Docker is a technology that provides the tools for you to build, run, test, and deploy distributed applications that are based on Linux containers. To install Docker on an Amazon EC2 in… Read More

Spring makes it easy to create Java enterprise applications. It provides everything you need to embrace the Java language in an enterprise environment, with support for Groovy and Kotlin as… Read More

The cyber security industry is constantly growing. Organizations of all types are in an urgent need of hiring IT security professionals to protect any data breaches. There is a huge dem… Read More

Project management plays a very crucial factor in the organization's success as this is responsible for the project’s success and failure. This is the reason that organizations ar… Read More

AWS: The Highest Paying IT CertificationAWS certifications, designed to demonstrate the skills in designing and managing software solutions on Amazon’s ultra-popular cloud platform, is… Read More

Benefits Of HTML, CSS, And Their Updated Versions In YourBusinessHTML (the Hypertext Markup Language) and CSS (Cascading Style Sheets) are the basis of building web pages and web application… Read More

The CompTIA CSA+ certification is an international vendor-neutral Cybersecurity credential designed for IT professionals. The CompTIA CSA+ certification gives hands-on experie… Read More

Scrum is one of the most popular Agile methodologies. It is an adaptive, iterative, fast, flexible, and effective methodology designed to deliver significant value quickly and throughout a p… Read More

Securing RESTful Web ServicesThis post describes how to secure Web services that conform to the Representational State Transfer (REST) architectural style using Java API for RESTful Web Serv… Read More

Gain hands-on expertise in 1Z0-808 and 1Z0-809 exam with Java Live Lab. Live-Lab is a real computer equipment, networked together and conveniently accessible over the internet using vir… Read More

Five IT Certifications that will take your Tech Career a step forwardWant to know which IT certifications will enhance your job profile and will take your tech career a step forward? Here, w… Read More

Other Modifiers for Members in JavaCertain characteristics of fields and/or methods can be specified in their declarations by the following keywords:static Members: The declaration of static… Read More

Member Accessibility Modifiers in JavaBy specifying member accessibility modifiers, a class can control what information is accessible to clients (i.e., other classes). These modifiers help… Read More

The five most desired certifications of 2017Being certified is the foolproof method to enhance your career a skills in the Information Technology industry. If you are one of those who consid… Read More

Arrays in JavaAn array is a data structure that defines an indexed collection of a fixed number of homogeneous data elements. All elements in the array have the same data type. A positi… Read More

Java Source File StructureA Java source file can have the following elements that, if present, must be specified in the following orderAn optional package declaration to specify a package na… Read More

Java Language FundamentalsIdentifiersA name in a program is called an identifier.Identifiers can be used to denote classes, methods, variables, and labels.In Java an identifier is composed o… Read More

Basic elements of a Java ProgramThe basic elements of a Java application are introduced in this post.Basic elements of a Java Program - ClassA class denotes a category of objects, and acts a… Read More

Introduction to JavaJava is a general-purpose computer programming language that is concurrent, class-based and object-oriented. Java is intended to let application developers "write once, r… Read More

What is MongoDB?MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you needMongoDB is a free and open-source cross-platform… Read More

Introduction to Node.js Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and effici… Read More

3 COMPTIA CERTIFICATION IN DEMANDIn 2016, more than 5.2 million IT jobs contributed to the U.S. economy with an additional 2 million new job postings throughout the year. Peruse those posts… Read More

Domain Model in HibernateThe application domain model is the central character in an ORM. Domain Model are the classes we would be mapping in our application. These domain model classes need… Read More

Hibernate Architecture OverviewHibernate, is an ORM solution, which sits between the Java application data access layer and the Relational Database. The Java application makes use of the Hib… Read More

Spring AOP – AdviceSpring AOP Advice is the action taken by an aspect at a particular join point. Different types of advice include Around adviceBefore adviceAfter adviceMany AOP… Read More

Aspect Oriented Programming with SpringAspects enable the modularization of concerns such as transaction management that cut across multiple types and objects. One of the key components of S… Read More

Spring DependenciesAn application will have certain objects that work together to present what the end-user sees as a coherent application. We can define a number of bean definitions that ar… Read More

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

Advantage of Hibernate over JDBCJDBC  Hibernate  With JDBC, developer has to write code to map an object model's data to a relational data model and its corresponding database… Read More

Apache JMeterApache JMeter may be used to test performance both on static and dynamic resources, Web dynamic applications. It can be used to simulate a heavy load on a server, group of… Read More

Spring ModulesThe Spring Framework contains a lot of features, which are well-organized in about twenty modules. These modules can be grouped together based on their primary features into&nb&hell…Read More

Spring FrameworkThe Spring Framework is an open source application framework for the Java platform which aims to make J2EE development easier. Spring framework offers a lot of freedom to Jav… Read More

CompTIA A+ 220-901 - Pearson: CompTIA A+ 220-901 Cert Guide (Course & Labs)Gain hands-on expertise in CompTIA A+ certification exam by CompTIA A+ 220-901 course and performance-based lab… Read More

Continuous Integration Continuous Integration is a software development practice where members of a team integrate their work frequently, usually each person integrates at least daily - lead… Read More

Constructors in JavaA constructor in Java is a block of code similar to a method that’s called when an instance of an object is created. A constructor is a special method tha… Read More

JDBC : The StepsIn this article we are highlighting the steps to connect and process data in JDBC. For this article we are using Oracle Database. For other databases the drivers will vary bu… Read More

JDBC DriversA JDBC driver is a software component which enables a Java application to interact with a database. To connect with individual databases, JDBC requires drivers for each database… Read More

Java Database ConnectivityJava JDBC is a java API to connect and execute query with the database. JDBC API uses jdbc drivers to connect with the database.Java Database Connectivity (JDBC) is… Read More

Session BeanA session bean encapsulates business logic that can be invoked programmatically by a client over local, remote, or web service client views. The session bean performs w… Read More

Enterprise Beans Enterprise beans are Java EE components that implement Enterprise JavaBeans (EJB) technology. Enterprise beans run in the EJB container. The EJB container provides system-le… Read More

Four Things to Know About (ISC)² CCSP ExamCertified Cloud Security Professional (CCSP) is the certification introduced by (ISC)²; in response to the rising popularity of the cloud… Read More

Prototype Design Pattern in JavaIntentSpecify the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype.MotivationWhen we talk about obje… Read More

What is GITGit is the most widely used modern version control system in the world today. Git is a  actively maintained open source project. A lot of software projects rely on Git for ve… Read More

What is Version Control?Version control systems are software tools that help a software development team manage changes to source code over time. Version control software keeps track of ever… Read More

The Map InterfaceA Map is an object that maps keys to values. A map cannot contain duplicate keys. Each key can map to at most one value. The Map interface includes… Read More

The List InterfaceA List is an ordered Collection, sometimes called a sequence. Lists may contain duplicate elements. In addition to the operations inherited from Co… Read More

The Set InterfaceA Set is a Collection that cannot contain duplicate elements. The Set interface contains only methods inherited from Collection… Read More

Collection InterfacesThe core collection interfaces encapsulate different types of collections. These interfaces allow collections to be manipulated independently of the details of… Read More

Collections in JavaA collection is an object that groups multiple elements into a single unit. Collections are used to store, retrieve, manipulate, and communicate aggregate data… Read More

Exceptions in Java An exception in Java is an event, which occurs during the execution of a program that disrupts the normal flow of the program.When an error occurs within a… Read More

Spring - Bean DefinitionThe objects that form the backbone of application and that are managed by the Spring IoC container are called beans. A bean is an object that is instantiated, assembl… Read More

JSP Implicit ObjectsJSP Implicit Objects are the Java objects that the JSP Container makes available to developers in each page and developer can call them directly without declaring them ex… Read More

JSP LifecycleThe lifecycle of a JSP is the entire process from its creation till the destruction which is similar to a servlet life cycle with an additional step, which translates the JSP in… Read More

5 CERTIFICATION COURSES TO BOOST YOUR SALARYEveryone's looking for ways to advance his or her career. This is particularly true in today's technology world where everything changes at a rapi… Read More

A servlet is a Java programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model… Read More

Bean scopes in SpringWhen we create a bean definition, we are actually creating is actual instances of the class defined by that bean definition. You can control the various dependencies and… Read More

It is possible to automatically let Spring framework resolve dependencies for the bean by inspecting contents of the BeanFactory. This is kown as Autowiring.  A BeanFactory is able to&n&hell…Read More

Default Methods in Java 8With the release of Java 8, it is now possible for an interface method to define a default implementation. This new capability is called the default method.Default m… Read More

Here are some of the common difference between PATH vs CLASSPATH in Java :1) PATHis an environment variable which is used to locate JDK binaries like "java" or "javac" command used to run ja… Read More

Java Platform, Standard Edition 8 is a major feature release. Java 8 contains a large number of new features. Although all are important, the three most important one are:Lambda expressionsT… Read More

Lambda expressions are a new and important feature included in Java SE 8. They provide a clear and concise way to represent one method interface using an expression. Lambda expressions also… Read More

Dependency Injection is a software design pattern that implements inversion of control for resolving dependencies. A dependency is an object that can be us… Read More

The org.springframework.beans and org.springframework.context packages are the two most important and fundamental packages in Spring. These packages provides the basis for Spr… Read More

Take the Java Quiz    1.     Which of the following is true Statement?A.    A class that is abstract cannot not be instantiatedB.  &nbs&hell…Read More

Here are the Answers Question Number Correct Answer 1 A,B,C 2 A, D 3 D 4 D 5 A 6 A 7 A 8 A 9 A 10 C 11 A 12 B 13 A… Read More

Java technology is both a programming language and a platform. The Java programming language is a high-level object-oriented language that has a particular syntax and style. A Java platform… Read More

Singleton Design Pattern in JavaIntentEnsure a class only has one instance, and provide a global point of access to it.MotivationIt's important for some classes to have exactly one instance… Read More

While using doGet() or doPost() prefer using doPost() because it is secured and it can send much more information to the server.GET or doGet()GET is the simples HTTP method, and its main pur… Read More

MVC stands for Model-View-Controller architecture. It promotes loose coupling between components by separating the functionality of displaying and maintaining of the data. It is often used b… Read More

Factory Design Pattern in JavaIntentDefine an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subcl… Read More

This post highlights the difference between JSP and Servlet technologies. Java Servlet technology and JavaServer Pages (JSP pages) are server-side technologies that become the standard way t… Read More

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Christopher Alexander  says, "Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such… Read More

Representational State Transfer (REST) is an architectural style that specifies constraints, such as the uniform interface, that if applied to a web service induce desirable properties, such… Read More

Object Relational Mapping (ORM) in computer science is a programming technique for converting data between incompatible type systems in object-oriente… Read More

Let us try to understand Design Patterns by TypeCreational PatternsCreational patterns provide a way to create objects while hiding the creation logic, rather than instantiating objects… Read More

Variable argument or varargs in Java Variable argument or varargs in Java allows you to write more flexible methods which can accept as many argument as you need. variable argument… Read More

The below post explains Object and ClassWhat is an Object? An object represents an entity, either physical, conceptual or software. Ø  Physical – Car or a Person Ø&n&hell…Read More

Static LoadingClasses are statically loaded in Java using newoperator.For Example :class MyClass {public static void main(String args[]) {Car c = new Car();}} A NoClassDefFoundException is t… Read More

To enter the current date and time , select a cell and in the cell enter =NOW()To enter the current Date in excel, select a cell and in the cellr =TODAY()The dates and/or times will be autom… Read More