A map is an interface in the java.util package which stores the association between key and its corresponding value. A map cannot contain duplicate keys; each key can map to at most one value Map differs from array in a way that we can store a value at a particular index in arrays but a [...]

Quartz is a full-featured, open source job scheduling service that can be integrated with, or used along side virtually any Java EE or Java SE application – from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of [...]

I found some useful information on internet about hibernate caching.I thought of sharing with everyone. High-volume database traffic is a frequent cause of performance problems in Web applications. Hibernate is a high-performance, object/relational persistence and query service. In many cases, second-level caching can be just what Hibernate needs to realize its full performance-handling potential. What [...]

While working I found one keyword Synthetic variable or method in java. Never heard of this before.I found some information on net and thought of sharing knowledge with everyone. If you want add something in this ,it would be really great. “Synthetic” attribute means a variable introduced by the compiler that doesn’t appear in the [...]

Dojo is the Open Source JavaScript Toolkit. It is tool for constructing dynamic web user interfaces. Dojo offers various widgets, utilities, higher IO (AJAX) abstraction etc.It is based on HTML and javascript. Dojo ups abstraction layer in a higher level. Dojo is sometimes advertised as AJAX framework. It is able to make AJAX requests with [...]

Marker interface is a interface which don’t have any mehtod.It is used to tag the implementing class based on their purpose.Marker interface is a Java interface which doesn’t actually define any fields. It is just used to “mark” Java classes which support a certain capability –the class marks itself as implementing the interface. For example, [...]

A type of inner class that has no name that you define right in the middle of a method (where static init blocks and instance init blocks count as methods). You define it, and create an object of that type as a parameter all in one line. An anonymous class is defined and instantiated in [...]

We can send mail through JavaMail Api through java code.I have read somewhere and thought of sharing with everyone. For using this code you need to JavaMail Api. Update Send email in text and html format Text and HTML format

Coding in JavaScript is always cumbersome.Programmer always find difficult debugging in JavaScript.There is one IDE which help javascript programmer.That is Aptana Studio. Aptana Studio is an open source integrated development environment (IDE) for building Ajax web applications. It includes support for JavaScript, HTML, DOM, and CSS with code-completion, outlining, JavaScript debugging, error and warning notification [...]

Abstract classes Abstract class is class which contain one or more abstract methods, which is implemented by sub classes. An abstract class can contain no abstract methods but also containe mehtod with body. Abstract classes are useful in a situation when some general methods should be implemented and specialization behavior should be implemented by subclasses.Abstract [...]