So I type:
import java.util.Scanner;
class Scanner {
    public static void main(String args[]) {
        Scanner bucky = new Scanner(System.in);
        System.out.println(bucky.nextLine());
    }
}

and it shows error message:

Exception in thread "main" java.lang.Error: Unresolved compilation problems:
    The constructor Scanner(InputStream) is undefined
    The method nextLine() is undefined for the type Scanner

    at Scanner.main(Scanner.java:4)

What do I do to fix it? I have a keyboard, mouse, and a microphone if you need to know.