JFC -- Expanding On A Solid Foundation
The JFC represents a significant introduction of new functionality to the Java development environment. The release of these classes with JDK 1.1 marks the beginning of major enhancements that will continue to improve the completeness and functionality of Java GUI applications.
Additions to the Java Foundation Classes will soon incorporate several features that further enhance a developer's ability to deliver scalable, commercial-grade applications. These new features will be made available to developers as they are completed over the next few months and then rolled into the next release of the JDK.
New features will include:
* Drag and Drop
* New High-Level Components
* Pluggable Look and Feel
* Java 2D API
* Accessibility Features for the Physically Challenged
* Additional new features continually being added
Drag and Drop
The Drag and Drop specification is available in the JDK 1.1 documentation and will soon be released as an update to the JFC. Drag and Drop (D&D) functionality as part of the core JFC class library means it will be available on all Java platforms in a consistent and supported fashion. It will significantly improve application interoperability by enabling D&D between Java applications and non-Java applications.
The generic, platform-independent implementation of D&D will enable objects to be dragged and dropped from one application to another. This update will support D&D between two Java applications, but more importantly, it will support D&D between a Java application and a native application. This means a user running the application on UNIX will be able to D&D to a Motif application and then run the same code on Microsoft-Windows and D&D to native application running there. D&D support makes it much easier to introduce Java applications to the enterprise.
New Java Foundation Classes Components
Working closely with Netscape and IBM, Sun will soon release an expanded set of components written in 100% Pure Java that will enable applications to be more fully integrated into the native environments. These new high-level components will be available on all platforms as part of the standard Java platform, thereby eliminating the need to download extra classes. In addition, new JFC components will carry two important attributes: all components will be both lightweight and peerless, thus facilitating a customizable look and feel without relying on native windowing systems or adding system overhead, and improving the deployment of applications will be simplified.
This comprehensive set of new high-level components will allow developers to create sophisticated professional-quality applets and applications using core JDK 1.1 functionality. The following components will be included with JFC:
Thursday, August 7, 2008
JFC
Saturday, May 17, 2008
Java Is Important To the Internet
The Internet helped catapult Java to the forefront of programming and Java in turn has a profound effect on the Internet. The reason is simple: Java expands the universe of objects that can move about freely in cyberspace. In a network, there are two broad categories of objects transmitted between the server and your personal Computer. Passive information and dynamic, active programs. For example, when you read your e-mail, you are viewing passive data. Even when you download a program, the program’s code is still only passive data until you execute it
However, there is a second type of object that can be transmitted to your computer. A dynamic, self-executing program. Such a program would be an active agent on the client computer, yet the server would initiate it. As desirable as dynamic, networked programs are, they also present serious problems in the areas of security and portability. Prior to Java cyberspace was effectively closed to half the entities that now live there. Java addressed these concerns and doing so, has opened the door to an exiting a new form of program.
Exception Handling:
An exception is an abnormal condition that arises in a code sequence at run time. In other words, an exception is a run-time error.
Exception-Handling Fundamentals:
A Java exception is an object that describes an exceptional (that is, error) condition that has occurred in a piece of code. When an exceptional condition arises, an object representing that exception is created and thrown in the method that caused the error.exceptions can be generated by the Java run-time system, or they can be manually generated by your code. Exceptions thrown by Java relate to fundamental errors that violate the rules of the Java language or the constraints of the Java execution environment. Manually generated exceptions are typically used to report some error condition to the caller of a method.
Wednesday, April 23, 2008
To address the needs of developers who wanted to create commercial applications that behave and appear identical across all platforms, Netscape created the Internet Foundation Classes (IFC). While IFC was a robust framework which delivered many important functionalities to the development community, Java developers demanded a single industry standard solution
As a result, Sun, Netscape, and IBM joined force to create Java Foundation Classes which provides a single GUI component and services solution. Java Foundation Classes builds on top of the existing AWT by integrating the best of new Sun technologies and Netscape's Internet Foundation Classes.
JFC -- A Comprehensive Set of Classes and Services
With JDK software version 1.1, the web-centric AWT GUI toolkit becomes part of a comprehensive set of GUI classes and services called The Java Foundation Classes. The Java Foundation Classes, a superset of the AWT, provides a robust infrastructure for creating commercial quality intranet and Internet applets and applications. The JFC is the result of developer and end user feedback and provides a significant advance in the development of client applications written in the Java programming language.
The JFC released in JDK 1.1 provides a wide range of new features that enable Java developers to be more productive while delivering applications that are fully integrated into the desktop environment. The JFC contains a powerful, mature delegation event model, printing, clipboard support, a lightweight UI framework and is 100% JavaBeans compliant. The new capabilities of JFC make Java a platform that will support the most sophisticated enterprise applications. Development of commercial applications using Java is now both possible and attractive.
Java and the AWT freed developers from being tied to a specific or proprietary platform for GUI application development and deployment. Today, the JFC provides the core set of classes and services enabling applications to scale from the desktop to the enterprise and across multiple platforms. Java developers will find the additions and improvements to the toolkit greatly enhance their ability to deliver 100% Java applications quickly and provide reliability and cross-platform consistency.
Thursday, April 3, 2008
about java
Native code is code that after you compile it, the compiled code runs on a specific hardware platform. As a platform-independent environment, the Java platform can be a bit slower than native code. However, smart compilers, well-tuned interpreters, and just-in-time bytecode compilers can bring performance close to that of native code without threatening portability
Java was conceived by James Gosling, Patrick Naughton, Chris Warth, EdFrank and Mike Sheridan at SUN Micro systems Incorporation in 1991. It took 18 months to develop the first working version. This language was initially called "OAK", but was renamed "JAVA" in 1995. Before the initial implementation of Oak in 1992 and the public announcement of Java in 1995, many more contributed to the design and evolution of the language.
Java is developed in year 1990 by “Sun micro system” to develop special soft wear that is used to manipulate censurer electronic drivers. In year 1992 “Green project team” win micro system, demonstrated the application of their new language to control list of home application (or) appliances to handle device with any they touch screen. In year 1993 www(world wide web) appeared on the internet and transformed the text – based internet in to graphical –rich environment. The green project team come up with the idea of developing web applets, using the new language. In year 1994 the “green project team” developed a web browser called “Hot Java” demonstrated the power of the new language. In year 1996, java established it self-not only as a leader for Internet programming, but also as general purpose, object – oriented programming language.
Friday, March 21, 2008
Software testing is a critical element of software quality assurance and represents the ultimate reviews of specification, design and coding. Testing represents interesting anomaly for the software. During earlier definition and development phases, it was attempted to build software from an abstract concept to tangible implementation. The testing phase involves the testing of the developed system using various test data. Preparation of the test data plays a vital role in the system testing. After preparing the test data the system under study was tested using those test data. While testing the system, errors were found and corrected by using the following testing steps and corrections are also noted for future use. Thus, a series of testing is performed for the proposed system, before the system was ready for the implementation.
Testing is the process of detecting errors.Testing performs a very critical role for quality assurance and for ensuring the reliability of software.The results of testing are used later on during maintainence also
The aim of testing is often to demonstrate that a program works by showing that it has no errors.The basic purpose of testing phase is to detect the errors that may be present in the program.Hence one should not start testing with the intent of showing that a program works,but the intent should be to show that a program
Doesn’t work.
.
Testing Objectives:
The main objective of testing is to uncover a host of errors, systematically and with minimum effort and time. Stating formally, we can say,
• Testing is a process of executing a program with the intent of finding an error.
• A successful test is one that uncovers an as yet undiscovered error.
• A good test case is one that has a high probability of finding error, if it exists.
• The tests are inadequate to detect possibly present errors.
• The software more or less confirms to the quality and reliable standards.
Wednesday, February 27, 2008
ABSTRACT :
Watermarking data for copyright protection is an accepted technique adopted for digital information. This subject has been quite exhaustively researched and several techniques have been established for protecting copyright for still images, audio and video files.
The main aim of this project is to propose a possible new technique for watermarking on images.
Digital Watermarking is a robust and efficient digital image water marking algorithm using the Fast Hadamard Transform is proposed for the copyright protection of digital images. This algorithm can embed or hide an entire image or pattern as a watermark such as a company’s logo or trademark into the original image. The performance of the proposed algorithm is evaluated using the Stirmark, which consists of 90 different types of image attacks. Results show that the proposed algorithm is very robust and can survive most of the stirmark attacks.
INTRODUCTION
PRESENT SYSTEM: -
Digital Watermark is an invisible mark inserted into the digital multimedia data so that it can be detected in the later stage of evidence of rightful ownership. A great deal of research efforts has been focused on digital watermark in recent years. The techniques proposed so far can be divided into two main groups of according to the embedding domain of the container image.
1) Spatial Domain Approach:
One group is SPATIAL domain approach .The earliest watermarking techniques are mainly this kind and the simplest example is to embed the watermark into least significant bits(LSB) of the image pixels. However, this technique has relatively low information hiding capacity and can be easily erased by lossy image compression.
2) Frequency Domain Approach:
The other group is FREQUENCY domain approach. This can embed more information bits and is relatively robust to attacks. They embedded a Guassian distributed sequence into the perceptually most significant frequency components of the container image. Another technique embedded an image watermark into selectively modified middle frequency of discrete cosine transform coefficients. One more algorithm embedded watermark using Fourier transformations that is invariant to image manipulations or attacks due to rotation scaling and translation. Still several methods used to hide the data to the frequency domain such as HVS, JND.
