import java.util.*;
public class Retrieval {
	float[] numbers={3.8f, 1.2f, 22.0f, 19f, 0.01f, 19.24f, 5.28f};
	
	public void doTheThing() {
		Scanner input=new Scanner(System.in);
		int choice=-1;
		System.out.println("Which value do you want? (0..6)");
		System.out.println("(Negative to stop)");
		do {
			try {
				choice=input.nextInt();
				
				System.out.println(
					(choice>=0)?
					"Value at ["+choice+"]: "+numbers[choice]:
					"Byeee!"
				);
			}
			catch (ArrayIndexOutOfBoundsException e) {
				System.out.println("Invalid input: please stay within 0..6");
			}
			catch (InputMismatchException ime) {
				System.out.println("We encountered an issue we could not resolve.");
				System.out.println("Please try to be less irritating in the future.");
			}
		} while (choice>=0);
		
		
		input.close();
	}
	
	
	public static void main(String[] args){new Retrieval().doTheThing();}
}