JAVA is a fundamental course for candidates willing to make their careers in software field. This course covers concept of object oriented programming. After completing this course candidates are able to make program using class and methods and CUI application.
The Java Syllabus will be as follows…..
Basics of Java
AWT and EventHandling
Applets execute under the control of a web browser. Netscape and Internet Explorer impose a security restriction, that prohibits access to the local filesystem by applets. While this may cause frustration for developers, this is an important security feature for the end-user. Without it, applets would be free to modify the contents of a user's hard-drive, or to read its contents and send this information back over a network.
Digitally signed applets can request permission to access the local filesystem, but the easiest way around the problem is to read and write to remote files located on a network drive. For example, in conjunction with a CGI script or servlet, you could send HTTP requests to store and retrieve data.
Custom graphical components can be created by producing a class that inherits from java.awt.Canvas. Your component should override the paint method, just like an applet does, to provide the graphical features of the component.
This is a very common question - after all, there aren't any SocketReaders, or PipedReaders. You need something to bridge the gap between a Reader, and an InputStream. That's where InputStreamReader comes into play.
InputStreamReader is a reader that can be connected to any InputStream - even filtered input streams such as DataInputStream, or BufferedInputStream. Here's an example that shows InputStreamReader in action.
// Connect a BufferedReader, to an InputStreamReader which is connected to
// an InputStream called 'in'.
BufferedReader reader = new BufferedReader ( new InputStreamReader ( in ) );
You can do the same with an OutputStream to a Writer (see OutputStreamWriter for more information).
The most common mechanism for this is the callback, where one class calls the method of another to notify it of an action or event. The class to be notified defines methods that will respond to specific events, such as when a mouse is clicked, dragged, or released. The AWT makes heavy use of this, with Listener interfaces. A class implements the event handling methods of a listener, and can then be registered with a component that generates these types of events. Classes that are event sources provide methods which register a listener, and at a later time when the event is generated, will invoke listener methods. The Abstract Windowing Toolkit (AWT) and Swing APIs would be a good place to start, to see if this suits your needs.
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