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    • Exception Handling

      Exception Handling

      There are two kinds of exceptions, namely, synchronous exceptions and asynchronous exceptions. Errors such as “out-of-range index” and “over-flow” belong to the synchronous type exceptions. The errors that are caused by events beyond the control of the program (such as keyboard interrupts) are called asynchronous exceptions. The proposed exception handling mechanism in C++ is designed

    • Java Servlet

      Java Servlet

      A Java Servlet is the Java technology used to extend and improve Web server functionality. Servlets are able to provide a platform independent way to build web-based applications founded upon components without the performance limitations found with comparable CGI applications. Since Java Servlets are platform and server independent, they can be deployed across the full

    • How to Sign a Java Applet

      How to Sign a Java Applet

      Java applets are designed to run in a restricted environment known as Sandbox. This confinement helps avoid malicious activities and breach of security from intentionally harmful applets. Therefore, an applet cannot access or communicate with any outside-the-sandbox resource unless granted permission by the user. The trustworthiness of an applet is showcased by signing it with

    • Doubly Linked List

      Doubly Linked List

      In a doubly linked list, also called a two-way list, each node is divided into three parts: The first part, called the previous pointer field, contains the address of the preceding element in the list. The second part contains the information of the list. The third part, called the next pointer field, contains the address

    • Display Messages using Flashdata in CodeIgniter

      Flashdata is a functionality in the CodeIgniter framework that lets you make required data available for the next server request. It makes use of session, but unlike normal session behavior, the passed data is available only for the next server request and is automatically cleared thereafter. Therefore, Flashdata can be very useful in displaying notifications

    • Postfix

      Postfix

      The sum of X and Y is written as X+Y where + is the operator while X and Y are the operands. We have always learnt to write the sum of two numbers as X + Y; this notation is know as infix. Here, we’ll be talking about the postfix notation of representing arithmetic operations.

    • Depth First Search Algorithm

      Depth First Search Algorithm

      A DFS algorithm, as the name implies, is used to search deeper in the graph, whenever possible. The edges are explored, out of the most recently discovered vertex v that still has unexplored edges leaving it. When all of v's edges have been explored, the search backtracks to explore edges leaving the vertex from which

    • Deleting an Element from a Doubly Linked List

      Deleting an Element from a Doubly Linked List

      To delete an element from the list, first the pointers are set properly and then the memory occupied by the node to be deleted is deallocated (freed). Deletion in the list can take place at the following positions. At the beginning of the list At the end of the list After a given element Before

    • JNI (Java Native Interface)

      JNI (Java Native Interface)

      The JNI (Java Native Interface) is a layer of Java that permits code executing or running in the JVM (Java Virtual Machine) to invoke and to be called by native libraries and applications written in other languages. The JNI is most commonly used with the C++, C, and Assembly programming languages. Typically, code developers will

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