In java, the main function is the point of entry of every java program. Its syntax always starts "public static void main" with (String args[]), in which it can also be modified by the name of the string array name.
It also known as an entry point is the key process. In any program, it is the first method, that executes whenever you run a program. There is one main feature in a regular app that uses instances of certain classes to operate.
Using this infrastructure we can implement asymmetric cryptography using a pair of public key and private key. It works on the mechanism that if one of the key is used for encryption the other key is used to decrypt the message.
