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Java Java Data Structures - Retired Organizing Data Splitting Strings

Posted by dlpuxdzztg
dlpuxdzztg
8,243 Points

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!

Shafeeq Ahmed
Shafeeq Ahmed
6,058 Points

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

Jeremy Hill
Jeremy Hill
29,567 Points
Jeremy Hill
Jeremy Hill
29,567 Points

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]);
         }
    }
}
Jeremy Hill
Jeremy Hill
29,567 Points

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