println被打印两次-Java

嗨,即时通讯我正在用Java为Uni做游戏,但即时通讯还是很新的

import java.util.Scanner;
public class Assignment{ 
public static void main ( String[] args ) {




    Assignment game;
    game = new Assignment();

    game.darkJungle();
    game.oldBridge();
    game.abandonedShack();
}
public void darkJungle() {

Scanner scanner = new Scanner(System.in);   

    System.out.println("Hello adventurer. You awake from your slumber 
in a dark jungle, with no memory of your past life.");
    System.out.println(""); 


    System.out.println("Before you set off exploring for answers, what 
do you wish to call yourself?");
    String playerName = scanner.next();

    System.out.println("hello " + playerName); 
    System.out.println();
    System.out.println("Inventory");
    System.out.println("-------------");
    String weapon;
    weapon = "glock";
    boolean rustyKey = true;


    System.out.println(weapon);
    System.out.println("rustyKey");
    System.out.println();
    System.out.println("You look to the east and west and notice 
they're the safest looking paths. Which path do you set off on?"); 
    System.out.println("1: west");
    System.out.println("2: east");

    int choice;
    choice = scanner.nextInt();


    if(choice==1){
        System.out.println("You have wandered onto a creaky old 
bridge.");
        scanner.nextLine();
        oldBridge();}

    if(choice==2) 
        {System.out.println("You find an abandoned shack.");
        scanner.nextLine();
        abandonedShack();}  


}
public void oldBridge() {
System.out.println(""); 
System.out.println("hi");   

}
public void abandonedShack() {}}

当我运行代码时,它工作正常,直到到达IF语句为止,在该语句中我可以选择输入“ 1”或“ 2”,并且结果两次显示下一个println?我对Java还是陌生的,因此将不胜感激。

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