Web Article - Java questions

1. What can be learned from “Hello World”?
2. How to build your own library?
3. Whan and how a class is loaded and initialized?
4. Static Type Checking
5. How to get double?
6. What is string immutability?
7. How does substring() work in Java
8. Why string is immutable in Java?
9. Is string passed by reference?
10. length vs length()
11. What exactly is null in Java?
12. Comparator vs. Comparable
13. The contract between hashCode() and equals()
14. Overloading vs Overriding
15. What is instance initializer?
16. Fields can not be overridden?
17. How many types of inner classes?
18. What is Inner Interface in Java?
19. Constructors of Sub and Super classes？
20. Public, protected, and private
21. When to use private constructors?
22. How exception handling works?
23. Class hierarchy of exceptions
How file reading/writing works in Java?
24. Read file line by line
25. Write file line by line
26. FileOutputStream vs. FileWriter
27. Should .close() be put in finally block or not?
28. How to use properties file?(explain the code)
When multithreading is useful?
29. Monitors – The Basic Idea of Java synchronization
30. Class hierarchy of Collection and Map
31. A TreeSet Example
32. Deep Understanding of Arrays.sort(T[], Comparator < ? super T > c)
33. ArrayList vs. LinkedList vs. Vector
34. HashSet vs. TreeSet vs. LinkedHashSet
35. HashMap vs. TreeMap vs. HashTable vs. LinkedHashMap
36. Efficient Counter in Java
37. Frequently Used Methods of Java HashMap
38. What is Type Erasure?
39. Why do we need Generic Types in Java?
40. Set vs. Set
Use Map or HashMap as declaration types?
41. What’s the best way of converting Array to ArrayList?
42. Java passes object by reference or by value?
43. Reflection tutorial
44. What is framework?
45. Why do we need Java web frameworks like Struts 2?
What is JVM?
46. JVM run-time data areas
How GC works?
47. How does Java handle aliasing？
48. What does an array look like in memory?
49. What is memory leak?
50. What is Servlet Container? What is Tomcat?
51. What is Aspect Oriented Programming?
52. Library vs. Framework?
53. Java and Computer Science Courses
How Compiler Works?
Type Checking for Object Oriented Features
54. Generate Code for Overloaded and Overridden Methods?
55. Top 10 Methods for Java Arrays
56. Top 10 questions of Java Strings
57. Top 10 Questions for Java Regular Expression
58. Top 10 Questions about Java Exceptions
59. Top 10 questions about Java Collections
60. Top 9 questions about Java Maps
61. The Most Widely Used Java Libraries
———————————————————————-
62. Top 10 Websites for Advanced Level Java Developers
63. Top 10 Books For Advanced Level Java Developers
64. High-quality Java blogs
65. Java vs. Python: Basic Syntax, Date Types
66. How to write a crawler in Java?
67. 8 Things Programmers Can Do at Weekends
68. Blogging Tips
69. Some notes for SCJP
70. Some notes about Declaration, Initialization and Scoping
71. Open Source Projects Using Spring Framework
72. Design Patterns in Stories
73. Spring
74. Struts 2
75. Guava
76. Log4j
77. JSoup
78. Swing
79. Create thread by overriding(another way, difference)
80. join()
81. notify() and wait() (output use other format maybe)
82. Date Formatting(add more)
83. Path of package and class
84. Iteration vs. Recursion
85. Why do we need reflection? (add more)
86. Top 10 algorithms for coding interview
87. How CVS works?
88. Top 8 Diagrams for Understanding Java
89. Why do we need software testing?
90. Convert java jar file to exe

Source

Application - Agent Ransack

Non-indexed full text search of files in a single folder and optional subfolders. 

Agent Ransack WebPage

Application - BareTail

Real-time file viewing

• Optimised real-time viewing engine
• View files of any size (> 2GB)
• Scroll to any point in the whole file instantly
• View files over a network
• Configurable line wrapping
• Configurable TAB expansion
• Configurable font, including spacing and offset to maximise use of screen space

More about BareTail

Application - dbForge SQL Complete

Useful applicatiohn for fastest typing of queries and automatic code formatting to bring more comfort and higher productivity to your work.

dbForge Studio for SQL Server
dbForge Studio for MySQL
dbForge Studio for Oracle

MEO XL Party - Lisboa - 13a15DEZ2013

+info

Web Tutorials

Web Tutorials

JAVA
Simple Java Database Swing Application
How to Send Email from Java Program with Example
Java ResourceBundle Example

Creating Maven Projects
Hibernate 3 with Maven 2 and MySQL 5 Example (XML Mapping and Annotation)
How to create a EJB 3.x project using Maven in Eclipse – Part 1

How to create a EJB 3.x project using Maven in Eclipse – Part 2

Setup of Dynamic Web Project using Maven

How to configure Maven and create a test application
JSF Tomcat Configuration Example
Create Java project with Maven Example

Create Web Application Project with Maven Example

JMS
Spring JMS Example

Java EE7 and Maven
Java EE7 and Maven project for newbies - part1 part2 part3 part4 part5 part6 part7 part8

JSF
JSF 2.2 tutorial with Eclipse and WildFly
JSF Managed Beans Example
JSF Resource Bundles Example

jUnit
JUnit Maven Example

Spring Projects

Spring JPA Data + Hibernate + MySQL + MAVEN
Spring MVC Hello World Example
Spring MVC File Upload Example
Spring MVC beginner tutorial with Spring Tool Suite IDE
Upload Files to Database with Spring MVC and Hibernate

Logging 
Logback
Logback Configuration Example

WELD - Java Contexts and Dependency Injection for the Java EE platform (CDI)

DI (Dependency Injection) / CDI – Basics

Basic Injection / Qualifiers, Scope

Relatórios
Gerando relatorios com ireport e java

MVC
Model-View-Controller (MVC) Structure

JSON
Deserializing Json to a Java Object Using Google’s Gson Library

Test
Testing Java EE 6 with Arquillian (incl. JPA, EJB, Bean Validation and CDI)

JDBC
JDBC Tutorial – The ULTIMATE Guide

MySQL
MySQL connector for Java – How to install in Eclipse and Tomcat

Spring Batch
Writing JSR-352 style jobs with Spring Batch Part 1: Configuration options

Writing JSR-352 style jobs with Spring Batch Part 2: Dependency injection

Spring Data MongoDB
Spring Data MongoDB with Java config

JPA
JPA Tutorial: Setting Up JPA in a Java SE Environment
JPA Tutorial: Mapping Entities – Part 1 - Part 2 - Part 3

Hibernate
Hibernate annotations example
Hibernate tutorial with Eclipse

Persistence
The DAO with JPA and Spring
How to maintain history of tables in Hibernate

Android Tutorials
Android Development Tutorial

Android SQLite Database and ContentProvider - Tutorial
Saving to a SQLite database in your Android application
Resolvendo O Erro Networkonmainthreadexception No Desenvolvimento Android
Android Socket Example
Android Barcode and Qr Scanner Example
Android Data Binding Tutorial
How to sync Remote MySQL DB to SQLite on Android?
Android MultiCast Push Notifications using GCM [Greeting App]

Learning in the web
Code School - Learn by doing

JSF Specification Lead Ed Burns Discusses JSF 2.2 and Java EE7

Source: TheAquarium

Java Tutorials

Java Collections
Sorting Java Map by Key & Value
Java (List & Map) – Create, Populate, Iterate & Sort

Java IO
Java – Unzip Zip Files
Java – Convert String to InputStream
Java – Convert InputStream to String

Java JSON
GSON – Java JSON Library
Jackson – Java to JSON & JSON to Java

Java XML
Castor – Mapping Java Object to XML & XML to Object
XStream – Java Object to XML

Java PDF “iText”
iText – PDF Java Library
Java – iText PDF Table (Structure & Style)
iText – Convert HTML to PDF Using Java

Java Excel “Apache POI”
Apache POI – Java Read & Write Excel

Web & Servlet
Java Servlet 3.0 – @WebServlet
Java Servlet 3.0 Asynchronous Support
Java Servlet Send & Receive JSON Using jQuery.ajax()
Java Servlet – jQuery File Upload (multiple, drag&drop, progress…)
First Time Java API for WebSocket

Simple JUnit Testing
Testing Expected Exceptions (JUnit)

JDBC
Java + JDBC + MySQL

MyBatis
Java + myBatis + MySql

Hibernate
Hibernate (4.x) + MySQL (XML Configuration)

MongoDB + Java Simple Example
MongoDB + Java (Querying)
MongoDB + Java (MapReduce)

Installing Maven 3 on Windows

First Maven Project
How to Run “Execute” Java Main Class Using Maven Command
Create Web App Using Maven, Add Jetty Plugin & Convert to Eclipse

GAE + Google Cloud SQL + myBatis

Source: Hmkcode

My bikes

Road Bike
Orbea Aqua T105 CT 2010

Frame type: Rigid
Frame material: Aluminium
Gears: 20
Wheel size: 700C
Brakeset: ORBEA PRO SILVER
Chainset: SHIMANO R600 34x50 CT
Front Derailleur: Shimano 105
Rear Derailleur: Shimano Ultegra
Shifters: SHIMANO 105
Cassette: Shimano 105
Wheels: SHIMANO WH-R500 BLACK
Frame Description: ORBEA AQUA - Double thickness 7005 aluminium, T6 heat treatment, Orbea Carbon Bronze monocoque fork
Frame construction: TIG Welding
Cassette (Rear Cogs): SHIMANO 105 12-25 10S
Chain: KMC DX-10
Crank: SHIMANO R600 34x50 CT
Pedals: LOOK KEO EASY
Derailleur Front: SHIMANO 105
Derailleur Rear: SHIMANO ULTEGRA
Extras: Hand-painted in a choice of four colours
Handlebar: ORBEA ROAD
Headset: SEMIINTEGRATED BLACK
Rigid Forks: ORBEA CARBON
Saddle: SELLE ITALIA X2 PRO
Seat Post: ORBEA CARBON
Stem: ORBEA ALU
Technologies: Double butted aluminium, T6 heat treatment, monocoque fork
Use: Leisure sport and initiation
Weight: 9.220 kg
Tyres (Front & Back): VITTORIA ZAFIRO 700x23
Type: Road / Racing
Gender/age: Men

Web Article - JSF Tomcat Configuration Example

In this example we can view how configure JSF with Tomcat application server.
For this was created a simple project using JSF and then deployed it in tomcat server.

View Example

Video - JVM

Em sua apresentação no 7Masters Java, em novembro do ano passado, falou sobre JVM e a linguagem para qual ela foi desenvolvida, o Java.

Source

Hibernate Tutorial

Using NoSQL with EclipseLink and JPA?

Using NoSQL with JPA, EclipseLink and Java EE from Reza Rahman

Default CDI Enablement in Java EE 7

CDI provides control over component scanning via the 'bean-discovery-mode' attribute. This attribute has three possible values:

• annotated - loosely translated, means that only components with a class-level annotation are processed.
• all - all components are processed, just like they were in Java EE 6 with the explicit beans.xml.
• none - CDI is effectively disabled.

Source: The Aquarium

PrimeFaces 4.0 Released

+info

Stress-Testing Java EE 6 Applications Without Stress

About movie:
In the context of Java EE 6, unit tests are nice but worthless. Unit and integration tests execute chunks of the business logic in a single thread. Back-end resources and shared states are simulated with mocks. After the initial deployment, your application will never be executed again in a single thread. Strangely enough, most applications aren't load-tested until shortly before the deadline and are put into production regardless of the results. This session shows how to continuously stress-test your Java EE applications with open source tools and lots of fun!

Web Article - Connect SQLite Database with a Remote Shell

In this article see:

• How to connect to a sqlite database existing on Android devices from your PC?
• How to interact with Android sqlite database from remote shell?

Full article in HMKCode

Web Article - Questions about Java Strings

1. How to compare strings? Use “==” or use equals()?

2. Why is char[] preferred over String for security sensitive information?

3. Can we use string for switch statement?

// java 7 only!
switch (str.toLowerCase()) {
      case "a":
           value = 1;
           break;
      case "b":
           value = 2;
           break;
}

4. How to convert string to int?

int n = Integer.parseInt("10");

5. How to split a string with white space characters?

String[] strArray = aString.split("\\s+");

6. Does substring() method create a new string?

str.substring(m, n) + ""

7. String vs StringBuilder vs StringBuffer 

8. How to repeat a string?

String str = "abcd";
String repeated = StringUtils.repeat(str,3);
//abcdabcdabcd

9. How to convert string to date?

String str = "Sep 17, 2013";
Date date = new SimpleDateFormat("MMMM d, yy", Locale.ENGLISH).parse(str);
System.out.println(date);
//Tue Sep 17 00:00:00 EDT 2013

10. How to count # of occurrences of a character in a string?

int n = StringUtils.countMatches("11112222", "1");
System.out.println(n);

A method to detect if string contains only uppercase letter in Java

public static boolean testAllUpperCase(String str){
  for(int i=0; i < str.length(); i++){
   char c = str.charAt(i);
   if(c >= 97 && c <= 122) {
    return false;
   }
  }
  //str.charAt(index)
  return true;
 }

Source: http://www.programcreek.com/

Web Article - OmniFaces goes CDI

"Finally, OmniFaces 1.6 has been released! With this release, OmniFaces features for the first time CDI-related features:

• Fully transparent support for @Inject and @EJB in @FacesConverter and @FacesValidator. No additional configuration or annotations are required...."

Full article in The Balusc Code

Web Article - Build offline with maven

"Sometimes I work at home and sometimes I’ve no VPN connection to my company. Sometimes I sit in a hotel without any internet connection. But I want to compile my projects with maven."

Full article here.

Web Article - Some Interview Questions to Hire a Java EE Developer

"Some examples of interview questions that check the knowledge of the candidate based on his/her experience. The questions were formulated to verify whether the candidate is capable of fulfilling the role of a Java enterprise applications developer." 


Questions:

1. Can you give some examples of improvements in the Java EE5/6 specification in comparison to the J2EE specification?
2. Considering two enterprise systems developed in different platforms, which good options do you propose to exchange data between them?
3. What do you suggest to implement asynchronous code in Java EE?
4. Can you illustrate the use of Stateless Session Bean, Stateful Session Bean and Singleton Session Bean?
5. What is the difference between queue and topic in a message queuing system?
6. Which strategies do you consider to import and export XML content?
7. Can you list some differences between a relational model and an object model?
8. What is the difference between XML Schema, XSLT, WSDL and SOAP?
9. How would you configure an environment to maximize productivity of a development team?

Full article here.

Revista Programar - 42ª Edição - Setembro 2013

(clica para download)

Nesta edição como artigo de capa, um artigo sobre Web Persistente: Local Storage de Telmo Marques. Nesta 42ª edição pode ainda encontrar os seguintes artigos:

• Debug de Aplicações em C (António Pedro Cunha)
• Arduino: Accionamento e Controlo de Servos Via Teclado (Nuno Santos)
• Introdução ao Web2py (António Santos)
• Listas Simplesmente Ligadas e Exemplo de Implementação em C (Cristiano Ramos)
• Pascal - Tipos de Dados Variant e Tipos Genéricos (Igor Nunes)
• Visual(not)Basic - Eventos e handlers (Sérgio Ribeiro)
• Windows Server 2012 - Curso Completo (Nelson Belo Lima)
• Redes de Computadores - Curso Completo (António Santos)
• Implementando publicidade usando Nokia NAX em aplicações Windows Phone (Sara Silva)
• Navicat Premium 11 (Nelson Belo Lima)
• Dispositivo Android: Ser ou Ser reconhecido pela Google (Rita Peres)

Web Article - How Maven find dependency JARs while building Java Project

"One of the most attractive feature of Apache Maven framework it to manage dependency JARs, but do you know, How Maven finds dependency JAR while building Java project?"

Read more here

Hibernate ORM 4.2.5.Final

Hibernate ORM 4.2.5.Final was just released.

Please see the full changelog for more information:
https://hibernate.atlassian.net/secure/ReleaseNote.jspa?projectId=10031&version=13953

JBoss Nexus: https://repository.jboss.org/nexus/content/groups/public/org/hibernate
Maven Central: http://repo1.maven.org/maven2/org/hibernate/hibernate-core (should update in a couple of days)
SourceForge: https://sourceforge.net/projects/hibernate/files/hibernate4
Downloads: 4.2.5.Final ZIP, 4.2.5.Final TGZ- 

See more at: http://planet.jboss.org/post/4_2_5_final#sthash.urHi3KPW.dpuf

Configure and Create Maven test application

"Maven is the java build tool that helps the create enterprise application in the standard directory structure and resolve the dependency to compile and run the application. Maven is used to create deployable artifact. It is project management tool that provide build capabilities."

Full article here

Free Java EE 6 Video Tutorial

Free online tutorial about JPA, EJB 3, JSF, JMS, JAX-RS and CDI. The tutorial starts from the very basics and teaches Java EE, API by API/feature by feature, through a series of progressive code examples that build on the one before it. The tutorial uses GlassFish, NetBeans and MySQL.

http://www.programming-simplified.com/index.html

55 New Features in Java SE 8

This talk is on 55 new features in Java 8.

Video producer: http://www.devoxx.co.uk

Source

The Java EE 7 Platform: Boosting Productivity and Embracing HTML5

About movie:
In this code-based presentation Oracle's Arun Gupta walks you through what's new in Java EE 7 and will show you how to boost productivity by taking advantage of certain APIs, like Processing, Caching, and much more!

Java EE 7 Tutorial

Versions:

• PDF
• HTML

Java EE 7 - Articles

A large collection of articles about Java EE 7 and its sub-specs, such as JSF 2.2, JPA 2.1, JMS 2.0, CDI 1.1, etc. The full articles here https://javaee7.zeef.com/.

11º Meeting PT.JUG

Apresentações do 11º meeting realizado a 3 de Julho de 2013.

• Apache Camel
  Tiago Salvado
• JMockit & Hamcrest – Ferramentas para testes
  Hugo Marcelino

Revista Programar - 41ª Edição - Junho 2013

Nesta edição como artigo de capa, um artigo sobre Introdução ao Java EE e Java Web de José Marques. Nesta 41ª edição pode ainda encontrar os seguintes artigos:

• Programação em C: const (António Pedro Cunha)
• Jogo da Vida (Rita Peres)
• JBoss Aplication Server 7 (Mauricio Magnani Jr)
• PHP: Uma framework “from scratch” (Parte 1) (Ricardo Perre)
• C# - Observable vs. Task (Paulo Morgado)
• Visual(not)Basic - Operator Overloading (Sérgio Ribeiro)
• I Evento Presencial Programar
• Android – Introdução ao Desenvolvimento de Aplicações (José Marques)
• C# 5.0 com Visual Studio 2012 (Ricardo Perre)
• NetPonto - Telerik RadControls - Rápida implementação da página Sobre para Windows Phone Apps (Sara Silva)
• Game Salad (Rita Peres)

Download

Java EE 7 - Entreprise JavaBeans 3.2

About video: Enterprise JavaBeans is an architecture for the development and deployment of component-based applications. This webinar is an overview of the EJB 3.2: changes to the SFSBs and MDBs, security, TimerService API; optional features, and more.

Java EE 7 - Bean Validation 1.1

About video:
Bean Validation standardizes constraint declarations and validation for the Java platform.
In this webinar we will discuss via examples method-level validation, CDI integration and more in Bean Validation 1.1.

Java EE 7's JSF 2.2, Interceptors 1.2, and JPA 2.1 Intro Videos

Java EE 7 Launch Webinar sessions.

Here's the JSF 2.2 session:


Here's the Interceptors 1.1 session:


Here's the JPA 2.1 session:

Source

EJB transactions: going deeper

In below article the autor explains in some words how works EJB technology, particularly about EJB transaction management
Full article

@Stateless  
public class MyFirstEjbBean implements MyFirstEjb {  
  
  @EJB  
  private MySecondEjb other;  
  
  public void firstEjb(){  
  
    other.secondEjb();  
  }  
}  
  
  
@Stateless  
public class MySecondEjbBean implements MySecondEjb {  
  
  public void secondEjb(){  
  
  }  
} 

Hibernate - Callback methods

Callbacks Methods: It is often useful for the application to react to certain events that occur inside the persistence mechanism.

Type	Description
@PrePersist	Executed before the entity manager persist operation is actually executed or cascaded. This call is synchronous with the persist operation.
@PreRemove	Executed before the entity manager remove operation is actually executed or cascaded. This call is synchronous with the remove operation.
@PostPersist	Executed after the entity manager persist operation is actually executed or cascaded. This call is invoked after the database INSERT is executed.
@PostRemove	Executed after the entity manager remove operation is actually executed or cascaded. This call is synchronous with the remove operation.
@PreUpdate	Executed before the database UPDATE operation.
@PostUpdate	Executed after the database UPDATE operation.
@PostLoad	Executed after an entity has been loaded into the current persistence context or an entity has been refreshed.

Example

@Entity
@EntityListeners(class=Audit.class)
public class Cat {
    @Id private Integer id;
    private String name;
    private Calendar dateOfBirth;
    @Transient private int age;
    private Date lastUpdate;
    //getters and setters

    /**
     * Set my transient property at load time based on a calculation,
     * note that a native Hibernate formula mapping is better for this purpose.
     */
    @PostLoad
    public void calculateAge() {
        Calendar birth = new GregorianCalendar();
        birth.setTime(dateOfBirth);
        Calendar now = new GregorianCalendar();
        now.setTime( new Date() );
        int adjust = 0;
        if ( now.get(Calendar.DAY_OF_YEAR) - birth.get(Calendar.DAY_OF_YEAR) < 0) {
            adjust = -1;
        }
        age = now.get(Calendar.YEAR) - birth.get(Calendar.YEAR) + adjust;
    }
}

public class LastUpdateListener {
    /**
     * automatic property set before any database persistence
     */
    @PreUpdate
    @PrePersist
    public void setLastUpdate(Cat o) {
        o.setLastUpdate( new Date() );
    }
}

Source

Java EE 7 is final

Here is what EE 7 looks like as of today

The complete specification now contains 34 individual specifications.

Specification	JSR	Version	Java.net Project
Java Platform, Enterprise Edition	342	7	javaee-spec
Managed Beans	342	1.0
Java EE Web Profile (Web Profile)	342	1.0
Java API for RESTful Web Services (JAX-RS)	339	2.0	jax-rs-spec
Web Services for Java EE	109	1.4
Java API for XML-Based Web Services (JAX-WS)	224	2.2	jax-ws
Java Architecture for XML Binding (JAXB)	222	2.2	jaxb
Web Services Metadata for the Java Platform	181	2.1
Java API for XML-Based RPC (JAX-RPC) (Optional)	101	1.1	jax-rpc
Java API for XML Registries (JAXR) (Optional)	93	1.0
Servlet	340	3.1
JavaServer Faces(JSF)	344	2.2	javaserverfaces
JavaServer Pages (JSP)	245	2.3
JavaServer Pages Expression Language (EL)	341	3.0	el-spec
A Standard Tag Library for JavaServer Pages (JSTL)	52	1.2	jstl
Debugging Support for Other Languages	45	1.0
Contexts and Dependency Injection for the Java EE Platform (CDI)	346	1.1	github.com
Dependency Injection for Java (DI)	330	1.0
Bean Validation	349	1.1	http://beanvalidation.org
Enterprise JavaBeans (EJB)	345	3.2	ejb-spec
Java EE Connector Architecture (JCA)	322	1.7
Java Persistence (JPA)	338	2.1	jpa-spec
Common Annotations for the Java Platform	250	1.2
Java Message Service API (JMS)	343	2.0
Java Transaction API (JTA)	907	1.2	jta-spec
JavaMail	919	1.5	javamail
Java Authentication Service Provider Interface for Containers (JASPIC)	196	1.1	jaspic-spec
Java Authorization Contract for Containers (JACC)	115	1.5	jacc-spec
Java EE Application Deployment (Optional)	88	1.2
Java Database Connectivity (JDBC)	221	4.0
Java Management Extensions (JMX)	255	2.0	openjdk
JavaBeans Activation Framework (JAF)	925	1.1
Streaming API for XML (StAX)	173	1.0	sjsxp
Java Authentication and Authorization Service (JAAS)		1.0
Interceptors	318	1.2
Batch Applications for the Java Platform	352	1.0	jbatch
Java API for JSON Processing	353	1.0	json-processing-spec
Java API for WebSocket	356	1.0	websocket-spec
Concurrency Utilities for Java EE	236	1.0	concurrency-ee-spec

Source

Setup of Dynamic Web Project using Maven

Good article that show how to create a Dynamic Web Project using Maven.

Full article here.

In same blog i found other interesting article about
Spring JPA Data + Hibernate + MySQL + MAVEN that show how we can develop a web-applications with the help of Spring MVC.

Live Webcast - Introducing Java EE 7 - 12, 13 June 2013

AGENDA
Keynote Address

• With speakers from Oracle, IBM, Infosys and JUGs, including:
• Hasan Rizvi, Executive Vice President, Oracle Fusion Middleware and Java, Oracle
• Cameron Purdy, Vice President, Development, Oracle
• Arun Gupta - Java EE & GlassFish Evangelist, Oracle
• Linda DeMichiel, Specification Lead for Java Platform, Enterprise Edition 7, Oracle

On-Demand Breakout Sessions

• 15 sessions featuring demos and details about each new JSR

Live Chat with Java Experts

• Hour-long chats on the following topics:
• Scalable, Dynamic HTML 5
• Increasing Productivity
• Meeting Enterprise Demands

More information here

Mockito Javadoc

Mockito Javadoc

The Java EE 6 - Using Scopes

Using Scopes

For a web application to use a bean that injects another bean class, the bean needs to be able to hold state over the duration of the user’s interaction with the application. The way to define this state is to give the bean a scope. You can give an object any of the scopes described in following table, depending on how you are using it.

Scope	Annotation	Duration
Request	@RequestScoped	A user’s interaction with a web application in a single HTTP request.
Session	@SessionScoped	A user’s interaction with a web application across multiple HTTP requests.
Application	@ApplicationScoped	Shared state across all users’ interactions with a web application.
Dependent	@Dependent	The default scope if none is specified; it means that an object exists to serve exactly one client (bean) and has the same lifecycle as that client (bean).
Conversation	@ConversationScoped	A user’s interaction with a JavaServer Faces application, within explicit developer-controlled boundaries that extend the scope across multiple invocations of the JavaServer Faces lifecycle. All long-running conversations are scoped to a particular HTTP servlet session and may not cross session boundaries.

The first three scopes are defined by both JSR 299 and the JavaServer Faces API. The last two are defined by JSR 299.

Source