如何将字符串数组调用到方法中

Question

我定义了 3 个方法，其中有 String[] 作为参数。我想从另一个函数设置这些，使用一些字符串，并打印每个字符串。

当我尝试从另一个函数（start() 函数）调用这些方法时，设置 String[] 参数的值 Eclipse 说：

类型不匹配：无法从 String 转换为 String[]

public class logistics2 {

private static String plane;

private static String truck;

private static String airport[];

private static String loc[];

private static String city[];

private static String pack[];

public static void at_obj_place(String object, String[] place) {

    object = truck;

    object = plane;

    place = loc;

    place = city;

    place = airport;

    return;

}

public static void in_pk_vehicle(String[] Pack, String vehicle) {

    Pack = pack;

    vehicle = truck;

    vehicle = plane;

    return;

}

public static void in_city(String[] place, String[] City ) {

    place = loc;

    City = city;

    return;

}

public static void start() {

    // HERE I RECEIVE THE ERROR MESSAGE

    in_city(airport = "cdg", city = "paris");

    in_city(airport = "lhr", city = "london");

    in_city(loc = "north", city = "paris");

    in_city(loc = "south",city = "paris");

    at_obj_place(plane = "plane", airport = "lhr");

    at_obj_place(truck = "truck", airport =  "cdg");

    at_obj_place(pack1 = "p1", airport = "lhr");

    at_obj_place(pack2 = "p2", airport = "lhr");

    for(int i = 0; i < airport[].length(); ) {

        System.out.println(airport + " " + city);

    }

    return;

我想根据我在 String[] 中插入的值的计数来打印使用 for 条件设置的每个值

Answer 1

在所有方法中，您必须传递字符串，您必须传递字符串数组。对于所有数组都是这样：airport[0] = "cdg";airport[1] = "lhr";city[0] = "paris";city[1] = "london";然后将其传递给以下方法：in_city(airport,city);在 for 循环中，您必须仅提及数组名称，例如 airport而不是 airport[]并为 i 添加增量。