Portable: The Portability is the quality of a program which makes it probable to run it on different kinds of computers. The programs written in low level languages are usually not very portable since they are generally closely tied to a particular instruction set or characteristics of a particular kind of Central Processing Unit. The Programs written in high level languages tend to be extra portable, however might still make non-portable supposition regarding a computer's underlying file system, for example. Java programs are extremely portable since a lot of machine- and file-system particular details are hidden from the programmer.