1. Introduction of Wget

2. Wget Wget is a package for retrieving files using HTTP and FTP, the most widely-used Internet protocols. Wget is non-interactive, meaning that it can work in the background, while the user is not logged on. This allows you to start a retrieval and disconnect from the system, letting Wget finish the work. By contrast, most of the Web browsers require constant user's presence, which can be a great hindrance when transferring a lot of data. Wget can follow links in html and xhtml pages and create local versions of remote web sites, fully recreating the directory structure of the original site. This is sometimes referred to as “recursive downloading.” While doing that, Wget respects the Robot Exclusion Standard (/robots.txt). Wget can be instructed to convert the links in downloaded html files to the local files for offline viewing.

3. This is how we can download the data from other site………

4. This is the page came after downloading from other site………..

5. Java Virtual Machine (JVM) It is the principal component of Java architecture that provides the cross platform functionality and security to Java. This is a software process that converts the compiled Java byte code to machine code. Byte code is an intermediary language between Java source and the host system.

6. Working of Java Virtual Machine (JVM)

7. Introduction to TIDY When editing HTML it's easy to make mistakes. Wouldn't it be nice if there was a simple way to fix these mistakes automatically and tidy up sloppy editing into nicely layed out markup Well now there is HTML TIDY is a free utility for doing just that. It also works great on the atrociously hard to read markup generated by specialized HTML editors and conversion tools, and can help you identify where you need to pay further attention on making your pages more accessible to people with disabilities. Missing or mismatched end tags are detected and corrected.

8. Examples 1.<h1>heading<h2>subheading</h3> is mapped to is mapped to<h1>heading</h1><h2>subheading</h2>----------------------------------------------------------------------------------------------- 2. End tags in the wrong order are corrected: here is a para bold bold italic bold? normal? here is a para bold bold italic bold? normal? is mapped to is mapped to here is a para bold bold italic bold? normal? here is a para bold bold italic bold? normal?

9. DOM Parser DOM is defined almost completely in terms of interfaces rather than classes. Different parsers provide their own custom implementations of these standard interfaces. This offers a great deal of flexibility. DOM is not complete to itself. Almost all significant DOM programs need to use some parser-specific classes. DOM programs are not too difficult to port from one parser to another, but a recompile is normally required. You can’t just change a system property to switch from one parser to another

10. Examples

11. MySql Database MySQL is a open source Relational Database Management System. MySQL is very fast reliable and flexible Database Management System. It provides a very high performance and it is multi threaded and multi user Relational Database management system. MySQL is one of the most popular relational database Management System on the web. The MySQL Database has become the world's most popular open source Database, because it is free and available on almost all the platforms. The MySQL can run on Unix, window, and Mac OS. MySQL is used for the internet applications as it provides good speed and is very secure. MySQL was developed to manage large volumes of data at very high speed to overcome the problems of existing solutions. MySQL can be used for verity of applications but it is mostly used for the web applications on the internet. MySQL is one of the most popular relational database Management System on the web. The MySQL Database has become the world's most popular open source Database, because it is free and available on almost all the platforms. The MySQL can run on Unix, window, and Mac OS. MySQL is used for the internet applications as it provides good speed and is very secure. MySQL was developed to manage large volumes of data at very high speed to overcome the problems of existing solutions. MySQL can be used for verity of applications but it is mostly used for the web applications on the internet.

12. We can view the data by applying Sql Queries as shown here….

13. We can take the Backup of Data on our Local Database as shown here…

14. We can also Restore the data from our Local Database to Live Database

15. Thank You Thank You