What is a Thread in Java?

A thread executes a series of instructions. Every line of code that is processed is done so by a thread. Few threads can run for the complete life of the applet, while others are alive for only a few milliseconds. A thread can also create a new thread or kills an existing one if when a new thread is created by the user. The Threads run in methods or constructors. The methods and constructors reside in the computer's memory themselves are lifeless in thread case. The threads go into the methods and continue to follow their instructions.

Multithreading in Java

Java provides built-in support for multithreaded programming. A multithreaded program will have 2 or more parts that can run concurrently. Each part of such a program in java is called a thread, and each thread defines a separate path of execution. It is a specialized form of multitasking. There are two distinct types of multitasking namely Process-based and Thread-based.

Useful information about Lens

A lens is a device for either the concentrating or diverging light, generally formed from a piece of shaped glass. The Analogous devices used with other types of electromagnetic radiation are as well called lenses: for example, a microwave lens can be made from paraffin wax.
The earliest proofs of lenses date to Ancient Greece, with Aristophanes' play The Clouds (424 BC) stating a burning-glass (a convex lens used to focus the sun's rays to create fire). The writings of Pliny the Elder (23-79) as well show that burning-glasses were identified to the Roman Empire, and mentions what is perhaps the first use of a corrective lens: Nero was identified to watch the gladiatorial games through a concave-shaped emerald (most probably to correct for myopia). Seneca the Younger (3 BC--65) explained the magnifying outcome of a glass globe filled with water. The Arabian mathematician Ibn Sahl (c.940-c.1000) used what is at present known as Snell's law to work out the shape of lenses, and Alhazen (Abu Ali al-Hasan Ibn Al-Haitham) (965-1038) wrote the first most important optical treatise which described how the lens in the human eye shaped an image on the retina. Widespread use of lenses did not occur until the invention of spectacles, possibly in Italy in the 1280s.

What is Internet marketing in SEO?

Internet marketing in SEO will make to get Money with Your Website - and help to Promote Your Website!
There are various types of internet marketing: they are Search Engine Optimization A.K.A Search Engine ranking, Banner Advertising, Promotion Software, E-mail Marketing, PPC click search engines, Affiliate Programs and Advertising Techniques.