error: cannot find symbol

input:

import java.io.Console;

public class Introductions {

    public static void main(String[] args) {
        Console console = System.console();
        // Welcome to the Introductions program!  Your code goes below here
        String.firstName = "Andrew";
        // thisIsInCamelCasing
        console.printf("Hello, my name is %s\n", firstName);
        console.printf("%s is learning java\n", firstName);
  }
}

output:

location: class Introductions
Introductions.java:11: error: cannot find symbol
console.printf("%s is learning java\n", firstName);
^
symbol: variable firstName
location: class Introductions
3 errors

edit:

also when doing the coding challenge to input a firstname i get

Input:

String.firstName = "Andrew";

Output:

JavaTester.java:73: error: cannot find symbol String.firstName = "Andy"; ^ symbol: variable firstName location: class String Note: JavaTester.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. 1 error