In this example,we will have a look at and understand the concept of RecordReader component of Apache Hadoop. But before digging into the example code, we would like look at the theory behind the InputStream and RecordReader to better understand the concept. 1. Introduction To better understand RecordReader, we have to understand the InputFormat first. InputFormat defines how the data ...

The Apache Tomcat® software is an open source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies Table Of Contents 1. The tools 2. Introduction 3. Prerequisites 4. Launch Tomcat 5. Tomcat manager User 6. Launch the manager 7. Manager Application 8. Create a test application 9. Create a deployable war file for our application ...

In this article we will see how we can update Eclipse. Eclipse is the most popular Integrated Development Environment (IDE) used by Java developers. The Eclipse platform itself is structured as subsystems which are implemented in one or more plug-ins.  The subsystems are built on top of a small runtime engine. The term Workbench refers to the desktop development environment. The ...

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. It automates the process of checking Java code to spare humans of this boring (but important) task. This makes it ideal for projects that want to enforce a coding standard. Checkstyle is highly configurable and can be made to support almost any coding standard. ...

In the article we will have a look at Hadoop Sequence file format. Hadoop Sequence Files are one of the Apache Hadoop specific file formats which stores data in serialized key-value pair. We have look into details of Hadoop Sequence File in the subsequent sections. 1. Introduction Apache Hadoop supports text files which are quite commonly used for storing the ...

A JWindow is a container that can be displayed anywhere on the user’s desktop. It does not have the title bar, window-management buttons, or other trimmings associated with a JFrame, but it is still a “first-class citizen” of the user’s desktop, and can exist anywhere on it. 1. Introduction The JWindow component contains a JRootPane as its only child. The ...

Recently, Git has been popularly used among developers. Compared with other Version Control Systems, such as SVN (Apache Subversion) and CVS(Concurrent Version System), it is more powerful by its distributed nature, fast operation and branch handling mechanism. The distributed system makes it easy and efficient for multiple developers work together towards the same project. 1. Introduction Meanwhile, Git works fast with its lightweight operations. Also ...

Apache Tomcat and the Apache httpd server, were created for two different tasks but sometimes We can confuse the functionality of each other just because they could solve the same problems. 1. The tools Apache Tomcat 8 Apache Httpd server 2.4 2. Introduction In this article we are going to discover some key differences between Tomcat and httpd servers and ...

1. Introduction Java is an object Oriented Programming Language, and as such concepts like Encapsulation and Abstraction sits at the heart of it. However, since Java is a bit-too-much Object Oriented at its genome structure, that often times than not, it adds a lot of verbosity and boiler plate to its language constructs. Even simple, trivial requirement of creating an ...

This is a JavaFX Color Example. In JavaFX, you can specify color for text and background color for regions. You can specify a color as a uniform color, an image pattern, or a color gradient. A uniform color uses the same color to fill the entire region. An image pattern lets you fill a region with an image pattern. A ...