初学者：Java While循环不会退出吗？

Question

public static void main(String[] args) {
    StackX theStack = new StackX(99);

    String current = "Enterprise";
    int logOut = 1;
    String planetName;
    int secretCode;
    //This is the start out, do not loop this
    System.out.println("You are on the enterprise, where would you like to teleport?");

    //while loop will be done after reaching Io
    do {

        Scanner input = new Scanner(System.in);
        //Grab input from user
        System.out.println("Enter a planet name: ");
        planetName = input.nextLine();
        System.out.println("Enter a the four digit code for " + planetName + ": ");
        secretCode = input.nextInt();

        if (current.equals("Enterprise")){

            if (planetName.equalsIgnoreCase("Europa") && secretCode == 9007){
                current = planetName;
                Moon Europa = new Moon(planetName, secretCode);
                theStack.push(Europa);
            } else if (planetName.equalsIgnoreCase("Titan") && secretCode == 1232){
                current = planetName;
                Moon Titan = new Moon(planetName, secretCode);
                theStack.push(Titan);
            } else if (planetName.equalsIgnoreCase("Rhea") && secretCode == 5623){
                current = planetName;
                Moon Rhea = new Moon(planetName, secretCode);
                theStack.push(Rhea);
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else if (current.equals("Titan")){

            if (planetName.equalsIgnoreCase("Enterprise") && secretCode == 1212){
                current = planetName;
                Moon Enterprise = new Moon(planetName, secretCode);
                theStack.push(Enterprise);
            } else if (planetName.equalsIgnoreCase("Rhea") && secretCode == 5623){
                current = planetName;
                Moon Rhea = new Moon(planetName, secretCode);
                theStack.push(Rhea);
            } else if (planetName.equalsIgnoreCase("Elara") && secretCode == 1264){
                current = planetName;
                Moon Elara = new Moon(planetName, secretCode);
                theStack.push(Elara);
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else if (current.equals("Rhea")){

            if (planetName.equalsIgnoreCase("Enterprise") && secretCode == 1212){
                current = planetName;
                Moon Enterprise = new Moon(planetName, secretCode);
                theStack.push(Enterprise);
            } else if (planetName.equalsIgnoreCase("Titan") && secretCode == 1232){
                current = planetName;
                Moon Titan = new Moon(planetName, secretCode);
                theStack.push(Titan);
            } else if (planetName.equalsIgnoreCase("Europa") && secretCode == 9007){
                current = planetName;
                Moon Europa = new Moon(planetName, secretCode);
                theStack.push(Europa);
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else if (current.equals("Europa")){

            if (planetName.equalsIgnoreCase("Enterprise") && secretCode == 1212){
                current = planetName;
                Moon Enterprise = new Moon(planetName, secretCode);
                theStack.push(Enterprise);
            } else if (planetName.equalsIgnoreCase("Rhea") && secretCode == 5623){
                current = planetName;
                Moon Rhea = new Moon(planetName, secretCode);
                theStack.push(Rhea);
            } else if (planetName.equalsIgnoreCase("Metis") && secretCode == 2535){
                current = planetName;
                Moon Metis = new Moon(planetName, secretCode);
                theStack.push(Metis);
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else if (current.equals("Elara")){

            if (planetName.equalsIgnoreCase("Titan") && secretCode == 1232){
                current = planetName;
                Moon Titan = new Moon(planetName, secretCode);
                theStack.push(Titan);
            } else if (planetName.equalsIgnoreCase("Metis") && secretCode == 2535){
                current = planetName;
                Moon Metis = new Moon(planetName, secretCode);
                theStack.push(Metis);
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else if (current.equals("Metis")){

            if (planetName.equalsIgnoreCase("Europa") && secretCode == 9007){
                current = planetName;
                Moon Europa = new Moon(planetName, secretCode);
                theStack.push(Europa);
            } else if (planetName.equalsIgnoreCase("Elara") && secretCode == 1264){
                current = planetName;
                Moon Elara = new Moon(planetName, secretCode);
                theStack.push(Elara);
            } else if (planetName.equalsIgnoreCase("Io") && secretCode == 4792){
                current = planetName;
                Moon Io = new Moon(planetName, secretCode);
                theStack.push(Io);
                System.out.println("You have acquired the Macho Orb! Return to the Enterprise.");
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else if (current.equals("Io")){

            if (planetName.equalsIgnoreCase("Metis") && secretCode == 2535){
                current = planetName;
                Moon Metis = new Moon(planetName, secretCode);
                theStack.push(Metis);
            } else {
                logOut = 0;
                System.out.println("You are dead.");
            }

        } else {
            logOut = 0;
            System.out.println("You are dead.");

        }

    } while((!current.equals("Io")) || (logOut != 0));


}

The main thing that is wrong here is that the do-while loop will not exit. The premise of the program is to jump from planet to planet while the planetName is the destination and the current is the current planet you are on. What I want is the loop to exit when current is "Io". The destination becomes the current planet after each "jump" to another planet. I have tested it, and current does equal "Io" when it is supposed to at the

    if (planetName.equalsIgnoreCase("Io") && secretCode == 4792) {
        current = planetName;
        Moon Io = new Moon(planetName, secretCode);
        theStack.push(Io);
        System.out.println("You have acquired the Macho Orb! Return to the Enterprise.");
    }

However, the loop keeps going.

Answer 1

while((!current.equals("Io")) || (logOut != 0));

should be changed to

while((!current.equals("Io")) && (logOut != 0));