Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial, we will go through an introduction to Object Oriented programming concepts. We will learn the concept of a Class and an Object in an Object Oriented world by taking help of real life analogy. For our readers who are unable to access the Video Tutorial!!! This tutorial will take you through […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial we will learn the concept of Just in time compiler (or, just in time compilation approach). This tutorial will cover the working of a JVM in detail and the two approaches followed by Java i.e interpretation and Just in time compilation ( JIT) For our readers who are unable to access […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial we will learn how Java works and what is a Java virtual Machine. For our readers who are unable to access the Video Tutorial!!! In this tutorial we will discuss HOW JAVA WORKS??? right from writing the Java Program till its execution… When we write a Java Program using notepad or some […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial, we will learn how to use Eclipse IDE for creating our first Java program i.e HelloWorld. For our readers who are unable to access the Video Tutorial!!! For writing our first Java Program using Eclipse IDE : 1) Go to the folder where you unzipped Eclipse contents and double click on the eclipse […]
Ankush Gorav CORE JAVA, Video Tutorials
In this tutorial, we will learn how to download and install Eclipse IDE (integrated development environment) for writing and running Java programs. For our readers who are unable to access the Video Tutorial!!! Eclipse IDE is an excellent editor which we use to write Java Programs.Any other text editor for writing Java Programs may be […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial, we will create our first Java program ( HelloWorld Java Program ) and run using javac and java commands on windows command prompt. Also, we will understand why we set PATH Environment variable with the Java installation path upto bin directory and run a Java program without Eclipse IDE ( using Microsoft […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial, we will set up the PATH environment variable on your computer with the JAVA installation path. For our readers who are unable to access the Video Tutorial!!! Setting up the PATH Environment variable : 1) Click on start right click on My Computer and choose Properties. 2) Then go to Advanced […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial, we will learn how to setup development environment for writing programs using Java programming language i.e installing JDK ( java development kit ) on our computer. For our readers who are unable to access the Video Tutorial!!! For setting up development environment for writing programs in Java following steps need to […]
Ankush Gorav CORE JAVA, Video Tutorials
In this video tutorial, we will learn about the Basics of Java programming language. We will see the complete overview for the Java programming language. For our readers who are unable to access the Video Tutorial!!! Java is a programming language based on OBJECT ORIENTED CONCEPTS and is used to build web applications,desktop applications, mobile […]
JAXB stands for Java Architecture for XML Binding and is used to convert a XML to JAVA objects and vice versa. So, there are two important operations you perform using JAXB – Converting a Java object to XML – Marshalling. Converting a XML file to Java object – UnMarshalling. Its the Java’s standard way for Marshiling […]
Ankush Gorav CORE JAVA executable JAR file, executable JAR files
Following example would show you how to create and execute an executable JAR file. 1. Create a JAVA application and compile it. For instance, I have taken a simple example of a Hello World program below: 2. Create a text file named Manifest.txt with the following contents [Please note that the Manifest.txt file must end with a […]
Ankush Gorav CORE JAVA Executable JAR, executable JAR file, JAR file, JAR Files
JAR stands for Java Archive – which means you can store many files (like .class, image, XML, .properties files etc) in one. Following points explain JAR files in detail. 1. A JAR file is used to package and distribute a set of java classes as a library (API’s) to others. This will help giving a […]
Ankush Gorav CORE JAVA Aggregation, Association, Composition
These terms are the building blocks of Object Oriented programming language (OOPS) concepts and should be known to a programmer working in OOPS as a must thing. But as a matter of fact, not many people are aware of these terms. Its my sincere effort to bring forth the simplicity of few of OOPS […]
Software bugs costs us a lot in terms of time and money. Whenever you write a piece of code you tend to test it; and you do so in number of ways: One of the most and commonly adopted practices by almost all of us is: You test the newly written code once on the […]
This is one of the most famous questions which interviewers consider in an interview. Before we actually see the differences, let me give you a brief description of both. ArrayList is the implementation of List Interface. The Following table summaries the characteristics of ArrayList. It is not synchronized ( so, this is not thread-safe). ArrayList class is implemented using […]
This is one of the most famous questions which interviewers consider in an interview. Before we actually see the differences, let me give you a brief description of both. HashMap is the implementation of Map Interface, which maps a key to value. Duplicate keys are not allowed in a map. The Following table summaries the characteristics of HashMap. It allows […]
A collection allows a group of objects to be treated as a single unit. Java objects can be stored, retrieved, and manipulated as elements of collections. Here’s the ready list of all the core collection interfaces available in Java with their brief description. Collection — It’s the root of the collection hierarchy. A basic interface that defines […]
Most often we deal with logging in our projects and come across to different log levels but tend to forget the role and definition of each. In this post I will refresh your memories by describing different levels of logging in log4j and their usage. Log4j has three main components: loggers, appenders and layouts. These three types of components work together to […]
It’s a process which converts compiled JAVA byte code* to machine code. JVM is the cornerstone of the Java Platform and includes wide range of responsibilities- 1. Making JAVA the platform independent language. 2. Protects users from malicious programs. 3. Generate the compiled code which is smaller in size. *Byte code is an intermediary language […]
Ankush Gorav CORE JAVA, Others IBATIS, MYBATIS
Data mapping seems to be a challenging task around for years. IBATIS is one of the very popular frameworks like hibernate, JPA (java persistance API) etc. to do so. In this post, you will learn about what IBATIS is? and why you should use it? What you achieve if you are using IBATIS: Your application […]
