An applet is a special kind of Java program that a browser enabled with Java technology can download from the internet and run. An applet is typically embedded inside a web-page and runs in the context of the browser. The best support isn’t a browser, but the standalone program appletviewer. In general you want to write applets […]
Java’s layout managers provide a level of abstraction to automatically map your user interface on all window systems. The UI components are placed in containers. Each container has a layout manager to arrange the UI components within the container. Layout managers are set in containers using the setLayout(LayoutManager) method in a container. Java GUI reside in […]
The JavaServer Pages Standard Tag Library (JSTL) is a standard set of commonly used tag libraries. That is, JSTL encapsulates core functionality common to many JSP applications. For example, instead of iterating over lists using a scriptlet or different iteration tags from numerous vendors, JSTL defines a standard set of iteration tags. JSTL has tags for common […]
This tutorial is for the person who has basic Java programming skills but does not know much about Java object-oriented and GUI programming. This tutorial starts with GUI programming in Java and then moves on to discuss event handling, thread Programming, collection framework and network programming in Java.
JDBC provides Java applications with access to most database systems via SQL. The architecture and API closely resemble Microsoft’s ODBC. JDBC classes are contained within the java.sql package. There are few classes and several interfaces. [Download Java Programming with Oracle JDBC]
JDBC is an interface to communicate with a relational database. It treats database […]
Server is an application that runs on the host computer that provides a means of connection and useful information once a connection is established. Client is an application(s) running on different computer(s) that seek to establish a connection and request computation/ information from the server.
A deadlock is a situation where in two or more competing actions are each waiting for the other to finish, and thus neither ever does. In computer science, Coffman deadlock refers to a specific condition when two or more processes are each waiting for the other to release a resource, or more than two processes are waiting for resources […]
Race conditions occur when multiple, asynchronously executing threads access the same object (called a shared resource) returning unexpected (wrong) results. Threads often need to share a common resource, for example a file, with one thread reading from the file while another thread writes to the file. They can be avoided by synchronizing the threads which access the […]
Many programs contain code segments that are more or less in dependent of one another, and that may execute more efficiently if the code segments could be overlapped in time.
What is multitasking?
There are two types of multi-tasking programs.
Process based: Executing multiple programs/processes at the same time
Thread based: Single program can have many threads […]
You can draw strings, lines, rectangles, ovals, arcs, polygons, and polylines, using the methods in the Graphics class.
In order to draw things on a component, you need to define a class that extends JPanel and overrides its paintComponent method to specify what to draw.
You can call repaint() when […]
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