Sunday, January 27, 2008

What Is a Socket in Java?

A socket is one end-point of a two-way communication link between the two programs running on the network respectively. Socket classes are used to correspond to the connection between a client program and a server program in java. The package has two classes--Socket and ServerSocket--that implement the client side of the communication link or connection and the server side of the connection, correspondingly.

Thursday, January 17, 2008

How do Lenses and frames made?

The Lenses are characteristically made from one of three materials. They comprise glass, plastic (usually acrylic), and polycarbonate. Glass lenses have the finest optical clearness and scratch resistance, but are heavier than plastic or the polycarbonate lenses. They can also shatter or break on impact. The Plastic lenses are lighter than glass lenses, but are more prone to scratching. They do on the other hand, offer more resistance to shattering than glass. The Polycarbonate lenses are even lighter than plastic lenses. They are shatter-resistant (but not indestructible) making them apt for impact protection.
The Frames are normally made from plastic, nylon, a metal or metal alloy. Nylon frames are generally used in sports for the reason that they are light weight and flexible. They are able to twist slightly rather than breaking when pressure is applied to them. This flex can also help out the glasses grip well on the wearer's face. Metal frames are generally more inflexible than nylon frames thus they can be more simply damaged when participating in sporty activities, but this is not to say that they cannot be used for such activities. For the reason that metal frames are more rigid, various models have spring loaded hinges to help them grip the wearer's face better. The end of the ear pieces and the bridge over the nose can be textured or have a rubber or plastic material to hold better. The ends of the ear pieces are generally bent so that they wrap around the ear; on the other hand, some models have straight ear pieces. Oakley, for instance, has straight ear pieces on all their glasses.

Monday, January 07, 2008

What is Spamdexing?

Spamdexing has numerous methods, such as repeating unrelated phrases, to control the relevancy or prominence of resources indexed by a search engine, in a manner inconsistent with the idea of the indexing system. Some consider it to be a part of search engine optimization; though there are numerous search engine optimization methods that get better the quality and appearance of the content of web sites and serve content useful to many users. Search engines use a variety of algorithms to conclude relevancy ranking. Some of these contain determining whether the search term appears in the META keywords tag, others whether the search term appears in the body text or URL of a web page. Many search engines test out for instances of spamdexing and will remove suspect pages from their indexes. In addition people working for a search-engine organization can quickly block the results-listing from entire websites that use spamdexing, perhaps alerted by user objects of false matches. The rise of spamdexing in the mid-1990s made the most important search engines of the time less useful.