Java:从类创建一个新数组

Question

我有我的 Fila 类:

import java.util.Arrays;

public class Fila {

    private int [] fila;

    public Fila(int[] fila) {
        this.fila = fila;
    }

    public Fila() {

    }

    public int[] getFila() {
        return fila;
    }

    public void setFila(int[] fila) {
        this.fila = fila;
    }

    @Override
    public String toString() {
        return "Fila{" +
                "fila=" + Arrays.toString(fila) +
                '}';
    }
}

现在我想在我的 main 上创建一个新的 int 数组并插入用户输入的新值。我的主要自动提款机有以下代码:

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner teclado = new Scanner(System.in);
        System.out.println("Fila dimension? ");
        int n = teclado.nextInt();

        Fila [] a = new Fila [n];
        System.out.println("Dimension of Fila: "+a.length);
        System.out.println("Place that you want to add? ");
        int l = teclado.nextInt();

        for (int i = l-1; i <= l-1; i++) {
            System.out.println("Number? ");
            a [i] = teclado.nextInt();
        }
        System.out.println(Arrays.toString(a));

    }
}

但我这里有不兼容的类型:a [i] = teclado.nextInt();

我需要做什么？

Answer 1

在我看来，这就像你想要的:

public class Main {
    public static void main(String[] args) {
        Scanner teclado = new Scanner(System.in);
        System.out.println("Fila dimension? ");
        int n = teclado.nextInt();

        int [] a = new int [n];
        System.out.println("Dimension of Fila: "+a.length);
        System.out.println("Place that you want to add? ");
        int l = teclado.nextInt();

        for (int i = l-1; i <= l-1; i++) {
            System.out.println("Number? ");
            a [i] = teclado.nextInt();
        }
        System.out.println(Arrays.toString(a));

        Fila fila = new Fila(a);
        // Do something else with fila here...
    }
}

当您编写 Fila a = new Fila[n] 时，您实际上是在创建一个 Fila 对象数组，而不是一个整数数组。