java - 字符串数组错误

Question

我遇到一个数组错误，说它超出范围，我不知道出了什么问题。这是我的代码:

import java.util.*;
public class gameVar {
    public static int size;
    public static int counter;
    public static Scanner input = new Scanner(System.in);
    public static String currentIn;
    public static String nameArray[] = new String[size];
}

和第二类(我在第 6 行收到错误):

public class mainThread extends gameVar {
public static void main(String[] args){
    System.out.println("Please type the desired amount of players: ");
    size = input.nextInt();
    for(int counter = 0; counter < size; counter++){
        System.out.println("Please enter the name of player " + nameArray[counter])
        }
    }
}

非常感谢您的帮助!

Answer 1

以下分配零元素数组:

public static int size;
public static String nameArray[] = new String[size]; // <<<< Here, `size` is zero

您需要将数组初始化移至main():

public static void main(String[] args){
    System.out.println("Please type the desired amount of players: ");
    size = input.nextInt();
    nameArray = new String[size]; // <<< THIS
    for(int counter = 0; counter < size; counter++){
        System.out.println("Please enter the name of player " + nameArray[counter])
        }
    }
}

然后，您可以从 nameArray 的声明中删除 = new String[size]。