Java Portability

Portability

Portability is a major aspect of the Internet because there are many different types of computers and operating systems connected to it. If a Java program were to be run on virtually any computer connected to the Internet, there needed to be some way to enable that program to execute on different systems. 

For example, in the case of an applet, the same applet must be able to be downloaded and executed by the wide variety of different CPUs, operating systems, and browsers connected to the Internet. It is not practical to have different versions of the applet for different computers. The Same code must work in All computers. 

Therefore, some means of generating portable executable code was needed. As you will soon see, the same mechanism that helps ensure security also helps create portability.