COMPUTER FUNDAMENTALS

Detailed explanation-1: -Every subroutine in Java must be defined inside some class. This makes Java rather unusual among programming languages, since most languages allow free-floating, independent subroutines. One purpose of a class is to group together related subroutines and variables.

Detailed explanation-2: -A subroutine that is in a class or object is often called a method, and “method” is the term that most people prefer for subroutines in Java.

Detailed explanation-3: -Subroutine’s name is simply a name for identification purpose and you cannot use it in any statement except the CALL statement. A subroutine receives its input values from its formal arguments, does computations, and saves the results in some of its formal arguments.

Detailed explanation-4: -The program and the subroutine are stored together in the same file. The program and the subroutine shown here are written in pseudocode (a method of representing computer code in a general way):