My first Java program

Why do we use string[] args within main function?

It is the starting of the java program.
The syntax is seems t be like this
public static void main (String[] args.

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I am also new to programming but I think it means that in our program we will use different "ARGUMENTS" (args).
[] brackets means different "arrays" of arguments.
String is a keyword {always use Capital "S" ), means in out program we will use data type.
so in whole it means we are going to use different arrays of data type arguments in our program.
please correct me if I am wrong