Java Arrays - 如何使用静态方法创建数组

I am searching for the lines of code to create a new array using a method called insertRow(int[] row). With this method, users can insert 5 numbers to form an array. Then this array should be named row2. Please help.

我正在搜索使用名为insertRow(int [] row)的方法创建新数组的代码行。使用此方法,用户可以插入5个数字以形成数组。然后这个数组应该命名为row2。请帮忙。

public class App 
{

    public static void main(String[] args) 
    {
        int[] row = new int[5];
        int[] row1 = {2,7,1,9,4};
        //int[] row2 = insertRow(row); this is wrong
    }

    public static void insertRow(int[] row)
    {
        for (int i = 0; i < row.length; i++)
        {
            int number;
            do
                number = Integer.parseInt(JOptionPane.showInputDialog("Insert the " + (i+1) + "th positif number"));
            while (getal < 0);

            row[i] = number;
        }
    }
}

1 个解决方案

#1

You were on the right track: change the signature of your method to return int[], allocate the row inside, and put your code in place of ... below:

你是在正确的轨道上:改变方法的签名以返回int [],在里面分配行,并将代码放在......下面的位置:

public static int[] insertRow() {
    int[] row = new int[5];
    ...
    return row;
}

Now this will work:

现在这将工作:

int[] row2 = insertRow(); // this is no longer wrong :)

#1