CRUD Operations in Gaelyk- Part 2- Read Operation

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In our previous post we saw about implementing Create operation for creating a new entity and persisting to the database. In this article lets see how we can retrieve all the entities stored in the datastore. This would be the Read operation from the CRUD operations in Gaelyk also read: Groovy Tutorials Creating JSON using […]

CRUD Operations in Gaelyk- Part 1- Create Operation

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We have seen here and here on creating simple mashup using Gaelyk. In this series of articles lets see how we can implement CRUD operations in Gaelyk. CRUD Operations in Gaelyk would involve: Create an entity Read an entity Update an entity Delete an entity In this article we will look at creating an entity […]

Creating JSON using Groovy

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I wrote previously about parsing JSON in Groovy. In this article I show a simple example of creating JSON using Groovy. I had to learn about creating JSON using Groovy as I would be using JSON as the response format in the REST API which might be developed sometime in future. also read: Groovy Tutorials […]

Creating, Writing, Reading files using Java Files API of Java 7

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In our previous post we did get a taste of the power of the static APIs in the Java Files class and we managed to compare the code written without using the APIs in Java Files and with using the APIs in Java Files. also read: Java 7.0 Tutorials New Features in Java 7.0 G1 […]

New features in JDBC 3.0

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This article provides an introduction to the array of core new features available in JDBC 3.0. More specifically, the features ‘supporting save points’, ‘using parameter metadata’, ‘updating large objects’ and ‘auto generated keys’ are discussed. Wherever possible, to get a hang of it, relevant code samples have been provided in the respective sections. Download Source […]

JavaBeat Newsletter-2: New and noteworthy in Java Ecosystem

Interesting blog posts from JavaBeat: Exploring the enhancements to the java.nio package as part of Java 7 we wrote about watching a directory for changes and also looked at few methods in the Files class. Writing agents in Java to instrument the class files/byte code. Using Fork-Join framework introduced as part of Java 7. Getting […]

A peek into the Files utility which is part of java.nio package in Java 7

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We recently wrote about watching a directory using the new APIs introduced as part of Java 7. In this post let me throw some light on another class added to the java.nio package as part of Java 7 update- java.nio.file.Files. Another piece of information related to this is that complete java.nio.file package was added as […]

Java HelloWorld vs Scala HelloWorld

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As a first step into learning Scala and as one who is familiar with Java, let us compare the customary Helloworld programs in Java and Scala. You might already know that to run a Java program, there must be a public class with a┬ámain┬ámethod that takes one parameter, a String[ ], and has a void […]

Introduction to Java Agents

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In this article we will discuss about Java Agents. Java Agents are software components that provide instrumentation capabilities to an application. In the context of agents, instrumentation provides the capability of re-defining the content of class that is loaded at run-time. We will discuss this in more detail in the further sections. Download Source Code: […]

Implementing WatchService API in Java 7 to monitor the directory changes

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In Java 7 there were quite a lot of new things added to the File NIO package (java.nio)- there was a new java.nio.file package and java.nio.file.attribute package. Main highlights of the java.nio.file package are the following classes: Path: Its an object used to locate a file or directory in the file system. The value contained […]