java - 在java中使用for循环将名称添加到数组中

Question

我正在编写一段代码，要求用户输入玩家姓名并将其存储在数组中。为此，我使用了 for 循环，我认为这会更有效，但是，代码似乎做了一些意想不到的事情，而且我不明白为什么它会这样做。下面是代码和结果:

Scanner reader = new Scanner (System.in);
System.out.print("Please enter the number of players:");
int players = reader.nextInt();

String[] player_name = new String[players+1];//Array to store player names
for (int i = 0; i < players; i++)//Loop to ask players their name
{
    System.out.print("Player " + (i+1) + " please enter your name:\n");//Asks player names one by one
    player_name[i] = reader.nextLine();//Saves the player names to the array
}

这是玩家数量为 2 时的结果:

Please enter the number of players:2

Player 1 please enter your name:

Player 2 please enter your name:

wa

BUILD SUCCESSFUL (total time: 23 seconds)

当我在输入“name”wa后按回车键输入玩家2的名字时，程序就结束了。

Answer 1

nextInt() 不会获取行尾字符，即输入数字后的“输入”。相反，您可以使用 nextLine() 并获取整行，然后将其解析为整数，如下所示

int players = Integer.parseInt(reader.nextLine());