Spring is an open source Java application framework that uses dependency injection and inversion of control to reduce coupling between application layers. It includes modules for core functions, aspects, data access, web MVC, and other services. Spring promotes loose coupling, testability, and separation of concerns through its lightweight container that manages lifecycles and dependencies of application components.
The document discusses Spring dependency injection and containers. It explains that Spring uses dependency injection to manage application components. The core container is responsible for creating associations between collaborating objects. There are two main types of containers - bean factories and application contexts. Bean factories are simple object containers while application contexts provide more features like internationalization support.
Introduction
Framework Modules
Spring Dependencies
Dependency Injection
The IoC Container
Spring IoC Container and Beans
XML-based Configuration Metadata
XML-based Beans
Instantiation of Beans
Dependency Injection
Bean Scopes
Depends On & Lazy-initialized Beans
Customizing the Nature of a Bean
Using PropertyPlaceholderConfigurer
https://notebookbft.wordpress.com/
The document contains questions related to Java Spring and Hibernate concepts and implementations. Some key concepts discussed include:
- Dependency injection and inversion of control in Spring
- Differences between Spring BeanFactory and ApplicationContext
- Typical bean lifecycle in Spring container
- Benefits of using an ORM tool like Hibernate
- General flow of communication between Hibernate and a relational database
The document discusses Spring IOC and DAO. It provides an overview of Spring framework, Inversion of Control (IOC) and Dependency Injection in Spring. It also describes how Spring supports data access with JDBC Template and DAO implementations. The JDBC Template simplifies JDBC usage and avoids common errors by providing callback interfaces for writing and reading database operations. Spring DAO classes can extend support classes to get a JDBC or Hibernate template based on the persistence mechanism.
Java Spring framework, Dependency Injection, DI, IoC, Inversion of ControlArjun Thakur
Hi, I just prepared a presentation on Java Spring Framework, the topics covered include architecture of Spring framework and it's modules. Spring Core is explained in detail including but not limited to Inversion of Control (IoC), Dependency Injection (DI) etc. Thank you and happy learning. :)
This document provides an introduction and overview of the Spring Framework. It discusses that Spring is an open-source application framework that provides dependency injection and inversion of control. It allows for lightweight containers and frameworks. Spring provides dependency management between objects, cleaner separation of responsibilities, and the ability to build applications from POJOs. The document covers key Spring concepts like inversion of control, dependency injection, bean scopes, lifecycle callbacks, and autowiring. It provides examples of how to configure these concepts in Spring.
This document contains 100 Java and Java EE interview questions related to topics like Java servlets, JSP, Spring, Hibernate, JDBC, JSF, Struts, EJB and more. Some key questions covered include what are considered web components in Java, what is Hibernate and ORM, differences between proxy and adapter patterns, types of dependency injection supported by Spring, and advantages of Spring framework.
Some of the common interview questions asked during a Java Interview. These may apply to Java Interviews. Be prepared with answers for the interview questions below when you prepare for an interview. Also have an example to explain how you worked on various interview questions asked below. Java Developers are expected to have references and be able to explain from their past experiences. All the Best for a successful career as a Java Developer!
Session 43 - Spring - Part 1 - IoC DI BeansPawanMM
In this session you will learn:
1.Spring Framework
2. Core Container
3. Data Access/Integration
4. Web Layer
5. Spring Setup
6. Key features
7. Spring Bean
8. Dependency Injection
9. Relation between DI and IoC
10. Spring IoC Containers
11. Spring DI
The document provides a multiple choice quiz on Spring Framework concepts. It includes 10 multiple choice questions covering topics like Spring modules, bean scopes, annotation-driven configuration, Spring MVC, transactions, dependency injection, and Aspect Oriented Programming (AOP). It also includes 5 open-ended questions asking about Maven/Gradle, the web.xml file, the <annotation-driven/> tag, ViewResolvers in Spring, and descriptions of common annotations with examples.
The document provides an overview of the Spring ecosystem and framework. It describes Spring as an open source application framework and inversion of control container for Java. The key aspects covered include:
- The Spring ecosystem provides infrastructure support for enterprise Java applications through the core Spring Framework.
- The Spring Framework uses dependency injection and inversion of control to manage components (beans) and their dependencies.
- Beans and their relationships are configured through XML, Java configuration, or annotations. The Spring container manages the lifecycle and wiring of beans.
- Common features like autowiring, dependency injection, and resource injection are explained to demonstrate how the Spring container handles configuration and dependencies.
This document provides an overview of key concepts in the Spring Framework including dependency injection, modules, beans, and annotations. It explains that Spring handles infrastructure and configuration so developers can focus on the application. It also describes concepts like the singleton scope, autowiring, AOP, and the Spring Expression Language.
This document provides an overview of the Spring framework. Key points include:
- Spring is a lightweight container that promotes loose coupling and separation of concerns through dependency injection.
- It simplifies programming without J2EE by providing declarative transaction management and abstraction from underlying technologies.
- Spring uses dependency injection and inversion of control to configure and wire together components. It supports setter, constructor, and autowiring of dependencies.
- The Spring container manages the lifecycle of beans through initialization and destruction callbacks.
This document provides an introduction to the Spring MVC framework. It discusses where web development has been with traditional servlet-based approaches, and how MVC frameworks like Spring provide better structure. Spring uses inversion of control (IoC) and dependency injection to reduce tight coupling between objects. The document provides an example Spring MVC application that uses a controller to handle requests and bind them to a form backing object using Spring's tag library. It discusses configuration in the Spring XML file and how validation would work. Overall the summary introduces the key concepts of Spring MVC including IoC, dependency injection, controllers, and form handling.
This document provides an overview of key Spring concepts including dependency injection, inversion of control, annotation-based configuration, bean lifecycle, profiles, AOP, and testing. It describes how Spring offers a simpler approach to enterprise Java development using POJOs and how different features like profiles, conditional beans, and expressions work.
The document provides an overview of the Spring Framework. It describes Spring as an open source application development framework for Java that provides features like inversion of control (IoC) and dependency injection. The key benefits of Spring include its modular architecture, support for testing, integration with other technologies like ORM frameworks, and web MVC framework. The core container in Spring uses dependency injection to manage application components (beans). Configuration can be done via XML, annotations, or Java-based approaches. Spring also supports aspects like dependency injection, AOP, and auto-wiring to reduce coupling between objects.
Spring is a lightweight Java framework that uses inversion of control (IOC) and dependency injection (DI). It includes modules for core functionality, aspect-oriented programming (AOP), data access, web development, and integration with other frameworks. The core container module provides the basic functionality of the Spring framework including bean management and wiring. Other key modules include the application context module, AOP module, JDBC abstraction module, ORM integration module, and web module.
The document discusses Spring, a popular Java application framework. It provides definitions and explanations of key Spring concepts like frameworks, dependency injection, and the Spring application context. It describes the modular architecture of Spring, including core modules for aspects like data access, web, and AOP. It also compares Spring to Hibernate, explaining that Spring is a framework that helps follow MVC architecture while Hibernate provides object-relational mapping.
The document discusses the Spring Framework, an open source application framework for Java. It provides inversion of control and dependency injection to manage application objects. The core package provides dependency injection while other packages provide additional features like transaction management, ORM integration, AOP, and MVC web development. The framework uses an IoC container to manage application objects called beans through configuration metadata.
The document discusses Spring Framework concepts including dependency injection, bean scopes, and Aspect-Oriented Programming (AOP). It defines singleton, prototype, request, session, and global session scopes. It describes constructor and setter-based dependency injection. It also covers abstract beans, the Spring IOC container, bean factories, container instantiation, and AOP fundamentals like aspects, join points, advice, pointcuts, introductions, and weaving.
The document provides an overview of the Spring Framework. It describes Spring as an open source, lightweight Java application framework that provides inversion of control and dependency injection. The document outlines Spring's architecture including core features like the bean factory, dependency injection, aspect-oriented programming, and web functionality. It also covers concepts like bean definition, dependency injection types, and bean lifecycle events.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
AppSec PNW: Android and iOS Application Security with MobSFAjin Abraham
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance PanelsNorthern Engraving
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
"$10 thousand per minute of downtime: architecture, queues, streaming and fin...Fwdays
Direct losses from downtime in 1 minute = $5-$10 thousand dollars. Reputation is priceless.
As part of the talk, we will consider the architectural strategies necessary for the development of highly loaded fintech solutions. We will focus on using queues and streaming to efficiently work and manage large amounts of data in real-time and to minimize latency.
We will focus special attention on the architectural patterns used in the design of the fintech system, microservices and event-driven architecture, which ensure scalability, fault tolerance, and consistency of the entire system.
Session 1 - Intro to Robotic Process Automation.pdfUiPathCommunity
👉 Check out our full 'Africa Series - Automation Student Developers (EN)' page to register for the full program:
https://bit.ly/Automation_Student_Kickstart
In this session, we shall introduce you to the world of automation, the UiPath Platform, and guide you on how to install and setup UiPath Studio on your Windows PC.
📕 Detailed agenda:
What is RPA? Benefits of RPA?
RPA Applications
The UiPath End-to-End Automation Platform
UiPath Studio CE Installation and Setup
💻 Extra training through UiPath Academy:
Introduction to Automation
UiPath Business Automation Platform
Explore automation development with UiPath Studio
👉 Register here for our upcoming Session 2 on June 20: Introduction to UiPath Studio Fundamentals: https://community.uipath.com/events/details/uipath-lagos-presents-session-2-introduction-to-uipath-studio-fundamentals/
"Choosing proper type of scaling", Olena SyrotaFwdays
Imagine an IoT processing system that is already quite mature and production-ready and for which client coverage is growing and scaling and performance aspects are life and death questions. The system has Redis, MongoDB, and stream processing based on ksqldb. In this talk, firstly, we will analyze scaling approaches and then select the proper ones for our system.
The Department of Veteran Affairs (VA) invited Taylor Paschal, Knowledge & Information Management Consultant at Enterprise Knowledge, to speak at a Knowledge Management Lunch and Learn hosted on June 12, 2024. All Office of Administration staff were invited to attend and received professional development credit for participating in the voluntary event.
The objectives of the Lunch and Learn presentation were to:
- Review what KM ‘is’ and ‘isn’t’
- Understand the value of KM and the benefits of engaging
- Define and reflect on your “what’s in it for me?”
- Share actionable ways you can participate in Knowledge - - Capture & Transfer
Essentials of Automations: Exploring Attributes & Automation ParametersSafe Software
Building automations in FME Flow can save time, money, and help businesses scale by eliminating data silos and providing data to stakeholders in real-time. One essential component to orchestrating complex automations is the use of attributes & automation parameters (both formerly known as “keys”). In fact, it’s unlikely you’ll ever build an Automation without using these components, but what exactly are they?
Attributes & automation parameters enable the automation author to pass data values from one automation component to the next. During this webinar, our FME Flow Specialists will cover leveraging the three types of these output attributes & parameters in FME Flow: Event, Custom, and Automation. As a bonus, they’ll also be making use of the Split-Merge Block functionality.
You’ll leave this webinar with a better understanding of how to maximize the potential of automations by making use of attributes & automation parameters, with the ultimate goal of setting your enterprise integration workflows up on autopilot.
Fueling AI with Great Data with Airbyte WebinarZilliz
This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
"Scaling RAG Applications to serve millions of users", Kevin GoedeckeFwdays
How we managed to grow and scale a RAG application from zero to thousands of users in 7 months. Lessons from technical challenges around managing high load for LLMs, RAGs and Vector databases.
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor IvaniukFwdays
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
What is an RPA CoE? Session 1 – CoE VisionDianaGray10
In the first session, we will review the organization's vision and how this has an impact on the COE Structure.
Topics covered:
• The role of a steering committee
• How do the organization’s priorities determine CoE Structure?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
inQuba Webinar Mastering Customer Journey Management with Dr Graham HillLizaNolte
HERE IS YOUR WEBINAR CONTENT! 'Mastering Customer Journey Management with Dr. Graham Hill'. We hope you find the webinar recording both insightful and enjoyable.
In this webinar, we explored essential aspects of Customer Journey Management and personalization. Here’s a summary of the key insights and topics discussed:
Key Takeaways:
Understanding the Customer Journey: Dr. Hill emphasized the importance of mapping and understanding the complete customer journey to identify touchpoints and opportunities for improvement.
Personalization Strategies: We discussed how to leverage data and insights to create personalized experiences that resonate with customers.
Technology Integration: Insights were shared on how inQuba’s advanced technology can streamline customer interactions and drive operational efficiency.
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
2. OUTLINE
Inversion of Control explained
Spring IOC Container
Spring Bean
Container Overview
Spring Bean Configuration
XML Based Spring Bean Configuration
Annotation Based Spring Bean Configuration
Java Based Spring Bean Configuration
HARSHIT CHOUDHARY
4. INVERSION OF CONTROL
Object management inverted from Application Code to the Container
A Design Pattern that says you do not create your objects but describe how they should be created.
You don't directly connect your components and services together in code but describe which services are needed by which components in a
configuration file.
Help achieve loose coupling between Object Dependencies
Dependency Injection is a specialized form of Inversion of Control.
Object Dependencies are injected by other assembler objects.
Example of IOC is explained in the upcoming slides
HARSHIT CHOUDHARY
5. INVERSION OF CONTROL
HARSHIT CHOUDHARY
Class Diagram for a Registration Application, which may need to connect to different Databases.
6. INVERSION OF CONTROL (IOC)
HARSHIT CHOUDHARY
package com.training.spring;
public class RegistrationApp {
public static void main(String[] args) {
DBConnect dbcon = new MySQLConnection();
dbcon.connect();
}
}
package com.training.spring;
public class RegistrationApp {
public static void main(String[] args) {
DBConnect dbcon = new OracleConnection();
dbcon.connect();
}
}
Creating object of
corresponding DB class
7. INVERSION OF CONTROL (IOC)
HARSHIT CHOUDHARY
package com.training.spring;
public class RegistrationApp {
public static void main(String[] args) {
DBConnect dbcon = (DBConnect)Container.getComponent(args[0]);
if(dbcon !=null)
dbcon.connect();
}
}
IOC reverse the process of Object creation.
Container is going to provide us with the
required class object
8. INVERSION OF CONTROL (IOC)
HARSHIT CHOUDHARY
package com.training.spring;
public class Container {
private static Map<String, object> container;
public synchronized static Object getComponent(final String componentName) {
if (container == null) {
container = new HashMap<String, Object>();
}
Object result = container.get(componentName);
if (result == null) {
if ("mysql".equals(componentName)) {
result = new MySQLConnection();
} else if ("oracle".equals(componentName)) {
result = new OracleConnection();
} else if ("sqlserver".equals(componentName)) {
result = new SQLServerConnection();
}
if (result != null) {
container.put(componentName, result);
}
}
return result;
}
}
Container class Implementation
9. SUMMEDUP
DI is a process whereby objects define their dependencies through constructor arguments, setters or
arguments to a factory method. The container then injects those dependencies when it creates the bean
This process is fundamentally the inverse, hence the name Inversion of Control (IoC), of the bean itself
controlling the instantiation or location of its dependencies by using direct construction of classes, or a
mechanism such as the Service Locator pattern.
HARSHIT CHOUDHARY
10. WHAT DOES IOC DO?
• Create new objects
• Configure/solve dependency among objects and assemble them
• Allow objects to be retrieved by id/name
• Manage object’s lifecycle
• Allow external configuration
HARSHIT CHOUDHARY
11. WHY DO WE USE IOC?
• Achieve Loose coupling among Object Dependencies
• Reduce the amount of code in your application
• Does the plumbing work for you
• Application is more testable
• No more creating and hooking of objects together
• No more lookup
HARSHIT CHOUDHARY
13. SPRING IOC CONTAINER
Spring IOC Container is the program that injects dependencies into an object and make it
ready for use.
Packages for Spring IOC container
org.springframework.beans
org.springframework.context
2 types of IoC container implementation
BeanFactory
ApplicationContext
HARSHIT CHOUDHARY
14. BEAN FACTORY
BeanFactory interface provides an advanced configuration mechanism capable of managing any type of
objects
Provides the underlying basis for Spring’s IOC functionality.
It is the root container that loads all the beans and provide dependency injection to enterprise
applications
Now largely historical in nature for most users of Spring.
HARSHIT CHOUDHARY
15. APPLICATIONCONTEXT
ApplicationContext is a subinterface of BeanFactory
It adds easier integration with Spring AOP features, i18n, event publication, and application-layer specific
context
HARSHIT CHOUDHARY
16. USEFUL APPLICATIONCONTEXT IMPLEMENTATIONS
AnnotationConfigApplicationContext: If we are using Spring in standalone java applications and using
annotations for Configuration, then we can use this to initialize the container and get the bean objects.
ClassPathXmlApplicationContext: If we have spring bean configuration xml file in standalone
application, then we can use this class to load the file and get the container object.
FileSystemXmlApplicationContext: This is similar to ClassPathXmlApplicationContext except that the
xml configuration file can be loaded from anywhere in the file system.
AnnotationConfigWebApplicationContext and XmlWebApplicationContext for web applications.
HARSHIT CHOUDHARY
17. BEANFACTORY OR APPLICATIONCONTEXT?
HARSHIT CHOUDHARY
Feature BeanFactory ApplicationContext
Bean instantiation/wiring Yes Yes
Automatic BeanPostProcessor registratio
n
No Yes
Automatic BeanFactoryPostProcessor reg
istration
No Yes
Convenient MessageSource access (for
i18n)
No Yes
ApplicationEvent publication No Yes
Use an ApplicationContext unless you have a good reason for not doing so.
19. SPRING BEANS
The objects that form the backbone of the application and that are managed by Spring IOC Container
are called beans.
A bean is an object that is instantiated, assembled and otherwise managed by a Spring IOC Container.
HARSHIT CHOUDHARY
20. BEAN SCOPES
Singleton
Default Scope
Only one instance of the bean will be created for each container
Prototype
A new instance will be created every time the bean is requested
Request
Same as prototype scope, but is used in Web Applications.
A new instance will be created for each HTTP request
Session
A new bean will be created for each HTTP Session by the container
Global-session
To create global session beans for Portlet applications
HARSHIT CHOUDHARY
22. SPRING BEAN CONFIGURATION
Spring provides three ways to configure beans to be used in applications
XML Based Configuration
By creating Spring Configuration XML file to configure the beans.
Annotation Based Configuration
Spring 2.5 introduced support for annotation-based configuration metadata. Base Container is still XML.
Java Based Configuration
Starting from Spring 3.0, we can configure Spring beans using java programs. Pure Java-based configuration. No need for
having XML file for configuration Metadata
HARSHIT CHOUDHARY
23. XML-BASED CONFIGURATION METADATA
Root element: <beans>
The XML contains one or more <bean> elements
id (or name) attribute to identify the bean
class attribute to specify the fully qualified class
By default, beans are treated as singletons
Can also be prototypes (non singletons)
HARSHIT CHOUDHARY
25. DEPENDENCY INJECTION
Setter-Based
Dependencies are assigned through JavaBeans properties (for example, setter methods)
Constructor-Based
Dependencies are provided as constructor parameters and are not exposed as JavaBeans
properties
Method-Based
The container is responsible for implementing methods at runtime
HARSHIT CHOUDHARY
30. POINTS IN FAVOR OF CONSTRUCTOR
• Constructor injection enforces a strong dependency contract. In short, a bean cannot be instantiated
without being given all of its dependencies. It is perfectly valid and ready to use upon instantiation.
• Because all of the bean’s dependencies are set through its constructor, there’s no need for superfluous
setter methods. This helps keep the lines of code at a minimum.
• By only allowing properties to be set through the constructor, you are, in effect, making those properties
immutable.
HARSHIT CHOUDHARY
31. POINTS IN FAVOR OF SETTER
• If a bean has several dependencies, the constructor’s parameter list can be quite lengthy.
• If there are several ways to construct a valid object, it can be hard to come up with unique constructors
since constructor signatures vary only by the number and type of parameters.
• If a constructor takes two or more parameters of the same type, it may be difficult to determine what
each parameter’s purpose is.
• Constructor injection does not lend itself readily to inheritance. A bean’s constructor will have to pass
parameters to super() in order to set private properties in the parent object.
HARSHIT CHOUDHARY
32. CONSTRUCTOR-BASED VS SETTER-BASED DI
Tips : Use constructor arguments for mandatory dependencies and setters for optional dependencies
More properties, more arguments to constructor
Hence the Spring team generally advocates setter injection
HARSHIT CHOUDHARY
33. METHOD-BASED INJECTION
Useful when a singleton bean needs to use a non-singleton bean
Using CGLIB library, Spring generates dynamically a subclass and overrides the look up method
Spring overrides the getEmployee() using lookup-method injection to provide a new instance of a Employee every time that method
is called
HARSHIT CHOUDHARY
34. METHOD BASED INJECTION
Look-up method must be as follows
<public|protected> [abstract] <return-type> theMethodName(no-arguments)
We need an abstract method which will be configured as a lookup-method in the
configuration file.
Spring will generate a proxy around which will implement the abstract method and return the
object of the target bean. Again used only if scopes of both the beans are different
Also you must have the CGLIB jar(s) in your classpath
HARSHIT CHOUDHARY
35. AUTOWIRING COLLABORATORS
• Spring can resolve collaborators (other beans) automatically for your bean by
inspecting the contents of the ApplicationContext
• Advantages:
- Reduces the need to specify properties or constructor arguments
- New dependencies can be added to a class without changing the configuration
HARSHIT CHOUDHARY
36. AUTOWIRING MODES
HARSHIT CHOUDHARY
Mode Explanation
No (Default) No autowiring
byName Autowiring by property name. Spring looks for a bean with the
same name as the property that needs to be autowired
byType Allows a property to be autowired if exactly one bean of the
property type exists in the container. If more than one exists, a
fatal exception is thrown.
constructor Analogous to byType, but applies to constructor arguments.
autodetect If a default constructor with no argument is found, the
dependencies will be auto-wired by type. Otherwise, they will
be auto-wired by constructor
• Note : Autowiring works best when it is used consistently across a project
40. LIFECYCLE CALLBACKS
Three ways to interact with the container’s bean lifecycle management
By implementing the InitializingBean and DisposableBean interfaces
Using init-method and destroy-method attributes in the bean definition
(if you don’t want your classes coupled to Spring interfaces)
@PostConstruct and @PreDestroy annotations (More on this later)
HARSHIT CHOUDHARY
41. INITIALIZATION CALLBACKS
• Implement the InitializingBean interface and override afterPropertiesSet() method
• Container calls this method upon initialization of your beans
• Alternatively specify a POJO initialization using the init-method attribute
HARSHIT CHOUDHARY
public class Employee implements InitializingBean {
public void afterPropertiesSet() {
// do some initialization work
}}
public class Employee {
public void init() {
// do some initialization work
}
}
<bean id=“emp” class=“com.example.lifecycle.Employee“ init-method="init"/>
42. DESTRUCTION CALLBACKS
• Implement the DisposableBean interface and override destroy() method
• Container calls this method upon destruction of your beans
Alternatively specify a POJO initialization using destroy-method attribute
HARSHIT CHOUDHARY
public class Employee implements DisposableBean{
public void destroy() {
//do some destruction work (like releasing pooled connections) }
}
public class Employee {
public void cleanup() {
// do some destruction work
}
}
<bean id=“emp" class=“com.example.lifecycle.Employee“ destroy-method="cleanup"/>
44. TO CONFIGURE SPRING - ANNOTATION VS XML
Annotations
+ More concise configuration
+ Wiring is more close to the source
- Configuration becomes decentralized and harder to control
XML
+ Wiring done without touching source code or recompiling
+ A centralized location for configuration
- Can become verbose
It is up to the developer to decide the strategy that suits better
HARSHIT CHOUDHARY
45. CAN WE USE BOTH?
Spring supports mix of both
But Annotation injection is performed before XML injection
Hence XML-based injection will override Annotation-based injection for properties wired through both
approaches
HARSHIT CHOUDHARY
46. ANNOTATIONS INTRODUCED IN SPRING
Spring 2.0
@Required
Spring 2.5
@Autowired
@Resource, @PostConstruct, @PreDestroy
Spring 3.0
@Inject, @Qualifier, @Named, and @Provider
HARSHIT CHOUDHARY
47. @REQUIRED
• Applies to bean property setter methods
• Indicates that the affected bean property must be populated at configuration time
• Throws an exception if it has not been set
HARSHIT CHOUDHARY
@Required use. Must use
setter injection to set the
value
48. @AUTOWIRED
Can be used in the Java source code for specifying DI requirement
Places where @Autowired can be used
Fields
Setter methods
Constructor methods
Arbitrary methods
Need to include the below element in the bean configuration file to use this
<context:annotation-config>
HARSHIT CHOUDHARY
49. Because autowiring by type may lead to multiple candidates, it is necessary to have more control over
the selection process
One way to accomplish this is with Spring's @Qualifier annotation.
HARSHIT CHOUDHARY
Of all the beans of Address
class, it uses one matching the
address1 id.
@Qualifier can be used with
parameter names as well.
50. @RESOURCE
Spring also supports injection using the @Resource on fields or bean property setter methods
It takes a 'name' attribute, and by default Spring will interpret that value as the bean name to be injected
i.e., it follows by-name semantics
HARSHIT CHOUDHARY
Must have a bean with
id – address1 of type
Address defined in
config file.
53. @CONFIGURATION AND @BEAN
Class with @Configuration indicates that the class can be used as a source of bean definitions
@Bean-annotated methods define instantiation, configuration, and initialization logic for objects to be
managed by the Spring IoC container
This is equivalent to
HARSHIT CHOUDHARY
@Configuration
public class AppConfig {
@Bean
public MyService myService() {
return new MyServiceImpl();
} }
<beans>
<bean id="myService" class=“MyServiceImpl"/>
</beans>
54. ANNOTATIONCONFIGAPPLICATIONCONTEXT
An ApplicationContext implementation
Uses @Configuration classes as input
HARSHIT CHOUDHARY
public static void main(String[] args) {
ApplicationContext ctx = new
AnnotationConfigApplicationContext(AppConfig.class);
MyService myService = ctx.getBean(MyService.class);
myService.doStuff();
}
55. @CONFIGURATION AND @BEAN
HARSHIT CHOUDHARY
@Configuration
public class AppConfig {
@Bean
public TransferService transferService() {
return new TransferServiceImpl(accountRepository());
}
@Bean
public AccountRepository accountRepository() {
return new InMemoryAccountRepository();
} }
<bean id = "accountRepository"
class = “InMemoryAccountRepository“></bean>
<bean id = "transferService“ class = “TransferServiceImpl">
<property name="accountRepository" ref="accountRepository"/>
</bean>
This is same as:
57. SCANNING COMPONENTS FROM THE CLASSPATH
So far the “base" bean definitions are explicitly defined in the XML file, while the annotations only drive the
dependency injection
But Component Scanning avoids manual configuration
It can automatically scan, detect, and instantiate your components with particular stereotype annotations from
the classpath
The basic annotation denoting a Spring-managed component is @Component
Other stereotypes include @Repository, @Service, and @Controller denoting components in the persistence,
service, and presentation layers, respectively
HARSHIT CHOUDHARY
58. AUTOMATICALLY DETECTING CLASSES AND REGISTERING BEAN
DEFINITIONS
HARSHIT CHOUDHARY
To Add in Configuration XML File other than DataSource
Configuartion common parent package for the two classes