In this article we will study about DOM, what are its characteristics and properties and in addition, we will see practical examples of how to use the DOM in JavaScript. The Document Object Model or simply DOM is used by web browser to represent your Web page . When this pattern is altered by the use of Javascript it also …
Garbage Collection in Java
In this article we will cover the proper use of Garbage Collection. Let us learn how it works, and understand how to induce the Garbage Collection. The Garbage Collection is a tool coupled to the JVM, that performs cleanup of objects in memory (Read: static utility for objects) which are of no further use. Our application will constantly suffer …
Best Practices to Override toString Method in Java?
In this article to we will see how to override the toString method and what are the best practices in Java. Java provides a default implementation for the method toString through a class java.lang.Object which is inherited by all Java classes . However, what it returns is not very informative. Your returned value is composed …
Conditional Annotation in Spring 4.0
In this article I shall throw some light on one of the new features of Spring 4, Conditional Annotation Type. In the earlier versions of Spring you could handle conditions as below: In Spring with versions earlier to 3.1, you had to use Spring Expression Language (SPeL). With Spring 3.1, a new feature called profiles was introduced which …
Difference between Checked and Unchecked Exceptions in Java
In this article we will understand the differences between Checked and Unchecked Exceptions in Java language.Exception handling is essential to make a robust application, because the user does not want to see a stacktrace on your screen, but a well-written message indicating that only an error occurred. All the applications are subject to failures, and …
Dynamic Class Loading using Java Reflection
In this article we will discuss the concept of Java Reflection. Java Reflection is used to determine methods and attributes that will be used in a certain class at runtime.The Reflection in a nutshell, is used to determine methods and attributes that will be used in class (you do not know) at runtime. There are …
Difference between ArrayList, Vector and LinkedList in Java
This is a basic tutorial explaining about the APIs define under the collection package in Java. We encounter numerous questions from our readers to clarify the differences on these interfaces, we have come up with an tutorial to explain the key differences on these APIs. ArrayList, Vector and LinkedList, these confuse many beginners and even …
Design Patterns in Java
In developing a system, it is expected that some requirements are guaranteed, for example, performance, robustness, understanding, ease of reuse, modification, and use. The Design Patterns were created by the architect Christopher Alexander , in the 1970s. During this period the architect wrote two books: “Pattern Language” and “Timeless Way of Building“. These books were an example of …