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Java Java Data Structures - Retired Organizing Data Splitting Strings

I need a refresher...

Hello,

Could someone explain 'String[]' for me? I'm nut entirely sure how it works and when to use it when writing a program.

Thanks!

It represent a String array. Array is like a variable that stores multiple values. You will create an array like this: datatype[] arrayName = {"valu1","value2",......}; Ex: String[] names= {"Victor","Sam","Jack","Albert"};

1 Answer

String[] is a String array. If you are thinking about the "public static void main(String[] args)" line this is the method main with a built in String array that will allow you to enter in arguments straight from the command line. Like this:

public class Example{

    public static void main(String[] args){

         System.out.println("Here are the arguments that you passed in:");
         for(int i = 0; i < args.length; i++){
             System.out.println(args[i]);
         }
    }
}

When you go to run this class from the command line and wanted to pass in your first and last name as the arguments you would do it like this:

java Example John Doe

...and the output would look like this if you ran the above program:

Here are the arguments that you passed in:

John

Doe