What is Java and JavaScript?
Java is a language developed by Sun Microsystems which allows World Wide Web pages to contain code that is executed in the browser. Because Java is based on a single “virtual machine” that all implementations of Java emulate, it is possible for Java programs to run on any system, which has a version of Java. It is also possible for the “virtual machine” emulator to make sure that Java programs downloaded through the web do not attempt to do unauthorized things.