下面有一个程序，我正在调用gettotalpassenger（pm）方法，但是在获取用户输入的值时遇到了问题。

do {

            /*Menu being called from method and gives 6 options to the user. 
             Chosen option will be stored in "choice" variable.*/

    printmenu.menu();

    choice = sc.nextInt();

    //Creating a switch statement for the 6 menu options.

    switch (choice) {

    case 1 :  /* Asks user to input total number of passengers
              and a while loop to check if a positive number input is entered.
              If a negative input is entered the user is asked again to enter a positive entry.
              All inputs are stored in a variable.
              After a positive entry program continues to next question. */

             getTotalPassengers(pm);

方法代码为：

public static  int getTotolPassengers(int pm) {  

      while (pm <= 0) {
        System.out.println("Enter total number of  passengers from Malta :");
        pm = sc.nextInt();

        if (pm <= 0) {
          printpositive.positive ();
          continue;
        } 
     }

    return pm;
}

我尝试了不同的方法，比如把它初始化为int choice=0，
pm=0，cm=0，pi=0，ci=0，ps=0，cs=0，或者当我尝试这样做pm=gettotalpassengers（pm=0）时，它可以工作，但用户没有显示主菜单printmenu.menu（）；从上面输入system.out.println（“输入马耳他旅客总数：”）；先从方法，然后从菜单。我希望能够在main方法的pm变量中使用变量pmfrom方法的值。谢谢