Question

public class WC {

    private ArrayList<String> note;

    public WC() {
        note = new ArrayList<String>();
    }

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        WC w1 = new WC();
        w1.note.add(input.next());
    }

}

但它不会扫描多个单词

我该怎么办？

Answer 1

使用循环多次输入和存储

public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    WC w1 = new WC();

    // variable amount is number of times you want to enter data
    int amount = 5;
    for (int i = 1; i <= amount; i++) {
        w1.note.add(input.next());
    }
}

Answer 2

尝试这样的事情：

public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    WC w1 = new WC();

    String str;
    while (!(str = input.next()).equals("quit")) {
        w1.note.add(str);
    }
}

这样，您只需键入quit即可停止循环

如何在java中的ArrayList中扫描多个单词

2 个答案: