Core Java, JSP, Servlet, Struts

What is a poison message? A poison message is simply a message that the receiving MDB application is unable to process. The message coul...

A hash table supporting full concurrency of retrievals and high expected concurrency for updates. Few important points are below: Conc...

Enhanced for-loops can’t be used automatically in data structures that we implement. Then what do we do? This is where Iterable interface ...

Often, you will want to cycle through the elements in a collection. For example, you might want to display each element. The easiest way...

Externalizable provides us writeExternal() and readExternal() method which gives us flexibility to control java serialization mechanism in...

Serializable interface exists in java.io   package   and forms core of java serialization mechanism. It doesn't have any method and a...