Spring Framework is a popular Java application development framework that simplifies development and reduces boilerplate code. Its core features include dependency injection, aspect-oriented programming, and lightweight containers. Spring supports both XML and annotation-based configuration and provides abstraction for data access technologies like JPA. It also includes additional modules for web applications (Spring MVC), REST services, security, and more. The framework has evolved over several versions to add new features and improve existing capabilities.
This document discusses developing Java applications in an agile way using SpringSource Tool Suite (STS) 2.3.2, Maven, Spring, and tcServer. It covers Spring Framework fundamentals and new features in Spring 3.0 like Java 5+ support and REST. It also summarizes STS, an Eclipse-based IDE for building Spring applications; tcServer, a lightweight application server; and Maven, a project management tool. Using these tools allows developers to focus on code instead of infrastructure and supports an agile development approach with quick iteration and hot deployment.
Spring Certification Questions and Spring Free test are tests created to demonstrate all the functions of our mock exams. You will be able to access ten full questions and will have ten minutes of time for finishing the test.
There are several components you can interact with when you take our mock exams:
Take a look at the progress bar at the top; it will tell how you are progressing through the exam.
Read the question and select only the answers you think are correct by checking the corresponding check box.
Navigate the spring questions using the "Previous" and "Next" buttons.
Mark the spring questions you wish to review later. All the questions you have marked will be listed on the right in the section "marked questions". You will be able to jump directly to the question from this list.
If you want to take a look at the correct answers for a question, just click the "Solution" button. In the solution section you will be able to check your answers as well as find a full explanation of the question.
Keep an eye on the countdown. This will tell you how much time is remaining. When the countdown expires, the test will be automatically submitted.
Once the test is submitted, the "result" section will expand. Here, you will be able to review all the questions of the test. From here, you can also navigate directly to each question.
This session describes the overview on different types of spring containers. Here we can also find simple examples showing the demo to instantiate the containers.
In this session I have described the different types of dependency injections and their usages.
Reference Link : http://en.wikipedia.org/wiki/Dependency_injection
Java Annotation is quite a handy tool and has the ample potential to make developer's life a lot easier(and exciting!). Learning and using custom Java Annotation Processor takes the power of Annotation even a class higher. This slide goes over a few fundamental things of an Annotation Processor to get someone started to write his/her own Annotation Processor in Java.
Key topics are,
- Java Annotation
- Usage of Annotation
- Custom Java Annotation
- Java Annotation Processor
- Usefulness of Annotation Processor
- Dive into the core of Annotation Processor
- Solve a validation problem with Custom Annotation Processor
- Get to know some exciting Annotation Processing tools that already exist
Java 9 introduces modules to the Java programming language and its runtime. Despite this feature being optional, due to the modularization of the standard library existing applications might behave differently when running on a version 9 JVM. Furthermore, because of changes in the runtime, existing libraries and frameworks might not yet correctly process your modularized code. As a result, updating to a Java 9 VM and taking Java 9 into brings its challanges.
This talk discusses the practical implications of module boundaries and analyzes new limitations Java 9 imposes on the reflection API. This talk explains how reflection is used in popular frameworks like Spring and Hibernate and explains why existing applications might break or change their behavior when facing modularized code. Finally, this talk showcases alternatives to now failing Java programming patterns and weights their robustness with regard to the Java releases 10 and upward.
The presenter is an active contributor to open source and helped to migrate many popular Java libraries to supporting Java 9. As a consequence, he as been working with Java 9 for almost two years.
This document discusses developing Java applications in an agile way using SpringSource Tool Suite (STS) 2.3.2, Maven, Spring, and tcServer. It covers Spring Framework fundamentals and new features in Spring 3.0 like Java 5+ support and REST. It also summarizes STS, an Eclipse-based IDE for building Spring applications; tcServer, a lightweight application server; and Maven, a project management tool. Using these tools allows developers to focus on code instead of infrastructure and supports an agile development approach with quick iteration and hot deployment.
Spring Certification Questions and Spring Free test are tests created to demonstrate all the functions of our mock exams. You will be able to access ten full questions and will have ten minutes of time for finishing the test.
There are several components you can interact with when you take our mock exams:
Take a look at the progress bar at the top; it will tell how you are progressing through the exam.
Read the question and select only the answers you think are correct by checking the corresponding check box.
Navigate the spring questions using the "Previous" and "Next" buttons.
Mark the spring questions you wish to review later. All the questions you have marked will be listed on the right in the section "marked questions". You will be able to jump directly to the question from this list.
If you want to take a look at the correct answers for a question, just click the "Solution" button. In the solution section you will be able to check your answers as well as find a full explanation of the question.
Keep an eye on the countdown. This will tell you how much time is remaining. When the countdown expires, the test will be automatically submitted.
Once the test is submitted, the "result" section will expand. Here, you will be able to review all the questions of the test. From here, you can also navigate directly to each question.
This session describes the overview on different types of spring containers. Here we can also find simple examples showing the demo to instantiate the containers.
In this session I have described the different types of dependency injections and their usages.
Reference Link : http://en.wikipedia.org/wiki/Dependency_injection
Java Annotation is quite a handy tool and has the ample potential to make developer's life a lot easier(and exciting!). Learning and using custom Java Annotation Processor takes the power of Annotation even a class higher. This slide goes over a few fundamental things of an Annotation Processor to get someone started to write his/her own Annotation Processor in Java.
Key topics are,
- Java Annotation
- Usage of Annotation
- Custom Java Annotation
- Java Annotation Processor
- Usefulness of Annotation Processor
- Dive into the core of Annotation Processor
- Solve a validation problem with Custom Annotation Processor
- Get to know some exciting Annotation Processing tools that already exist
Java 9 introduces modules to the Java programming language and its runtime. Despite this feature being optional, due to the modularization of the standard library existing applications might behave differently when running on a version 9 JVM. Furthermore, because of changes in the runtime, existing libraries and frameworks might not yet correctly process your modularized code. As a result, updating to a Java 9 VM and taking Java 9 into brings its challanges.
This talk discusses the practical implications of module boundaries and analyzes new limitations Java 9 imposes on the reflection API. This talk explains how reflection is used in popular frameworks like Spring and Hibernate and explains why existing applications might break or change their behavior when facing modularized code. Finally, this talk showcases alternatives to now failing Java programming patterns and weights their robustness with regard to the Java releases 10 and upward.
The presenter is an active contributor to open source and helped to migrate many popular Java libraries to supporting Java 9. As a consequence, he as been working with Java 9 for almost two years.
This document provides an overview of Module 02 - Basic Java Programming which covers basic Java programming concepts such as variables, data types, operators, classes, objects, and methods. It also discusses compiling and running Java applications from the command line and with an IDE. Hands-on labs are included to build a simple Java application with JDeveloper IDE, create a JAR file, and use JConsole to monitor a Java application.
This document provides an outline for a course on fundamental Java programming. The outline includes 8 modules that cover topics like introduction to Java, basic programming, object-oriented programming, file input/output, networking, and threading. The document also provides background information on Java history, principles, platforms, and the HotSpot Java Virtual Machine. It discusses Java's development from 1995 to present and goals of being simple, secure, portable, high-performance and dynamic.
Defaultification Refactoring: A Tool for Automatically Converting Java Method...Raffi Khatchadourian
This document describes a tool that automatically converts Java methods to default methods in interfaces. The tool is implemented as an Eclipse plugin and uses type constraints to identify methods that can be converted from skeletal implementation classes to default methods in corresponding interfaces according to Java 8 features. An evaluation found the tool successfully converted around 20% of candidate methods and was shown to produce compilable and semantically equivalent results through various testing techniques. Future work could include performing additional refactorings simultaneously during the conversion process.
Annotation processing allows for metadata to be added to Java programs without altering the program itself. Annotations can be defined and used to provide information for compilers or allow runtime/compile-time processing. Annotation processors provide a hook into the Java compilation process to generate source code and compile errors/warnings. They work by processing annotated elements in rounds. Testing annotation processors is challenging but libraries like Google's compile-testing library can help. Annotation processing also works on Android by setting up the processor as a Java module and using plugins like android-apt.
Rhino Mocks is a .NET mocking framework that allows developers to easily create and setup mock objects to test interactions using unit tests. It generates both mocks, which allow expectations to be set and verified, and stubs, which simply return preset values without verification. The document provides examples of using Rhino Mocks to generate mocks and stubs of interfaces, set expectations on mocks, and verify mock interactions using the AAA (Arrange, Act, Assert) syntax. It also distinguishes between mocks and stubs.
Test-driven development (TDD) involves writing unit tests before writing code to help ensure code quality and avoid omitted tests. The document discusses the NUnit testing framework for .NET, which uses attributes to identify test fixtures, methods, and setup/teardown functionality. It also covers how to write tests using assertions and run tests using the NUnit GUI or console applications.
The presentation has a quick preamble on SQL injection definition, sqlmap and its key features.
I then illustrate into details common and uncommon problems and respective solutions with examples that a penetration tester faces when he wants to take advantage of any kind of web application SQL injection flaw on real world web applications, for instance SQL injection in ORDER BY and LIMIT clauses, single entry UNION query SQL injection, specific web application technologies IDS bypasses and more.
These slides have been presented at the Front Range OWASP Conference in Denver on March 5, 2009.
Java 9 includes several new features such as JShell (Java Shell), JPMS (Java Platform Module System), and reactive streams. JShell allows interacting with Java from the command line without compiling. JPMS modularizes the JDK and allows for better encapsulation. Reactive streams use a publish-subscribe model and support asynchronous and non-blocking code. Other features include HTTP/2 client support, process API updates, and improvements to the stream API, diamond operator, and try-with-resources. Java 9 aims to improve performance, security, and scalability through these new capabilities.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
The document discusses Struts framework and internationalization (I18N) applications. Some key points:
1. Struts is a MVC framework that simplifies development of web applications. It provides components like ActionServlet and tag libraries.
2. I18N applications display output based on the user's locale/language. This is achieved using properties files with language-specific translations and the ResourceBundle class.
3. In Struts, properties files are configured in struts-config.xml and accessed in JSPs using the <message> tag. Keys not found will result in errors unless null=false is specified.
A pragmatic approach to different SQL Injection techniques such as Stacked statements, Tautology based, Union based, Error based, Second Order and Blind SQL Injection coherently explaining the path behind these attacks including tips and tricks to make them more likely to work in real life.
Also I will show you ways to avoid weak defenses as black listing and quote filtering as well as how privilege escalation may take place from this sort of vulnerabilities.
There will be a live demonstration where you can catch on some handy tools and actually see blind sql injection working efficiently with the latest techniques showing you why this type of SQL injection shouldn't be taken any less seriously than any other.
Finally, a word on countermeasures and real solutions to prevent these attacks, what you should do and what you should not.
http://videos.sapo.pt/ZvwITnTBMzD8HYvEZrov (video)
Method 정의 전체에 Bean을 주입하는 것으로 Method Replace와 Getter Injection 으로 구별할 수 있다.
Method Replace(메소드대체) : 기존 메소드를 런타임중에 새로운 구현으로 대체
Getter Injection(게터주입) : 기존 메소드를 런타임중에 spring Context로부터 특정한 빈을 반환하는 새로운 구현으로 대체. Method 주입의 특별한 경우로 Method가 특정타입의 빈을 반환하도록 선언 해두고 (보통 abstract) 런타임 중 실제 반환되는 빈은 Spring Context에서 오도록 하는 방법
Introduction to Annotations.
What are Annotations➔ Annotations are structured information added to program source code➔ Annotations associated meta-information with definitions➔ They can be attached to any variable, method, expression, or another program element Like comments, they can be sprinkled throughout a program➔ Unlike comments, they have structure, thus making them easier to machine process.
Spring Framework Petclinic sample applicationAntoine Rey
Spring Petclinic is a sample application that has been designed to show how the Spring Framework can be used to build simple but powerful database-oriented applications.
The fork named Spring Framework Petclinic maintains a version both with a plain old Spring Framework configuration and a 3-layer architecture (i.e. presentation --> service --> repository).
Spring boot is a suite, pre-configured, pre-sugared set of frameworks/technologies to reduce boilerplate configuration providing you the shortest way to have a Spring web application up and running with smallest line of code/configuration out-of-the-box.
This document summarizes new features in Java 9 including Jshell for interactive coding, private methods in interfaces, factory methods for immutable collections, enhancements to try-with-resources, the Java Platform Module System (JPMS), Jlink for creating custom runtime images, and updates to the HTTP client and Process APIs. Key areas covered include modularization of the JDK, creating custom runtimes, improved resource management, and support for HTTP/2.
This document discusses different versions of Spring and new features introduced. Spring 3.0 added support for Servlet 3.0, Java SE 7, and MVC additions. Spring 4.0 fully supports Java 8 features and removes deprecated packages/methods. It also includes Groovy bean definition DSL, core container improvements, general web improvements, and testing improvements. Some key features are lambda expressions, date/time API updates, and optional return types in Java 8 as well as conditionally enabling beans and autowiring improvements.
this ppt tells you about what is spring in java. how to use spring? and what are the main methods of spring class? For more info and free java projects visit : http://s4al.com/category/study-java/
This document discusses dependency injection in Spring Framework. It covers setter injection, constructor injection, and method injection using both XML and annotation-based configurations. Setter injection allows injecting dependencies into properties through setter methods. Constructor injection injects dependencies through a class's constructor. Method injection replaces or augments existing methods at runtime. Both setter and constructor injection can be used with XML's <property> and <constructor-arg> tags or with annotations like @Autowired on setter methods or constructors. Method injection replaces or augments methods using the <replaced-method> or <lookup-method> tags in XML.
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.
This document provides an overview of Module 02 - Basic Java Programming which covers basic Java programming concepts such as variables, data types, operators, classes, objects, and methods. It also discusses compiling and running Java applications from the command line and with an IDE. Hands-on labs are included to build a simple Java application with JDeveloper IDE, create a JAR file, and use JConsole to monitor a Java application.
This document provides an outline for a course on fundamental Java programming. The outline includes 8 modules that cover topics like introduction to Java, basic programming, object-oriented programming, file input/output, networking, and threading. The document also provides background information on Java history, principles, platforms, and the HotSpot Java Virtual Machine. It discusses Java's development from 1995 to present and goals of being simple, secure, portable, high-performance and dynamic.
Defaultification Refactoring: A Tool for Automatically Converting Java Method...Raffi Khatchadourian
This document describes a tool that automatically converts Java methods to default methods in interfaces. The tool is implemented as an Eclipse plugin and uses type constraints to identify methods that can be converted from skeletal implementation classes to default methods in corresponding interfaces according to Java 8 features. An evaluation found the tool successfully converted around 20% of candidate methods and was shown to produce compilable and semantically equivalent results through various testing techniques. Future work could include performing additional refactorings simultaneously during the conversion process.
Annotation processing allows for metadata to be added to Java programs without altering the program itself. Annotations can be defined and used to provide information for compilers or allow runtime/compile-time processing. Annotation processors provide a hook into the Java compilation process to generate source code and compile errors/warnings. They work by processing annotated elements in rounds. Testing annotation processors is challenging but libraries like Google's compile-testing library can help. Annotation processing also works on Android by setting up the processor as a Java module and using plugins like android-apt.
Rhino Mocks is a .NET mocking framework that allows developers to easily create and setup mock objects to test interactions using unit tests. It generates both mocks, which allow expectations to be set and verified, and stubs, which simply return preset values without verification. The document provides examples of using Rhino Mocks to generate mocks and stubs of interfaces, set expectations on mocks, and verify mock interactions using the AAA (Arrange, Act, Assert) syntax. It also distinguishes between mocks and stubs.
Test-driven development (TDD) involves writing unit tests before writing code to help ensure code quality and avoid omitted tests. The document discusses the NUnit testing framework for .NET, which uses attributes to identify test fixtures, methods, and setup/teardown functionality. It also covers how to write tests using assertions and run tests using the NUnit GUI or console applications.
The presentation has a quick preamble on SQL injection definition, sqlmap and its key features.
I then illustrate into details common and uncommon problems and respective solutions with examples that a penetration tester faces when he wants to take advantage of any kind of web application SQL injection flaw on real world web applications, for instance SQL injection in ORDER BY and LIMIT clauses, single entry UNION query SQL injection, specific web application technologies IDS bypasses and more.
These slides have been presented at the Front Range OWASP Conference in Denver on March 5, 2009.
Java 9 includes several new features such as JShell (Java Shell), JPMS (Java Platform Module System), and reactive streams. JShell allows interacting with Java from the command line without compiling. JPMS modularizes the JDK and allows for better encapsulation. Reactive streams use a publish-subscribe model and support asynchronous and non-blocking code. Other features include HTTP/2 client support, process API updates, and improvements to the stream API, diamond operator, and try-with-resources. Java 9 aims to improve performance, security, and scalability through these new capabilities.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
The document discusses Struts framework and internationalization (I18N) applications. Some key points:
1. Struts is a MVC framework that simplifies development of web applications. It provides components like ActionServlet and tag libraries.
2. I18N applications display output based on the user's locale/language. This is achieved using properties files with language-specific translations and the ResourceBundle class.
3. In Struts, properties files are configured in struts-config.xml and accessed in JSPs using the <message> tag. Keys not found will result in errors unless null=false is specified.
A pragmatic approach to different SQL Injection techniques such as Stacked statements, Tautology based, Union based, Error based, Second Order and Blind SQL Injection coherently explaining the path behind these attacks including tips and tricks to make them more likely to work in real life.
Also I will show you ways to avoid weak defenses as black listing and quote filtering as well as how privilege escalation may take place from this sort of vulnerabilities.
There will be a live demonstration where you can catch on some handy tools and actually see blind sql injection working efficiently with the latest techniques showing you why this type of SQL injection shouldn't be taken any less seriously than any other.
Finally, a word on countermeasures and real solutions to prevent these attacks, what you should do and what you should not.
http://videos.sapo.pt/ZvwITnTBMzD8HYvEZrov (video)
Method 정의 전체에 Bean을 주입하는 것으로 Method Replace와 Getter Injection 으로 구별할 수 있다.
Method Replace(메소드대체) : 기존 메소드를 런타임중에 새로운 구현으로 대체
Getter Injection(게터주입) : 기존 메소드를 런타임중에 spring Context로부터 특정한 빈을 반환하는 새로운 구현으로 대체. Method 주입의 특별한 경우로 Method가 특정타입의 빈을 반환하도록 선언 해두고 (보통 abstract) 런타임 중 실제 반환되는 빈은 Spring Context에서 오도록 하는 방법
Introduction to Annotations.
What are Annotations➔ Annotations are structured information added to program source code➔ Annotations associated meta-information with definitions➔ They can be attached to any variable, method, expression, or another program element Like comments, they can be sprinkled throughout a program➔ Unlike comments, they have structure, thus making them easier to machine process.
Spring Framework Petclinic sample applicationAntoine Rey
Spring Petclinic is a sample application that has been designed to show how the Spring Framework can be used to build simple but powerful database-oriented applications.
The fork named Spring Framework Petclinic maintains a version both with a plain old Spring Framework configuration and a 3-layer architecture (i.e. presentation --> service --> repository).
Spring boot is a suite, pre-configured, pre-sugared set of frameworks/technologies to reduce boilerplate configuration providing you the shortest way to have a Spring web application up and running with smallest line of code/configuration out-of-the-box.
This document summarizes new features in Java 9 including Jshell for interactive coding, private methods in interfaces, factory methods for immutable collections, enhancements to try-with-resources, the Java Platform Module System (JPMS), Jlink for creating custom runtime images, and updates to the HTTP client and Process APIs. Key areas covered include modularization of the JDK, creating custom runtimes, improved resource management, and support for HTTP/2.
This document discusses different versions of Spring and new features introduced. Spring 3.0 added support for Servlet 3.0, Java SE 7, and MVC additions. Spring 4.0 fully supports Java 8 features and removes deprecated packages/methods. It also includes Groovy bean definition DSL, core container improvements, general web improvements, and testing improvements. Some key features are lambda expressions, date/time API updates, and optional return types in Java 8 as well as conditionally enabling beans and autowiring improvements.
this ppt tells you about what is spring in java. how to use spring? and what are the main methods of spring class? For more info and free java projects visit : http://s4al.com/category/study-java/
This document discusses dependency injection in Spring Framework. It covers setter injection, constructor injection, and method injection using both XML and annotation-based configurations. Setter injection allows injecting dependencies into properties through setter methods. Constructor injection injects dependencies through a class's constructor. Method injection replaces or augments existing methods at runtime. Both setter and constructor injection can be used with XML's <property> and <constructor-arg> tags or with annotations like @Autowired on setter methods or constructors. Method injection replaces or augments methods using the <replaced-method> or <lookup-method> tags in XML.
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.
"Learn All Aspects Of Java Spring Framework step by step, Enhance your skills & Launch Your Career, On-Demand Course affordable price & classes on virtually every topic.Try Before You Buy
for java spring online training visit: https://goo.gl/P15Dbn"
This document summarizes Jonathan Fine's presentation on JavaScript Miller Columns. The presentation covers what Miller Columns are, a demonstration of them, how to specify the user interface and author content, using delegation in frameworks, running tests, sample test data, defining classes in JavaScript, and ways to make JavaScript more Pythonic. The goal is to develop a production version of Miller Columns that relies on library modules and is supported by documentation.
Struts2.x is a MVC framework that implements the MVC pattern using Java technologies. It divides an application into model, view, and controller components. The model are Java classes that represent the application's data and business logic. Views are JSP pages that represent the user interface. The controller is a servlet filter that routes requests to actions and returns the appropriate view. Struts provides tags and libraries that make building MVC web apps with features like validation easier compared to plain JSP/Servlet programming.
This document provides an overview and summary of new features in Spring 4.0, including:
- Comprehensive support for Java 8 features like lambdas and date/time API
- Support for Java EE 7 APIs such as Bean Validation 1.1 and JMS 2.0
- Enhancements to Spring Boot, Spring XD, and messaging architectures
- Almost ready release candidate 1 of Spring 4.0 focusing on Java 8 support, Java EE 7 APIs, and smaller features
Understanding Framework Architecture using Eclipseanshunjain
Talk on Framework architectures given at SAP Labs India for Eclipse Day India 2011 - Code attached Here: https://sites.google.com/site/anshunjain/eclipse-presentations
This document discusses Express.js, a popular Node.js web application framework. It begins by explaining that Express makes developing websites, web apps, and APIs easier by providing route support and templating engine integration. It then demonstrates how to install Express and a templating engine like Jade. Several code examples are provided, including creating a simple REST API with routes, using Express to serve multiple pages with query parameters, and building a RESTful API for a resource like dogs. Resources for further learning about Express and Node.js are listed at the end.
This document provides an overview of the Signal Framework, an open-source IoC, AOP and MVC framework for Java ME that is based on Spring. It describes the key components of the framework, including the IoC container which overcomes Java ME limitations through code generation, a lightweight AOP implementation, and an MVC framework to support developing controller-based applications.
Carol McDonald discusses the key themes and technologies in Java EE 6, which was released on December 10, 2009. The major themes of Java EE 6 are right-sizing with modular profiles, extensibility through pluggability, and ease of development through features like dependency injection and managed beans. New and updated specifications in Java EE 6 include CDI 1.0, EJB 3.1, JPA 2.0, JSF 2.0, JAX-RS 1.1, and Servlet 3.0.
The document provides an overview of the Spring framework, including its history, key features, architecture and files used in Spring projects. It discusses how Spring is a lightweight Java application development framework that reduces code and speeds up development. The core features of Spring include inversion of control (IOC) container and aspect-oriented programming (AOP) support. The Spring architecture is made of modular layers including web, data access, ORM and AOP. It also outlines the typical steps for creating a Spring MVC project in Eclipse, including configuring the application context XML, dispatcher servlet XML and web XML files.
Adding a modern twist to legacy web applicationsJeff Durta
Avoid misery of working with legacy code
We will see how you can add independent and isolated components to existing pages; pages that may be difficult to change
React and Flux allow you to make self-contained additions that handle their own data access/persistence
This document provides an overview of Spring Boot and some of its key features. It discusses the origins and modules of Spring, how Spring Boot simplifies configuration and dependency management. It then covers examples of building Spring Boot applications that connect to a SQL database, use RabbitMQ for messaging, and schedule and run asynchronous tasks.
This document discusses several design patterns: Factory, Flyweight, Singleton, Observer, Proxy, Decorator. It provides definitions and examples of when to use each pattern. The Factory pattern creates objects without specifying the exact class. Flyweight reduces memory usage by sharing instances. Singleton ensures only one instance exists. Observer notifies dependent objects of state changes. Proxy controls access to another object. Decorator adds new behaviors to an object dynamically.
This document discusses how domain-specific languages (DSLs) can be used to make Java code more readable and maintainable. It describes different types of DSLs including external and internal DSLs built with Java and scripting languages. It also discusses JetBrains MPS, a language workbench that provides a new approach for building DSLs without relying on a specific output language. DSLs allow raising the level of abstraction and separating stable and changing parts of code. Fluent APIs and internal DSLs in Java provide readability benefits, while scripting languages allow further readability through features like closures and list literals.
The document discusses best practices for developing jQuery plugins. It covers defining a private scope, using a template, understanding the plugin syntax, adding options through object literals, and iterating through matched elements using this.each(). The key steps are to make the plugin easy to use, use good naming conventions, define a closure, set default parameters, allow chaining by returning this, document the code, and thoroughly test the plugin.
2. What is Spring?
lIt is a Java Application Development Framework
lSimplifies development (Imp)
lReduces boilerplate code
lLoose Coupling
lImproves Testability
3. Core Features
lEmpowers POJOs
lDependency Injection support in container
lAOP support
lLight Weight - Fast
lAnnotation driven
lBuffet of frameworks
lSupports both XML and annotation-based
configuration.
lProvides abstraction on ORM
lThe Spring Test module provides support for an
easy-to-test code.
4. POJOs
lNeed not learn complex frameworks and
technologies like struts or EJBs
lFramework does not interfere with code logic
6. import xyz;
import abc;
@Controller
@RequestMapping("/report")
public class ReportController {
/**
* Entry point for serving an application report
*
*/
@RequestMapping("/fetch)
public void applicationReport(HttpServletResponse response) {
final ApplicationExcelReport report = new ApplicationExcelReport();
final long startMillis = System.currentTimeMillis();
final HSSFWorkbook workbook =
report.getSubmittedApplicationsReport();
final long endMillis = System.currentTimeMillis();
7. DI
lIoC is a more general concept, whereas DI is a
concrete design pattern.
lLoosely coupled architecture.
lSeparation of responsibility.
lConfiguration and code are separate.
lA different implementation can be supplied using
configuration without changing the code
dependent.
lImproves testability.
8. Class Employee
{
public Address address;
public String name;//other stuff
Employee()
{
address=new Address(‘some values here’);
}
}
Simple Employee Class
9. Class Employee
{
public Address address;
public String name;//other stuff
Employee()
{
//check if employee has local address
address=new AddressFactory.getAddress(“LocalAddress”);
//else case get permanent address
}
}
Adding complexity
11. Setter Injection
Class Employee
{
public Address address;
public String name;//other stuff
Employee()
{
}
public void setAddress(Address address)
{
this.address=address;
}
}
12. In Spring
Class Employee
{
public Address address;
public String name;//other stuff
@Autowired
Employee(Address address)
{
this.address=address
}
}
<bean id="AddressBean" class="com.test.Address">
<property name="street" value="43rd" />
<property name="apt" value="29" />
<property name="city" value="New york" />
</bean>
13. AOP
lIsolates non-core functionalities from code logic
*Cross cutting concerns are the functionalities
which are distributed accross the application but
are not part of any core module.
14. public class Employee {
int id;
String name;
public Employee(int id, String name)
{
this.id=id;
this.name=name;
}
public void work()
{
System.out.println(“Employee:”+ name+” is
working”);
}
}
Simple Employee Class
15. public class BookKeeper {
java.util.Date date= new java.util.Date();
/**
* This method records when employee has started working
*/
public void employeeStartsWorking()
{
System.out.println(“Employee has started working”+new
Timestamp(date.getTime()));
}
/**
* This method indicates when employee has stopped working
*/
public void employeeEndsWorking()
{
System.out.println(“Employee has ended working”+new
Timestamp(date.getTime()));
}
}
BookKeeper
16. public class Employee {
int id;
String name;
BookKeeper bookKeeper=new BookKeeper();
public Employee(int id, String name)
{
this.id=id;
this.name=name;
}
public void work()
{
bookKeeper.employeeStartsWorking();
System.out.println(“Employee:”+ name+” is working”);
bookKeeper.employeeEndsWorking();
}
}
Modified Employee
17. @Component
@Aspect
public class BookKeeper {
java.util.Date date= new java.util.Date();
/**
* This method records when employee has started working
*/
@Before(“execution(* com.test.*.*(..))”)
public void employeeStartsWorking()
{
System.out.println(“Employee has started working”+new
Timestamp(date.getTime()));
}
/**
* This method indicates when employee has stopped working
*/
@After(“execution(* com.test.*.*(..))”)
public void employeeEndsWorking()
{
System.out.println(“Employee has ended working”+new
Timestamp(date.getTime()));
}
}
With AOP
18. The Buffet
lSpring Core- container with DI, Bean, Context
lSpring MVC
lSpring Web Services/ REST
lSpring DATA- Spring Data JPA, Spring Data MongoDB,
Spring Data redis etc
lSpring Security
lSpring Batch
lSpring Social – (core, facebook, twitter etc) enables
connectvity with social networking websites
lSpring Mobile- to serve alternative views for different devices.
19.
20. lCore module: It provides features such as IoC and Dependency Injection.
lBeans module: The bean module in Spring Core Container provides
BeanFactory, which is a generic factory pattern that separates the dependencies
such as initialization, creation, and access of the objects from your actual
program logic. BeanFactory in Spring Core Container supports the following two
scopes modes of object:
l Singleton
l Prototype or non-singleton
lContext module: An ApplicationContext container loads Spring bean definitions
and wires them together.
lExpression language: Spring Expression Language (SpEL) is a powerful
expression language supporting the features for querying and manipulating an
object graph at runtime. SpEL can be used to inject bean or bean property in
another bean. SpEL supports method invocation and retrieval of objects by
name from IoC container in Spring.
21. Example-
lXML-based bean configuration
l<?xml version="1.0" encoding="UTF-8"?>
l<beans xmlns="http://www.springframework.org/schema/beans"
l xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
l xsi:schemaLocation="http://www.springframework.org/schema/beans
l http://www.springframework.org/schema/beans/spring-beans.xsd">
l <bean id="..." class="...">
l <!-- configuration for this bean here -->
l </bean>
l <!-- more bean definitions here -->
l</beans>
l<bean id="employeeBean"
l class="src.org.packt.Spring.chapter2.Employee">
lBeanFactory bfObj = new XmlBeanFactory (new FileSystemResource
("c:/beans.xml"));
lMyBean beanObj= (MyBean) bfObj.getBean ("mybean");
22. @Configuration
@MapperScan("com.bsd.acm.data.mapper")
@EnableAspectJAutoProxy
@ComponentScan(basePackages = "com.bsd.acm, com.bsd.acm.service")
public class AppConfig {
@Bean
public SqlSessionFactory sqlSessionFactory() throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(getDataSource());
return sessionFactory.getObject();
}
private static AnnotationConfigApplicationContext context;
static {
context = new AnnotationConfigApplicationContext();
context.register(AppConfig.class);
context.refresh();
}
service = context.getBean(IGroupService.class);
33. A Brief History
lSpring 1.0 (2004)
l Spring Core: This is a lightweight container with various setter and
constructor injection
l Spring AOP: This is an Aspect-oriented Programming (AOP) interception
framework integrated with the core container
l Spring Context: This is an application context concept to provide resource
loading
l Spring DAO: This is a generic DAO support that provides access to a
generic data exception hierarchy with any data access strategy
l Spring JDBC: This is a JDBC abstraction shorten error and resource
handling
l Spring ORM: This is a hibernate support SessionFactory management
l Spring Web: This web MVC Framework integrates various view
technologies
34. Contd..
lSpring 2.x (2006)
l Improvements in the IoC container and AOP, including the @AspectJ
annotation support for AOP development
l Introduction of bean configuration dialects
l XML-based configuration is reduced and XML schema support and
custom namespace is introduced
l Annotation-driven configuration that requires component scanning to
auto-detect annotated components in the classpath using annotations such
as @Component or specialized annotations such as @Repository,
@Service, and @Controller
l Introduces annotations such as @RequestMapping, @RequestParam,
and @ModelAttribute for MVC controllers
35. lSpring 3.x (2009)
lSupports REST in Spring MVC, which is one of the beautiful additions to the
Spring Framework itself.
lIntroduces new annotations @CookieValue and @RequestHeader for
pulling values from cookies and request headers, respectively. It also
supports new XML namespace that makes easier to configure Spring MVC.
lTask scheduling and asynchronous method execution with annotation
support is introduced to this version.
lIntroduces annotation called @Profile, which is used while applying
configuration classes.
lIntroduces PropertySource that is an abstraction performed over any
different source of the key-value pairs. In DefaultEnvironment, there are two
configured PropertySource objects: System.getProperties() and
System.getenv().
lHibernate 4.x is supported by this release through Java Persistence API
(JPA).
lIntroduces @RequestPart annotation to provide access to multipart form-
data content on the controller method arguments.
Contd..
36. lSpring 4.x
lAuto-wiring is based on generic types
lIntroduces the @Description annotation
lIntroduces @Conditional that can conditionally filter
the beans.
lIntroduces the @Jms annotation to support
annotation-driven endpoint
lCatching support is revisited, provided
CacheResolver to resolve caches at runtime
lAdded new testing features such as SQL Script
execution, bootstrap strategy, and so on
lAdded lightweight messaging and WebSocket-style
architectures
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