why does my console output negative increments only?

Question

import java.util.Scanner;

public class Elevator {

static int currentFloor = 1;

public static void main(String[] args) {
    System.out.println("Welcome to my Java elevator");


    while(currentFloor >=1 && currentFloor <= 3) {
        Scanner input = new Scanner(System.in);
        System.out.print("Would you like to go 'up' or 'down': ");
        String direction = input.nextLine().trim().toLowerCase();
        input.close();
        if (direction == "up") {
            goUp();
            displayCurrentFloor();
        }
        if (direction == "down") {
            goDown();
            displayCurrentFloor();
        } else {
            System.out.print("Error.. instructions unclear.");
            }

    }


}
public static void displayCurrentFloor() {
    System.out.println("moving.. current floor: "+ currentFloor);

}
public static void goUp() {
    ++currentFloor;
}
public static void goDown() {
    --currentFloor;
}

}

// All of my entries be it "up" or "down" or anything else, returns with my currentFloor decreasing by 1. Need help fixing this.