Goto Alternatives in Java?

Question

I used to program in TI-BASIC, and often used goto statements. I have moved to learning java, and can't figure out how to send the execution of a program to another line.
This is my full code:

package inputs;

import java.util.Scanner;

public class Inputs {

/**
 * @param args the command line arguments
 */
public static void main(String[] args) {
        String greeting = "Welcome to a new choose your own adventure game!";
        String help = "Use commands such as up, down, left, and right to move around the world";
        String error = "You can't do that";
    room1();
}
public static String getNextLine() {
    Scanner scan = new Scanner(System.in);
    return scan.nextLine();
}
public static String getNextWord() {
    Scanner scan = new Scanner(System.in);
    String base = scan.nextLine();
    String command = base;
            //differentiate capital and lowcase
    if ("north".equals(base)){
        command = "North";
    }
    if ("south".equals(base)){
        command = "South";
    }
    if ("east".equals(base)){
        command = "East";
    }
    if ("west".equals(base)){
        command = "West";
    }
    return command;
}
public static void room1(){
    System.out.println("There is a faint smell of rotting flesh around you. you look hazily around the room. There is a door to the north. It may be your way out...");
    String command = getNextWord();
    while(1==1){
        if ("North".equals(command)){
            hall();
        }
        else{
            System.out.println("You can't do that.");
        }
    }
}
public static void hall(){
    System.out.println("You are in a hallway. The hallway continues in a northerly direction to another room. There is a room to your left");
    while(1==1){
    String command = getNextWord();
        if ("North".equals(command)){
            room3();
        }
        if ("East".equals(command)){
            room2();
        }
        if ("South".equals(command)) {
            room1();
        }
        else {
            System.out.println("You can't do that.");
        }
    }
}
public static void room2(){
    while(1==1){
    String command = getNextWord();
        if("get".equals(command)){
            System.out.println("You picked up the key. Maby there is a door somewhere");

        }
    }
}
public static void room3(){}

}

As you can see, I am attempting to create a text adventure game that has 4 rooms. If it's possible, I would also like to find a key in room2 that gets used in room3. Honestly, I have no ideea how to get this fixed...

*EDIT In response to being marked as a possible duplicate, my question asks for a specific method of action in regards to my particular program, rather than an over all method of action

Answer 1

Java does not have a goto statement, and you don't need one.

Currently, you're representing rooms as methods. The current room as the topmost layer on the call stack. Every room visited beforehand is below that. This approach is sufficient for short adventure-style games. However:

• You're learning Java, and Java supports object-oriented programming.
• If someone played your game a really long time, eventually the call stack would grow so large a stack overflow occurred.

An alternative would be to consider what are the objects in your game. You have:

• Rooms
• Inventory
• Inventory items (like the key)

These objects can be defined as Java classes or enums. The rooms and connections between rooms constitute the nodes and edges in a graph.

Your methods can be actions, such as transitioning the user from one room to another, or picking up or using an inventory item.