What is Java?
Java is a technology that allows software designed and written just once for an idealized “virtual machine” to run on a variety of real computers, including Windows PCs, Macintoshes, and Unix computers.
On the web, Java is quite popular on web servers, used “under the hood” by many of the largest interactive websites. Here it serves the same role that PHP, ASP or Perl might, although traditionally Java has been used for larger-scale projects.
Java is a network-oriented programming language invented by Sun Microsystems that is specifically designed for writing programs that can be safely downloaded to your computer through the Internet and immediately run without fear of viruses or other harm to our computer or files.
Using small Java programs (called “Applets”), Web pages can include functions such as animations, calculators, and other fancy tricks. We can expect to see a huge variety of features added to the Web using Java, since you can write a Java program to do almost anything a regular computer program can do, and then include that Java program in a Web page.